./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:59:58,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:59:58,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:59:58,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:59:58,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:59:58,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:59:58,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:59:58,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:59:58,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:59:58,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:59:58,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:59:58,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:59:58,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:59:58,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:59:58,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:59:58,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:59:58,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:59:58,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:59:58,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:59:58,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:59:59,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:59:59,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:59:59,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:59:59,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:59:59,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:59:59,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:59:59,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:59:59,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:59:59,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:59:59,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:59:59,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:59:59,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:59:59,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:59:59,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:59:59,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:59:59,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:59:59,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:59:59,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:59:59,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:59:59,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:59:59,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:59:59,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:59:59,062 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:59:59,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:59:59,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:59:59,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:59:59,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:59:59,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:59:59,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:59:59,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:59:59,066 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:59:59,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:59:59,067 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:59:59,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:59:59,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:59:59,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:59:59,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:59:59,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:59:59,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:59:59,069 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:59:59,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:59:59,070 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:59:59,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:59:59,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:59:59,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:59:59,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:59:59,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:59:59,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:59:59,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:59:59,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:59:59,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:59:59,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:59:59,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:59:59,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:59:59,078 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:59:59,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:59:59,079 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:59:59,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:59:59,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:59:59,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:59:59,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:59:59,379 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:59:59,379 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:59:59,381 INFO L432 ainManager$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 [2023-08-30 17:00:00,532 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:00:00,868 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:00:00,868 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-30 17:00:00,894 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf68d271/eefc98a181b54a51b275f5b12fab2d1c/FLAG6bf670dbb [2023-08-30 17:00:00,909 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf68d271/eefc98a181b54a51b275f5b12fab2d1c [2023-08-30 17:00:00,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:00:00,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:00:00,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:00:00,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:00:00,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:00:00,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:00:00" (1/1) ... [2023-08-30 17:00:00,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1172c1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:00, skipping insertion in model container [2023-08-30 17:00:00,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:00:00" (1/1) ... [2023-08-30 17:00:00,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:00:00,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:00:01,506 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] [2023-08-30 17:00:01,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:00:01,547 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:00:01,583 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] [2023-08-30 17:00:01,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:00:01,745 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:00:01,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01 WrapperNode [2023-08-30 17:00:01,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:00:01,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:00:01,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:00:01,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:00:01,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,820 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-08-30 17:00:01,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:00:01,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:00:01,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:00:01,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:00:01,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,857 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:00:01,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:00:01,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:00:01,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:00:01,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (1/1) ... [2023-08-30 17:00:01,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:00:01,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:00:01,891 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) [2023-08-30 17:00:01,920 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 [2023-08-30 17:00:01,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:00:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 17:00:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:00:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:00:01,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:00:01,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:00:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:00:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 17:00:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 17:00:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:00:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 17:00:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 17:00:01,937 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:00:02,248 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:00:02,250 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:00:02,451 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:00:02,457 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:00:02,457 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 17:00:02,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:02 BoogieIcfgContainer [2023-08-30 17:00:02,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:00:02,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:00:02,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:00:02,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:00:02,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:00:00" (1/3) ... [2023-08-30 17:00:02,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55980ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:00:02, skipping insertion in model container [2023-08-30 17:00:02,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:00:01" (2/3) ... [2023-08-30 17:00:02,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55980ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:00:02, skipping insertion in model container [2023-08-30 17:00:02,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:00:02" (3/3) ... [2023-08-30 17:00:02,466 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-08-30 17:00:02,472 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:00:02,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:00:02,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 17:00:02,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:00:02,541 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:00:02,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 174 transitions, 364 flow [2023-08-30 17:00:02,662 INFO L130 PetriNetUnfolder]: 10/212 cut-off events. [2023-08-30 17:00:02,662 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:00:02,667 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. [2023-08-30 17:00:02,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 174 transitions, 364 flow [2023-08-30 17:00:02,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 162 transitions, 336 flow [2023-08-30 17:00:02,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:00:02,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 162 transitions, 336 flow [2023-08-30 17:00:02,712 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 162 transitions, 336 flow [2023-08-30 17:00:02,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 162 transitions, 336 flow [2023-08-30 17:00:02,758 INFO L130 PetriNetUnfolder]: 7/193 cut-off events. [2023-08-30 17:00:02,758 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:00:02,759 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. [2023-08-30 17:00:02,762 INFO L119 LiptonReduction]: Number of co-enabled transitions 2392 [2023-08-30 17:00:12,775 INFO L134 LiptonReduction]: Checked pairs total: 5218 [2023-08-30 17:00:12,776 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 17:00:12,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:00:12,790 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;@46b36f75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:00:12,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 17:00:12,792 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 17:00:12,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:00:12,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:12,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 17:00:12,793 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)] === [2023-08-30 17:00:12,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:12,797 INFO L85 PathProgramCache]: Analyzing trace with hash 603, now seen corresponding path program 1 times [2023-08-30 17:00:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847539357] [2023-08-30 17:00:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:12,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:13,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847539357] [2023-08-30 17:00:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847539357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:13,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 17:00:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275055218] [2023-08-30 17:00:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:13,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:00:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:00:13,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:00:13,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 346 [2023-08-30 17:00:13,049 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) [2023-08-30 17:00:13,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:13,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 346 [2023-08-30 17:00:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:13,167 INFO L130 PetriNetUnfolder]: 217/419 cut-off events. [2023-08-30 17:00:13,167 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 17:00:13,169 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. [2023-08-30 17:00:13,172 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 17:00:13,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-08-30 17:00:13,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:00:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:00:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 344 transitions. [2023-08-30 17:00:13,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710982658959535 [2023-08-30 17:00:13,192 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 344 transitions. [2023-08-30 17:00:13,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 344 transitions. [2023-08-30 17:00:13,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:13,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 344 transitions. [2023-08-30 17:00:13,199 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) [2023-08-30 17:00:13,202 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) [2023-08-30 17:00:13,203 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) [2023-08-30 17:00:13,204 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 344 transitions. [2023-08-30 17:00:13,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-08-30 17:00:13,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:00:13,209 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-08-30 17:00:13,211 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} [2023-08-30 17:00:13,216 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-30 17:00:13,216 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-08-30 17:00:13,217 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) [2023-08-30 17:00:13,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:13,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 17:00:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 17:00:13,218 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)] === [2023-08-30 17:00:13,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 18565803, now seen corresponding path program 1 times [2023-08-30 17:00:13,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642735832] [2023-08-30 17:00:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:13,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642735832] [2023-08-30 17:00:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642735832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:13,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:13,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074589479] [2023-08-30 17:00:13,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:13,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2023-08-30 17:00:13,797 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) [2023-08-30 17:00:13,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:13,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2023-08-30 17:00:13,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:13,945 INFO L130 PetriNetUnfolder]: 344/668 cut-off events. [2023-08-30 17:00:13,945 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:00:13,947 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. [2023-08-30 17:00:13,950 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-08-30 17:00:13,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-08-30 17:00:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:13,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-30 17:00:13,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45183044315992293 [2023-08-30 17:00:13,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-30 17:00:13,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-30 17:00:13,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:13,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-30 17:00:13,956 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) [2023-08-30 17:00:13,960 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) [2023-08-30 17:00:13,961 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) [2023-08-30 17:00:13,961 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 469 transitions. [2023-08-30 17:00:13,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-08-30 17:00:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:00:13,962 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-08-30 17:00:13,962 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} [2023-08-30 17:00:13,963 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-08-30 17:00:13,963 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-08-30 17:00:13,963 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) [2023-08-30 17:00:13,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:13,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 17:00:13,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 17:00:13,964 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)] === [2023-08-30 17:00:13,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash 575539229, now seen corresponding path program 1 times [2023-08-30 17:00:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662776739] [2023-08-30 17:00:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662776739] [2023-08-30 17:00:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662776739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:00:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456139777] [2023-08-30 17:00:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:14,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2023-08-30 17:00:14,241 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) [2023-08-30 17:00:14,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2023-08-30 17:00:14,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:14,414 INFO L130 PetriNetUnfolder]: 483/887 cut-off events. [2023-08-30 17:00:14,414 INFO L131 PetriNetUnfolder]: For 388/396 co-relation queries the response was YES. [2023-08-30 17:00:14,416 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. [2023-08-30 17:00:14,419 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-08-30 17:00:14,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-08-30 17:00:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-30 17:00:14,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527938342967245 [2023-08-30 17:00:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-30 17:00:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-30 17:00:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:14,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-30 17:00:14,423 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) [2023-08-30 17:00:14,425 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) [2023-08-30 17:00:14,426 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) [2023-08-30 17:00:14,426 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 470 transitions. [2023-08-30 17:00:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-08-30 17:00:14,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:14,432 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-08-30 17:00:14,432 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} [2023-08-30 17:00:14,433 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-30 17:00:14,436 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-08-30 17:00:14,436 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) [2023-08-30 17:00:14,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:14,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:00:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 17:00:14,437 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)] === [2023-08-30 17:00:14,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash 857877734, now seen corresponding path program 1 times [2023-08-30 17:00:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:14,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754678946] [2023-08-30 17:00:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:14,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:14,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754678946] [2023-08-30 17:00:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754678946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:14,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:14,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617768342] [2023-08-30 17:00:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:14,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 346 [2023-08-30 17:00:14,553 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) [2023-08-30 17:00:14,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:14,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 346 [2023-08-30 17:00:14,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:14,630 INFO L130 PetriNetUnfolder]: 105/210 cut-off events. [2023-08-30 17:00:14,631 INFO L131 PetriNetUnfolder]: For 167/193 co-relation queries the response was YES. [2023-08-30 17:00:14,634 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. [2023-08-30 17:00:14,635 INFO L137 encePairwiseOnDemand]: 344/346 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 17:00:14,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-08-30 17:00:14,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 17:00:14,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-08-30 17:00:14,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 17:00:14,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 17:00:14,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:14,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 17:00:14,642 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) [2023-08-30 17:00:14,644 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) [2023-08-30 17:00:14,644 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) [2023-08-30 17:00:14,645 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 486 transitions. [2023-08-30 17:00:14,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-08-30 17:00:14,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 17:00:14,647 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-08-30 17:00:14,647 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} [2023-08-30 17:00:14,648 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-08-30 17:00:14,648 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-08-30 17:00:14,649 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) [2023-08-30 17:00:14,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:14,649 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] [2023-08-30 17:00:14,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 17:00:14,649 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)] === [2023-08-30 17:00:14,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1911713549, now seen corresponding path program 1 times [2023-08-30 17:00:14,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:14,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654951976] [2023-08-30 17:00:14,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:15,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:15,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654951976] [2023-08-30 17:00:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654951976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:15,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738610064] [2023-08-30 17:00:15,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:15,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:15,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:15,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2023-08-30 17:00:15,153 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) [2023-08-30 17:00:15,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:15,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2023-08-30 17:00:15,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:15,234 INFO L130 PetriNetUnfolder]: 96/229 cut-off events. [2023-08-30 17:00:15,234 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 17:00:15,235 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. [2023-08-30 17:00:15,236 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-30 17:00:15,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 141 flow [2023-08-30 17:00:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-30 17:00:15,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4614643545279383 [2023-08-30 17:00:15,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-30 17:00:15,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-30 17:00:15,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:15,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-30 17:00:15,240 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) [2023-08-30 17:00:15,242 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) [2023-08-30 17:00:15,243 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) [2023-08-30 17:00:15,243 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 3 states and 479 transitions. [2023-08-30 17:00:15,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 141 flow [2023-08-30 17:00:15,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:00:15,245 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 76 flow [2023-08-30 17:00:15,245 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} [2023-08-30 17:00:15,247 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-08-30 17:00:15,247 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 76 flow [2023-08-30 17:00:15,247 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) [2023-08-30 17:00:15,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:15,247 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] [2023-08-30 17:00:15,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 17:00:15,248 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)] === [2023-08-30 17:00:15,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash -199307549, now seen corresponding path program 2 times [2023-08-30 17:00:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:15,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408772714] [2023-08-30 17:00:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:17,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:17,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408772714] [2023-08-30 17:00:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408772714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:17,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 17:00:17,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418037411] [2023-08-30 17:00:17,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:17,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 17:00:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 17:00:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-08-30 17:00:18,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 346 [2023-08-30 17:00:18,798 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) [2023-08-30 17:00:18,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:18,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 346 [2023-08-30 17:00:18,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:19,493 INFO L130 PetriNetUnfolder]: 232/456 cut-off events. [2023-08-30 17:00:19,494 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-30 17:00:19,495 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. [2023-08-30 17:00:19,496 INFO L137 encePairwiseOnDemand]: 332/346 looper letters, 65 selfloop transitions, 22 changer transitions 0/87 dead transitions. [2023-08-30 17:00:19,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 87 transitions, 436 flow [2023-08-30 17:00:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:00:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:00:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1610 transitions. [2023-08-30 17:00:19,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877649325626204 [2023-08-30 17:00:19,501 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1610 transitions. [2023-08-30 17:00:19,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1610 transitions. [2023-08-30 17:00:19,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:19,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1610 transitions. [2023-08-30 17:00:19,506 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) [2023-08-30 17:00:19,511 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) [2023-08-30 17:00:19,512 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) [2023-08-30 17:00:19,512 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 76 flow. Second operand 12 states and 1610 transitions. [2023-08-30 17:00:19,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 87 transitions, 436 flow [2023-08-30 17:00:19,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 87 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 17:00:19,515 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 248 flow [2023-08-30 17:00:19,515 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} [2023-08-30 17:00:19,517 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-08-30 17:00:19,517 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 248 flow [2023-08-30 17:00:19,524 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) [2023-08-30 17:00:19,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:19,524 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] [2023-08-30 17:00:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 17:00:19,524 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)] === [2023-08-30 17:00:19,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1961031447, now seen corresponding path program 1 times [2023-08-30 17:00:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531827637] [2023-08-30 17:00:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:20,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:20,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531827637] [2023-08-30 17:00:20,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531827637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:20,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:20,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:00:20,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836009335] [2023-08-30 17:00:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:20,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:00:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:20,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:00:20,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:00:20,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 346 [2023-08-30 17:00:20,456 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) [2023-08-30 17:00:20,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:20,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 346 [2023-08-30 17:00:20,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:20,679 INFO L130 PetriNetUnfolder]: 206/501 cut-off events. [2023-08-30 17:00:20,679 INFO L131 PetriNetUnfolder]: For 788/798 co-relation queries the response was YES. [2023-08-30 17:00:20,681 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. [2023-08-30 17:00:20,683 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 59 selfloop transitions, 24 changer transitions 1/90 dead transitions. [2023-08-30 17:00:20,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 629 flow [2023-08-30 17:00:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:00:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:00:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 867 transitions. [2023-08-30 17:00:20,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41763005780346824 [2023-08-30 17:00:20,686 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 867 transitions. [2023-08-30 17:00:20,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 867 transitions. [2023-08-30 17:00:20,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:20,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 867 transitions. [2023-08-30 17:00:20,689 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) [2023-08-30 17:00:20,691 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) [2023-08-30 17:00:20,692 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) [2023-08-30 17:00:20,692 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 248 flow. Second operand 6 states and 867 transitions. [2023-08-30 17:00:20,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 90 transitions, 629 flow [2023-08-30 17:00:20,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 90 transitions, 601 flow, removed 14 selfloop flow, removed 0 redundant places. [2023-08-30 17:00:20,697 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 358 flow [2023-08-30 17:00:20,698 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} [2023-08-30 17:00:20,698 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-08-30 17:00:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 358 flow [2023-08-30 17:00:20,699 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) [2023-08-30 17:00:20,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:20,699 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] [2023-08-30 17:00:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 17:00:20,700 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)] === [2023-08-30 17:00:20,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1843978645, now seen corresponding path program 3 times [2023-08-30 17:00:20,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:20,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444787227] [2023-08-30 17:00:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:20,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:22,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:22,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444787227] [2023-08-30 17:00:22,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444787227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:22,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:22,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:00:22,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204520767] [2023-08-30 17:00:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:22,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:00:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:00:22,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:00:22,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 346 [2023-08-30 17:00:22,935 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) [2023-08-30 17:00:22,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:22,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 346 [2023-08-30 17:00:22,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:23,447 INFO L130 PetriNetUnfolder]: 373/803 cut-off events. [2023-08-30 17:00:23,447 INFO L131 PetriNetUnfolder]: For 1743/1743 co-relation queries the response was YES. [2023-08-30 17:00:23,450 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. [2023-08-30 17:00:23,453 INFO L137 encePairwiseOnDemand]: 334/346 looper letters, 85 selfloop transitions, 25 changer transitions 0/110 dead transitions. [2023-08-30 17:00:23,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 906 flow [2023-08-30 17:00:23,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:00:23,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:00:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1486 transitions. [2023-08-30 17:00:23,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904361534419338 [2023-08-30 17:00:23,458 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1486 transitions. [2023-08-30 17:00:23,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1486 transitions. [2023-08-30 17:00:23,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:23,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1486 transitions. [2023-08-30 17:00:23,462 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) [2023-08-30 17:00:23,466 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) [2023-08-30 17:00:23,467 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) [2023-08-30 17:00:23,467 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 358 flow. Second operand 11 states and 1486 transitions. [2023-08-30 17:00:23,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 906 flow [2023-08-30 17:00:23,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 883 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 17:00:23,473 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 611 flow [2023-08-30 17:00:23,473 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} [2023-08-30 17:00:23,474 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-08-30 17:00:23,474 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 611 flow [2023-08-30 17:00:23,475 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) [2023-08-30 17:00:23,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:23,475 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] [2023-08-30 17:00:23,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 17:00:23,475 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)] === [2023-08-30 17:00:23,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:23,476 INFO L85 PathProgramCache]: Analyzing trace with hash -441641337, now seen corresponding path program 4 times [2023-08-30 17:00:23,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:23,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301259460] [2023-08-30 17:00:23,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:23,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:24,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:24,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301259460] [2023-08-30 17:00:24,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301259460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:24,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:24,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:24,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520764044] [2023-08-30 17:00:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:24,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:24,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:25,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:25,862 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) [2023-08-30 17:00:25,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:25,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:25,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:26,584 INFO L130 PetriNetUnfolder]: 428/943 cut-off events. [2023-08-30 17:00:26,585 INFO L131 PetriNetUnfolder]: For 2450/2450 co-relation queries the response was YES. [2023-08-30 17:00:26,588 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. [2023-08-30 17:00:26,593 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 105 selfloop transitions, 35 changer transitions 0/140 dead transitions. [2023-08-30 17:00:26,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 1284 flow [2023-08-30 17:00:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:00:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:00:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1618 transitions. [2023-08-30 17:00:26,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896917148362235 [2023-08-30 17:00:26,598 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1618 transitions. [2023-08-30 17:00:26,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1618 transitions. [2023-08-30 17:00:26,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:26,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1618 transitions. [2023-08-30 17:00:26,602 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) [2023-08-30 17:00:26,607 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) [2023-08-30 17:00:26,608 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) [2023-08-30 17:00:26,608 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 611 flow. Second operand 12 states and 1618 transitions. [2023-08-30 17:00:26,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 1284 flow [2023-08-30 17:00:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 140 transitions, 1252 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-30 17:00:26,623 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 893 flow [2023-08-30 17:00:26,623 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} [2023-08-30 17:00:26,624 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 53 predicate places. [2023-08-30 17:00:26,624 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 893 flow [2023-08-30 17:00:26,625 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) [2023-08-30 17:00:26,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:26,625 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] [2023-08-30 17:00:26,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 17:00:26,626 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)] === [2023-08-30 17:00:26,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1458287477, now seen corresponding path program 5 times [2023-08-30 17:00:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015563741] [2023-08-30 17:00:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:27,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:27,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015563741] [2023-08-30 17:00:27,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015563741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:27,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939906520] [2023-08-30 17:00:27,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:27,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:28,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:28,857 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) [2023-08-30 17:00:28,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:28,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:29,606 INFO L130 PetriNetUnfolder]: 477/1073 cut-off events. [2023-08-30 17:00:29,606 INFO L131 PetriNetUnfolder]: For 3909/3909 co-relation queries the response was YES. [2023-08-30 17:00:29,611 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. [2023-08-30 17:00:29,616 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 120 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2023-08-30 17:00:29,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 153 transitions, 1591 flow [2023-08-30 17:00:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:00:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:00:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1483 transitions. [2023-08-30 17:00:29,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896479243300053 [2023-08-30 17:00:29,621 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1483 transitions. [2023-08-30 17:00:29,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1483 transitions. [2023-08-30 17:00:29,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:29,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1483 transitions. [2023-08-30 17:00:29,625 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) [2023-08-30 17:00:29,629 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) [2023-08-30 17:00:29,630 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) [2023-08-30 17:00:29,630 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 893 flow. Second operand 11 states and 1483 transitions. [2023-08-30 17:00:29,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 153 transitions, 1591 flow [2023-08-30 17:00:29,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 153 transitions, 1518 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-08-30 17:00:29,658 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 1150 flow [2023-08-30 17:00:29,658 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} [2023-08-30 17:00:29,658 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-08-30 17:00:29,658 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 1150 flow [2023-08-30 17:00:29,659 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) [2023-08-30 17:00:29,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:29,659 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] [2023-08-30 17:00:29,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 17:00:29,660 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)] === [2023-08-30 17:00:29,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:29,660 INFO L85 PathProgramCache]: Analyzing trace with hash -228543521, now seen corresponding path program 2 times [2023-08-30 17:00:29,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:29,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001966106] [2023-08-30 17:00:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:29,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:30,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001966106] [2023-08-30 17:00:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001966106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:30,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:30,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:00:30,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061983086] [2023-08-30 17:00:30,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:30,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:00:30,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:30,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:00:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:00:30,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 346 [2023-08-30 17:00:30,460 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) [2023-08-30 17:00:30,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:30,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 346 [2023-08-30 17:00:30,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:30,774 INFO L130 PetriNetUnfolder]: 360/954 cut-off events. [2023-08-30 17:00:30,774 INFO L131 PetriNetUnfolder]: For 4553/4570 co-relation queries the response was YES. [2023-08-30 17:00:30,780 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. [2023-08-30 17:00:30,784 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 107 selfloop transitions, 35 changer transitions 21/171 dead transitions. [2023-08-30 17:00:30,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 171 transitions, 1940 flow [2023-08-30 17:00:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:00:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:00:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 877 transitions. [2023-08-30 17:00:30,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42244701348747593 [2023-08-30 17:00:30,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 877 transitions. [2023-08-30 17:00:30,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 877 transitions. [2023-08-30 17:00:30,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:30,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 877 transitions. [2023-08-30 17:00:30,790 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) [2023-08-30 17:00:30,793 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) [2023-08-30 17:00:30,794 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) [2023-08-30 17:00:30,794 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 1150 flow. Second operand 6 states and 877 transitions. [2023-08-30 17:00:30,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 171 transitions, 1940 flow [2023-08-30 17:00:30,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 171 transitions, 1876 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-30 17:00:30,815 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 1141 flow [2023-08-30 17:00:30,815 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} [2023-08-30 17:00:30,815 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2023-08-30 17:00:30,816 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 1141 flow [2023-08-30 17:00:30,816 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) [2023-08-30 17:00:30,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:30,816 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] [2023-08-30 17:00:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 17:00:30,817 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)] === [2023-08-30 17:00:30,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash 213092719, now seen corresponding path program 3 times [2023-08-30 17:00:30,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:30,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432878322] [2023-08-30 17:00:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:30,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:31,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432878322] [2023-08-30 17:00:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432878322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:31,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:31,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:00:31,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344729299] [2023-08-30 17:00:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:00:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:00:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:00:31,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 346 [2023-08-30 17:00:31,034 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) [2023-08-30 17:00:31,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:31,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 346 [2023-08-30 17:00:31,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:31,141 INFO L130 PetriNetUnfolder]: 125/400 cut-off events. [2023-08-30 17:00:31,141 INFO L131 PetriNetUnfolder]: For 2487/2499 co-relation queries the response was YES. [2023-08-30 17:00:31,143 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. [2023-08-30 17:00:31,145 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 61 selfloop transitions, 5 changer transitions 5/78 dead transitions. [2023-08-30 17:00:31,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 78 transitions, 946 flow [2023-08-30 17:00:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:00:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:00:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-08-30 17:00:31,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576107899807322 [2023-08-30 17:00:31,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-08-30 17:00:31,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-08-30 17:00:31,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:31,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-08-30 17:00:31,149 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) [2023-08-30 17:00:31,151 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) [2023-08-30 17:00:31,151 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) [2023-08-30 17:00:31,151 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 1141 flow. Second operand 3 states and 475 transitions. [2023-08-30 17:00:31,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 78 transitions, 946 flow [2023-08-30 17:00:31,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 770 flow, removed 67 selfloop flow, removed 17 redundant places. [2023-08-30 17:00:31,161 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 552 flow [2023-08-30 17:00:31,161 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} [2023-08-30 17:00:31,162 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2023-08-30 17:00:31,162 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 552 flow [2023-08-30 17:00:31,162 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) [2023-08-30 17:00:31,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:31,162 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] [2023-08-30 17:00:31,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 17:00:31,163 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)] === [2023-08-30 17:00:31,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 819257213, now seen corresponding path program 6 times [2023-08-30 17:00:31,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:31,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138906462] [2023-08-30 17:00:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:32,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138906462] [2023-08-30 17:00:32,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138906462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:32,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:32,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 17:00:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936920446] [2023-08-30 17:00:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 17:00:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 17:00:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-08-30 17:00:33,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 346 [2023-08-30 17:00:33,945 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) [2023-08-30 17:00:33,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:33,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 346 [2023-08-30 17:00:33,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:34,564 INFO L130 PetriNetUnfolder]: 183/509 cut-off events. [2023-08-30 17:00:34,564 INFO L131 PetriNetUnfolder]: For 1573/1573 co-relation queries the response was YES. [2023-08-30 17:00:34,566 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. [2023-08-30 17:00:34,568 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 65 selfloop transitions, 25 changer transitions 21/111 dead transitions. [2023-08-30 17:00:34,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 1057 flow [2023-08-30 17:00:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:00:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:00:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1471 transitions. [2023-08-30 17:00:34,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38649500788229113 [2023-08-30 17:00:34,573 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1471 transitions. [2023-08-30 17:00:34,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1471 transitions. [2023-08-30 17:00:34,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:34,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1471 transitions. [2023-08-30 17:00:34,576 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) [2023-08-30 17:00:34,580 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) [2023-08-30 17:00:34,581 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) [2023-08-30 17:00:34,581 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 552 flow. Second operand 11 states and 1471 transitions. [2023-08-30 17:00:34,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 1057 flow [2023-08-30 17:00:34,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 977 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-08-30 17:00:34,589 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 587 flow [2023-08-30 17:00:34,589 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} [2023-08-30 17:00:34,589 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-08-30 17:00:34,590 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 587 flow [2023-08-30 17:00:34,590 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) [2023-08-30 17:00:34,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:34,590 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] [2023-08-30 17:00:34,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 17:00:34,591 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)] === [2023-08-30 17:00:34,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2126053931, now seen corresponding path program 4 times [2023-08-30 17:00:34,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:34,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362210447] [2023-08-30 17:00:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362210447] [2023-08-30 17:00:35,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362210447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:35,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:35,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 17:00:35,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469049733] [2023-08-30 17:00:35,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 17:00:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 17:00:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-30 17:00:35,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 346 [2023-08-30 17:00:35,965 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) [2023-08-30 17:00:35,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:35,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 346 [2023-08-30 17:00:35,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:36,497 INFO L130 PetriNetUnfolder]: 136/431 cut-off events. [2023-08-30 17:00:36,497 INFO L131 PetriNetUnfolder]: For 1535/1545 co-relation queries the response was YES. [2023-08-30 17:00:36,499 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. [2023-08-30 17:00:36,501 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 64 selfloop transitions, 43 changer transitions 7/118 dead transitions. [2023-08-30 17:00:36,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 1140 flow [2023-08-30 17:00:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 17:00:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 17:00:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1809 transitions. [2023-08-30 17:00:36,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021787461093819 [2023-08-30 17:00:36,506 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1809 transitions. [2023-08-30 17:00:36,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1809 transitions. [2023-08-30 17:00:36,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:36,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1809 transitions. [2023-08-30 17:00:36,510 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) [2023-08-30 17:00:36,515 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) [2023-08-30 17:00:36,516 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) [2023-08-30 17:00:36,516 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 587 flow. Second operand 13 states and 1809 transitions. [2023-08-30 17:00:36,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 1140 flow [2023-08-30 17:00:36,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 118 transitions, 1039 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-30 17:00:36,528 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 737 flow [2023-08-30 17:00:36,528 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} [2023-08-30 17:00:36,530 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-08-30 17:00:36,530 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 737 flow [2023-08-30 17:00:36,531 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) [2023-08-30 17:00:36,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:36,531 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] [2023-08-30 17:00:36,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 17:00:36,531 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)] === [2023-08-30 17:00:36,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1322110087, now seen corresponding path program 7 times [2023-08-30 17:00:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450359176] [2023-08-30 17:00:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:37,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:37,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450359176] [2023-08-30 17:00:37,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450359176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:37,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:37,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:37,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145460649] [2023-08-30 17:00:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:37,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:38,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:38,635 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) [2023-08-30 17:00:38,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:38,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:38,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:39,269 INFO L130 PetriNetUnfolder]: 141/432 cut-off events. [2023-08-30 17:00:39,269 INFO L131 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2023-08-30 17:00:39,271 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. [2023-08-30 17:00:39,273 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 68 selfloop transitions, 24 changer transitions 19/111 dead transitions. [2023-08-30 17:00:39,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 111 transitions, 1158 flow [2023-08-30 17:00:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1350 transitions. [2023-08-30 17:00:39,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901734104046243 [2023-08-30 17:00:39,276 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1350 transitions. [2023-08-30 17:00:39,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1350 transitions. [2023-08-30 17:00:39,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:39,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1350 transitions. [2023-08-30 17:00:39,279 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) [2023-08-30 17:00:39,283 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) [2023-08-30 17:00:39,284 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) [2023-08-30 17:00:39,284 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 737 flow. Second operand 10 states and 1350 transitions. [2023-08-30 17:00:39,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 111 transitions, 1158 flow [2023-08-30 17:00:39,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 111 transitions, 1084 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-30 17:00:39,292 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 746 flow [2023-08-30 17:00:39,292 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} [2023-08-30 17:00:39,293 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2023-08-30 17:00:39,293 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 746 flow [2023-08-30 17:00:39,293 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) [2023-08-30 17:00:39,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:39,294 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] [2023-08-30 17:00:39,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 17:00:39,294 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)] === [2023-08-30 17:00:39,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:39,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1641856457, now seen corresponding path program 8 times [2023-08-30 17:00:39,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:39,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374078211] [2023-08-30 17:00:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:40,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374078211] [2023-08-30 17:00:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374078211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:40,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:00:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151042565] [2023-08-30 17:00:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:00:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:00:40,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:00:41,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:41,416 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) [2023-08-30 17:00:41,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:41,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:41,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:41,981 INFO L130 PetriNetUnfolder]: 123/384 cut-off events. [2023-08-30 17:00:41,982 INFO L131 PetriNetUnfolder]: For 1371/1371 co-relation queries the response was YES. [2023-08-30 17:00:41,983 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. [2023-08-30 17:00:41,985 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 61 selfloop transitions, 27 changer transitions 15/103 dead transitions. [2023-08-30 17:00:41,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 1083 flow [2023-08-30 17:00:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1346 transitions. [2023-08-30 17:00:41,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890173410404624 [2023-08-30 17:00:41,988 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1346 transitions. [2023-08-30 17:00:41,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1346 transitions. [2023-08-30 17:00:41,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:41,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1346 transitions. [2023-08-30 17:00:41,990 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) [2023-08-30 17:00:41,994 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) [2023-08-30 17:00:41,994 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) [2023-08-30 17:00:41,994 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 746 flow. Second operand 10 states and 1346 transitions. [2023-08-30 17:00:41,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 1083 flow [2023-08-30 17:00:42,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 103 transitions, 1041 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 17:00:42,003 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 736 flow [2023-08-30 17:00:42,003 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} [2023-08-30 17:00:42,003 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-08-30 17:00:42,004 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 736 flow [2023-08-30 17:00:42,004 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) [2023-08-30 17:00:42,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:42,004 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] [2023-08-30 17:00:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 17:00:42,005 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)] === [2023-08-30 17:00:42,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2055519601, now seen corresponding path program 9 times [2023-08-30 17:00:42,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401415904] [2023-08-30 17:00:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:43,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:43,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401415904] [2023-08-30 17:00:43,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401415904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:43,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:43,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196873159] [2023-08-30 17:00:43,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:43,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:43,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:43,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:43,906 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) [2023-08-30 17:00:43,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:43,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:43,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:44,393 INFO L130 PetriNetUnfolder]: 97/315 cut-off events. [2023-08-30 17:00:44,394 INFO L131 PetriNetUnfolder]: For 1367/1367 co-relation queries the response was YES. [2023-08-30 17:00:44,395 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. [2023-08-30 17:00:44,396 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 56 selfloop transitions, 7 changer transitions 27/90 dead transitions. [2023-08-30 17:00:44,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 1014 flow [2023-08-30 17:00:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1336 transitions. [2023-08-30 17:00:44,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861271676300578 [2023-08-30 17:00:44,403 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1336 transitions. [2023-08-30 17:00:44,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1336 transitions. [2023-08-30 17:00:44,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:44,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1336 transitions. [2023-08-30 17:00:44,409 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) [2023-08-30 17:00:44,411 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) [2023-08-30 17:00:44,412 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) [2023-08-30 17:00:44,412 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 736 flow. Second operand 10 states and 1336 transitions. [2023-08-30 17:00:44,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 1014 flow [2023-08-30 17:00:44,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 946 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-30 17:00:44,421 INFO L231 Difference]: Finished difference. Result has 98 places, 61 transitions, 577 flow [2023-08-30 17:00:44,421 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} [2023-08-30 17:00:44,421 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-08-30 17:00:44,421 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 61 transitions, 577 flow [2023-08-30 17:00:44,422 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) [2023-08-30 17:00:44,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:44,422 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] [2023-08-30 17:00:44,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 17:00:44,422 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)] === [2023-08-30 17:00:44,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:44,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1069313457, now seen corresponding path program 10 times [2023-08-30 17:00:44,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:44,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139385094] [2023-08-30 17:00:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:44,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139385094] [2023-08-30 17:00:45,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139385094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:45,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:45,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 17:00:45,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63619950] [2023-08-30 17:00:45,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:45,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 17:00:45,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 17:00:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-08-30 17:00:46,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 346 [2023-08-30 17:00:46,670 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) [2023-08-30 17:00:46,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:46,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 346 [2023-08-30 17:00:46,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:47,349 INFO L130 PetriNetUnfolder]: 84/275 cut-off events. [2023-08-30 17:00:47,349 INFO L131 PetriNetUnfolder]: For 1080/1080 co-relation queries the response was YES. [2023-08-30 17:00:47,350 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. [2023-08-30 17:00:47,351 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 61 selfloop transitions, 28 changer transitions 13/102 dead transitions. [2023-08-30 17:00:47,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1024 flow [2023-08-30 17:00:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 17:00:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 17:00:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2112 transitions. [2023-08-30 17:00:47,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815028901734104 [2023-08-30 17:00:47,357 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2112 transitions. [2023-08-30 17:00:47,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2112 transitions. [2023-08-30 17:00:47,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:47,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2112 transitions. [2023-08-30 17:00:47,361 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) [2023-08-30 17:00:47,366 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) [2023-08-30 17:00:47,367 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) [2023-08-30 17:00:47,367 INFO L175 Difference]: Start difference. First operand has 98 places, 61 transitions, 577 flow. Second operand 16 states and 2112 transitions. [2023-08-30 17:00:47,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1024 flow [2023-08-30 17:00:47,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 937 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-30 17:00:47,374 INFO L231 Difference]: Finished difference. Result has 103 places, 65 transitions, 622 flow [2023-08-30 17:00:47,374 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} [2023-08-30 17:00:47,374 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-08-30 17:00:47,375 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 65 transitions, 622 flow [2023-08-30 17:00:47,375 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) [2023-08-30 17:00:47,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:47,375 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] [2023-08-30 17:00:47,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 17:00:47,376 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)] === [2023-08-30 17:00:47,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -878370767, now seen corresponding path program 11 times [2023-08-30 17:00:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695167627] [2023-08-30 17:00:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:47,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:48,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695167627] [2023-08-30 17:00:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695167627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:48,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 17:00:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784686617] [2023-08-30 17:00:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:48,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 17:00:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:48,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 17:00:48,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-30 17:00:49,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:49,464 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) [2023-08-30 17:00:49,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:49,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:49,924 INFO L130 PetriNetUnfolder]: 75/254 cut-off events. [2023-08-30 17:00:49,924 INFO L131 PetriNetUnfolder]: For 987/987 co-relation queries the response was YES. [2023-08-30 17:00:49,925 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. [2023-08-30 17:00:49,926 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 40 selfloop transitions, 8 changer transitions 37/85 dead transitions. [2023-08-30 17:00:49,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 85 transitions, 881 flow [2023-08-30 17:00:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1339 transitions. [2023-08-30 17:00:49,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869942196531792 [2023-08-30 17:00:49,935 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1339 transitions. [2023-08-30 17:00:49,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1339 transitions. [2023-08-30 17:00:49,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:49,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1339 transitions. [2023-08-30 17:00:49,937 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) [2023-08-30 17:00:49,940 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) [2023-08-30 17:00:49,941 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) [2023-08-30 17:00:49,941 INFO L175 Difference]: Start difference. First operand has 103 places, 65 transitions, 622 flow. Second operand 10 states and 1339 transitions. [2023-08-30 17:00:49,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 85 transitions, 881 flow [2023-08-30 17:00:49,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 85 transitions, 794 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-08-30 17:00:49,947 INFO L231 Difference]: Finished difference. Result has 100 places, 45 transitions, 340 flow [2023-08-30 17:00:49,947 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} [2023-08-30 17:00:49,948 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-08-30 17:00:49,948 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 45 transitions, 340 flow [2023-08-30 17:00:49,948 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) [2023-08-30 17:00:49,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:49,949 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] [2023-08-30 17:00:49,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 17:00:49,949 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)] === [2023-08-30 17:00:49,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:49,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1157873789, now seen corresponding path program 12 times [2023-08-30 17:00:49,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19946844] [2023-08-30 17:00:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:49,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19946844] [2023-08-30 17:00:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19946844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760610293] [2023-08-30 17:00:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:51,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:51,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:51,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:51,749 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) [2023-08-30 17:00:51,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:51,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:51,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:52,090 INFO L130 PetriNetUnfolder]: 34/149 cut-off events. [2023-08-30 17:00:52,090 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2023-08-30 17:00:52,091 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. [2023-08-30 17:00:52,092 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 45 selfloop transitions, 6 changer transitions 12/63 dead transitions. [2023-08-30 17:00:52,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 63 transitions, 543 flow [2023-08-30 17:00:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1328 transitions. [2023-08-30 17:00:52,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838150289017341 [2023-08-30 17:00:52,098 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1328 transitions. [2023-08-30 17:00:52,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1328 transitions. [2023-08-30 17:00:52,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:52,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1328 transitions. [2023-08-30 17:00:52,100 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) [2023-08-30 17:00:52,104 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) [2023-08-30 17:00:52,104 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) [2023-08-30 17:00:52,105 INFO L175 Difference]: Start difference. First operand has 100 places, 45 transitions, 340 flow. Second operand 10 states and 1328 transitions. [2023-08-30 17:00:52,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 63 transitions, 543 flow [2023-08-30 17:00:52,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 459 flow, removed 14 selfloop flow, removed 23 redundant places. [2023-08-30 17:00:52,108 INFO L231 Difference]: Finished difference. Result has 80 places, 46 transitions, 294 flow [2023-08-30 17:00:52,108 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} [2023-08-30 17:00:52,109 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-08-30 17:00:52,109 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 46 transitions, 294 flow [2023-08-30 17:00:52,109 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) [2023-08-30 17:00:52,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:52,109 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] [2023-08-30 17:00:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 17:00:52,110 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)] === [2023-08-30 17:00:52,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1596370359, now seen corresponding path program 13 times [2023-08-30 17:00:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:52,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460070120] [2023-08-30 17:00:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:53,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460070120] [2023-08-30 17:00:53,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460070120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:53,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:00:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146539878] [2023-08-30 17:00:53,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:53,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:00:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:53,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:00:53,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:00:53,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:53,827 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) [2023-08-30 17:00:53,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:53,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:53,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:54,176 INFO L130 PetriNetUnfolder]: 37/154 cut-off events. [2023-08-30 17:00:54,177 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-08-30 17:00:54,178 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. [2023-08-30 17:00:54,180 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 47 selfloop transitions, 14 changer transitions 11/72 dead transitions. [2023-08-30 17:00:54,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 72 transitions, 539 flow [2023-08-30 17:00:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:00:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:00:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1468 transitions. [2023-08-30 17:00:54,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857067787703626 [2023-08-30 17:00:54,187 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1468 transitions. [2023-08-30 17:00:54,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1468 transitions. [2023-08-30 17:00:54,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:54,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1468 transitions. [2023-08-30 17:00:54,189 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) [2023-08-30 17:00:54,191 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) [2023-08-30 17:00:54,192 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) [2023-08-30 17:00:54,192 INFO L175 Difference]: Start difference. First operand has 80 places, 46 transitions, 294 flow. Second operand 11 states and 1468 transitions. [2023-08-30 17:00:54,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 72 transitions, 539 flow [2023-08-30 17:00:54,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 509 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-30 17:00:54,198 INFO L231 Difference]: Finished difference. Result has 79 places, 49 transitions, 320 flow [2023-08-30 17:00:54,198 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} [2023-08-30 17:00:54,199 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2023-08-30 17:00:54,199 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 49 transitions, 320 flow [2023-08-30 17:00:54,199 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) [2023-08-30 17:00:54,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:54,200 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] [2023-08-30 17:00:54,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 17:00:54,200 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)] === [2023-08-30 17:00:54,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash -351313865, now seen corresponding path program 14 times [2023-08-30 17:00:54,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:54,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801172531] [2023-08-30 17:00:54,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:54,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801172531] [2023-08-30 17:00:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801172531] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:00:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106362957] [2023-08-30 17:00:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:00:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:00:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:00:56,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 346 [2023-08-30 17:00:56,146 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) [2023-08-30 17:00:56,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:56,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 346 [2023-08-30 17:00:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:56,466 INFO L130 PetriNetUnfolder]: 30/131 cut-off events. [2023-08-30 17:00:56,467 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-08-30 17:00:56,467 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. [2023-08-30 17:00:56,468 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 31 selfloop transitions, 4 changer transitions 26/61 dead transitions. [2023-08-30 17:00:56,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 61 transitions, 468 flow [2023-08-30 17:00:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1340 transitions. [2023-08-30 17:00:56,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872832369942196 [2023-08-30 17:00:56,471 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1340 transitions. [2023-08-30 17:00:56,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1340 transitions. [2023-08-30 17:00:56,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:56,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1340 transitions. [2023-08-30 17:00:56,473 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) [2023-08-30 17:00:56,475 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) [2023-08-30 17:00:56,475 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) [2023-08-30 17:00:56,475 INFO L175 Difference]: Start difference. First operand has 79 places, 49 transitions, 320 flow. Second operand 10 states and 1340 transitions. [2023-08-30 17:00:56,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 61 transitions, 468 flow [2023-08-30 17:00:56,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 61 transitions, 440 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 17:00:56,479 INFO L231 Difference]: Finished difference. Result has 80 places, 34 transitions, 193 flow [2023-08-30 17:00:56,479 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} [2023-08-30 17:00:56,481 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2023-08-30 17:00:56,481 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 34 transitions, 193 flow [2023-08-30 17:00:56,481 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) [2023-08-30 17:00:56,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:56,481 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] [2023-08-30 17:00:56,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 17:00:56,482 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)] === [2023-08-30 17:00:56,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2078140927, now seen corresponding path program 15 times [2023-08-30 17:00:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:56,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136440178] [2023-08-30 17:00:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:57,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:57,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136440178] [2023-08-30 17:00:57,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136440178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:57,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:57,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:57,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028375595] [2023-08-30 17:00:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:57,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:57,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:57,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:00:58,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:00:58,226 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) [2023-08-30 17:00:58,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:00:58,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:00:58,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:00:58,545 INFO L130 PetriNetUnfolder]: 17/95 cut-off events. [2023-08-30 17:00:58,545 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-30 17:00:58,545 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. [2023-08-30 17:00:58,546 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 31 selfloop transitions, 10 changer transitions 11/52 dead transitions. [2023-08-30 17:00:58,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 52 transitions, 369 flow [2023-08-30 17:00:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:00:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:00:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1323 transitions. [2023-08-30 17:00:58,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823699421965318 [2023-08-30 17:00:58,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1323 transitions. [2023-08-30 17:00:58,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1323 transitions. [2023-08-30 17:00:58,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:00:58,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1323 transitions. [2023-08-30 17:00:58,551 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) [2023-08-30 17:00:58,553 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) [2023-08-30 17:00:58,554 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) [2023-08-30 17:00:58,554 INFO L175 Difference]: Start difference. First operand has 80 places, 34 transitions, 193 flow. Second operand 10 states and 1323 transitions. [2023-08-30 17:00:58,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 52 transitions, 369 flow [2023-08-30 17:00:58,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 308 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-30 17:00:58,556 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 187 flow [2023-08-30 17:00:58,556 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} [2023-08-30 17:00:58,557 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-30 17:00:58,557 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 187 flow [2023-08-30 17:00:58,557 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) [2023-08-30 17:00:58,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:00:58,557 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] [2023-08-30 17:00:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 17:00:58,558 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)] === [2023-08-30 17:00:58,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:00:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1520858341, now seen corresponding path program 16 times [2023-08-30 17:00:58,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:00:58,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780171071] [2023-08-30 17:00:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:00:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:00:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:00:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:00:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 17:00:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780171071] [2023-08-30 17:00:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780171071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:00:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:00:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 17:00:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121252249] [2023-08-30 17:00:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:00:59,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 17:00:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 17:00:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 17:00:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-30 17:01:00,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2023-08-30 17:01:00,257 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) [2023-08-30 17:01:00,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:01:00,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2023-08-30 17:01:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:01:00,547 INFO L130 PetriNetUnfolder]: 15/88 cut-off events. [2023-08-30 17:01:00,547 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2023-08-30 17:01:00,547 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. [2023-08-30 17:01:00,547 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 28 selfloop transitions, 4 changer transitions 16/48 dead transitions. [2023-08-30 17:01:00,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 330 flow [2023-08-30 17:01:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 17:01:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 17:01:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1320 transitions. [2023-08-30 17:01:00,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3815028901734104 [2023-08-30 17:01:00,549 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1320 transitions. [2023-08-30 17:01:00,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1320 transitions. [2023-08-30 17:01:00,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:01:00,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1320 transitions. [2023-08-30 17:01:00,551 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) [2023-08-30 17:01:00,553 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) [2023-08-30 17:01:00,553 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) [2023-08-30 17:01:00,554 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 187 flow. Second operand 10 states and 1320 transitions. [2023-08-30 17:01:00,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 330 flow [2023-08-30 17:01:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 303 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 17:01:00,555 INFO L231 Difference]: Finished difference. Result has 65 places, 30 transitions, 149 flow [2023-08-30 17:01:00,555 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} [2023-08-30 17:01:00,556 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-08-30 17:01:00,556 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 30 transitions, 149 flow [2023-08-30 17:01:00,556 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) [2023-08-30 17:01:00,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:01:00,556 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] [2023-08-30 17:01:00,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 17:01:00,557 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)] === [2023-08-30 17:01:00,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:01:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1600887643, now seen corresponding path program 17 times [2023-08-30 17:01:00,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 17:01:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995285722] [2023-08-30 17:01:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:01:00,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 17:01:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:01:01,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 17:01:01,112 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) [2023-08-30 17:01:01,114 INFO L158 Benchmark]: Toolchain (without parser) took 60201.55ms. Allocated memory was 73.4MB in the beginning and 641.7MB in the end (delta: 568.3MB). Free memory was 47.3MB in the beginning and 496.7MB in the end (delta: -449.4MB). Peak memory consumption was 391.4MB. Max. memory is 16.1GB. [2023-08-30 17:01:01,115 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 17:01:01,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.15ms. Allocated memory is still 73.4MB. Free memory was 47.2MB in the beginning and 30.0MB in the end (delta: 17.2MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2023-08-30 17:01:01,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.19ms. Allocated memory is still 73.4MB. Free memory was 30.0MB in the beginning and 45.8MB in the end (delta: -15.9MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-08-30 17:01:01,115 INFO L158 Benchmark]: Boogie Preprocessor took 37.25ms. Allocated memory is still 73.4MB. Free memory was 45.8MB in the beginning and 43.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 17:01:01,115 INFO L158 Benchmark]: RCFGBuilder took 594.91ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 42.8MB in the beginning and 62.3MB in the end (delta: -19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 17:01:01,116 INFO L158 Benchmark]: TraceAbstraction took 58653.00ms. Allocated memory was 98.6MB in the beginning and 641.7MB in the end (delta: 543.2MB). Free memory was 61.8MB in the beginning and 496.7MB in the end (delta: -434.9MB). Peak memory consumption was 379.3MB. Max. memory is 16.1GB. [2023-08-30 17:01:01,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.15ms. Allocated memory is still 73.4MB. Free memory was 47.2MB in the beginning and 30.0MB in the end (delta: 17.2MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.19ms. Allocated memory is still 73.4MB. Free memory was 30.0MB in the beginning and 45.8MB in the end (delta: -15.9MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.25ms. Allocated memory is still 73.4MB. Free memory was 45.8MB in the beginning and 43.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.91ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 42.8MB in the beginning and 62.3MB in the end (delta: -19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 58653.00ms. Allocated memory was 98.6MB in the beginning and 641.7MB in the end (delta: 543.2MB). Free memory was 61.8MB in the beginning and 496.7MB in the end (delta: -434.9MB). Peak memory consumption was 379.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1s, 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. [2023-08-30 17:01:01,135 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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 17:01:02,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 17:01:02,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 17:01:03,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 17:01:03,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 17:01:03,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 17:01:03,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 17:01:03,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 17:01:03,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 17:01:03,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 17:01:03,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 17:01:03,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 17:01:03,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 17:01:03,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 17:01:03,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 17:01:03,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 17:01:03,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 17:01:03,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 17:01:03,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 17:01:03,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 17:01:03,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 17:01:03,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 17:01:03,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 17:01:03,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 17:01:03,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 17:01:03,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 17:01:03,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 17:01:03,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 17:01:03,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 17:01:03,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 17:01:03,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 17:01:03,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 17:01:03,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 17:01:03,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 17:01:03,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 17:01:03,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 17:01:03,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 17:01:03,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 17:01:03,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 17:01:03,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 17:01:03,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 17:01:03,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-08-30 17:01:03,102 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 17:01:03,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 17:01:03,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 17:01:03,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 17:01:03,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 17:01:03,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 17:01:03,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 17:01:03,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 17:01:03,105 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 17:01:03,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 17:01:03,106 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 17:01:03,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 17:01:03,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 17:01:03,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 17:01:03,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 17:01:03,107 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 17:01:03,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 17:01:03,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 17:01:03,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 17:01:03,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 17:01:03,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:01:03,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 17:01:03,109 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 17:01:03,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 17:01:03,110 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 17:01:03,110 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 17:01:03,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 17:01:03,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 17:01:03,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 17:01:03,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 17:01:03,423 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 17:01:03,423 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 17:01:03,425 INFO L432 ainManager$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 [2023-08-30 17:01:04,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 17:01:04,949 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 17:01:04,950 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-08-30 17:01:04,976 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba9236c7/a81085fc195d47c5b547338ba14fc31d/FLAGce49f61a3 [2023-08-30 17:01:04,996 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba9236c7/a81085fc195d47c5b547338ba14fc31d [2023-08-30 17:01:04,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 17:01:04,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 17:01:05,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 17:01:05,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 17:01:05,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 17:01:05,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:01:04" (1/1) ... [2023-08-30 17:01:05,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95b29e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:05, skipping insertion in model container [2023-08-30 17:01:05,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:01:04" (1/1) ... [2023-08-30 17:01:05,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 17:01:05,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:01:05,653 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] [2023-08-30 17:01:05,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:01:05,720 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 17:01:05,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 17:01:05,799 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] [2023-08-30 17:01:05,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:01:05,816 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 17:01:05,871 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] [2023-08-30 17:01:05,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 17:01:06,027 INFO L208 MainTranslator]: Completed translation [2023-08-30 17:01:06,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06 WrapperNode [2023-08-30 17:01:06,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 17:01:06,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 17:01:06,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 17:01:06,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 17:01:06,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,112 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2023-08-30 17:01:06,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 17:01:06,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 17:01:06,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 17:01:06,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 17:01:06,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 17:01:06,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 17:01:06,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 17:01:06,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 17:01:06,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (1/1) ... [2023-08-30 17:01:06,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 17:01:06,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 17:01:06,226 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) [2023-08-30 17:01:06,248 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 [2023-08-30 17:01:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 17:01:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 17:01:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 17:01:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 17:01:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 17:01:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 17:01:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 17:01:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 17:01:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 17:01:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-30 17:01:06,262 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-30 17:01:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 17:01:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 17:01:06,263 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 17:01:06,610 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 17:01:06,611 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 17:01:06,951 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 17:01:06,961 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 17:01:06,961 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 17:01:06,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:01:06 BoogieIcfgContainer [2023-08-30 17:01:06,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 17:01:06,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 17:01:06,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 17:01:06,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 17:01:06,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:01:04" (1/3) ... [2023-08-30 17:01:06,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67461838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:01:06, skipping insertion in model container [2023-08-30 17:01:06,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:01:06" (2/3) ... [2023-08-30 17:01:06,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67461838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:01:06, skipping insertion in model container [2023-08-30 17:01:06,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:01:06" (3/3) ... [2023-08-30 17:01:06,971 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-08-30 17:01:06,977 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 17:01:06,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 17:01:06,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 17:01:06,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 17:01:07,103 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 17:01:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 360 flow [2023-08-30 17:01:07,227 INFO L130 PetriNetUnfolder]: 10/209 cut-off events. [2023-08-30 17:01:07,227 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:01:07,232 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. [2023-08-30 17:01:07,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 172 transitions, 360 flow [2023-08-30 17:01:07,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 160 transitions, 332 flow [2023-08-30 17:01:07,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 17:01:07,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 160 transitions, 332 flow [2023-08-30 17:01:07,258 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 160 transitions, 332 flow [2023-08-30 17:01:07,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 332 flow [2023-08-30 17:01:07,308 INFO L130 PetriNetUnfolder]: 7/190 cut-off events. [2023-08-30 17:01:07,308 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 17:01:07,310 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. [2023-08-30 17:01:07,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 2340 [2023-08-30 17:01:31,167 WARN L222 SmtUtils]: Spent 5.37s 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) [2023-08-30 17:01:39,341 WARN L222 SmtUtils]: Spent 6.49s 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) [2023-08-30 17:02:08,763 WARN L222 SmtUtils]: Spent 25.57s 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) [2023-08-30 17:02:21,596 WARN L222 SmtUtils]: Spent 12.83s 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) [2023-08-30 17:02:53,313 WARN L222 SmtUtils]: Spent 31.71s 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) [2023-08-30 17:03:03,689 WARN L222 SmtUtils]: Spent 10.37s 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) [2023-08-30 17:05:18,944 WARN L222 SmtUtils]: Spent 2.25m 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) [2023-08-30 17:06:08,315 WARN L222 SmtUtils]: Spent 49.37s 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) [2023-08-30 17:08:19,848 WARN L222 SmtUtils]: Spent 2.19m 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) [2023-08-30 17:09:15,850 WARN L222 SmtUtils]: Spent 56.00s 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) [2023-08-30 17:09:25,828 WARN L222 SmtUtils]: Spent 9.63s 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) [2023-08-30 17:09:32,637 WARN L222 SmtUtils]: Spent 6.81s 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) [2023-08-30 17:10:01,815 WARN L222 SmtUtils]: Spent 29.18s 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) [2023-08-30 17:10:12,973 WARN L222 SmtUtils]: Spent 11.16s 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) [2023-08-30 17:10:12,975 INFO L134 LiptonReduction]: Checked pairs total: 5266 [2023-08-30 17:10:12,975 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 17:10:12,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 17:10:12,989 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;@6ec24e18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 17:10:12,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 17:10:12,991 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 17:10:12,991 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 17:10:12,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:12,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 17:10:12,992 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)] === [2023-08-30 17:10:12,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:12,996 INFO L85 PathProgramCache]: Analyzing trace with hash 599, now seen corresponding path program 1 times [2023-08-30 17:10:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404416000] [2023-08-30 17:10:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:10:13,006 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 [2023-08-30 17:10:13,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:13,007 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) [2023-08-30 17:10:13,009 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 (2)] Waiting until timeout for monitored process [2023-08-30 17:10:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:10:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 17:10:13,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:13,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:13,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404416000] [2023-08-30 17:10:13,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404416000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:13,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:13,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 17:10:13,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006206846] [2023-08-30 17:10:13,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 17:10:13,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 17:10:13,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 17:10:13,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 344 [2023-08-30 17:10:13,180 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) [2023-08-30 17:10:13,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:13,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 344 [2023-08-30 17:10:13,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:14,510 INFO L130 PetriNetUnfolder]: 217/419 cut-off events. [2023-08-30 17:10:14,510 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 17:10:14,512 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. [2023-08-30 17:10:14,514 INFO L137 encePairwiseOnDemand]: 341/344 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 17:10:14,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-08-30 17:10:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 17:10:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 17:10:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 340 transitions. [2023-08-30 17:10:14,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941860465116279 [2023-08-30 17:10:14,537 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 340 transitions. [2023-08-30 17:10:14,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 340 transitions. [2023-08-30 17:10:14,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:14,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 340 transitions. [2023-08-30 17:10:14,544 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) [2023-08-30 17:10:14,550 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) [2023-08-30 17:10:14,550 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) [2023-08-30 17:10:14,552 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 340 transitions. [2023-08-30 17:10:14,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-08-30 17:10:14,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 17:10:14,556 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-08-30 17:10:14,557 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} [2023-08-30 17:10:14,560 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-30 17:10:14,560 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-08-30 17:10:14,560 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) [2023-08-30 17:10:14,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:14,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 17:10:14,579 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 [2023-08-30 17:10:14,761 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 [2023-08-30 17:10:14,762 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)] === [2023-08-30 17:10:14,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash 18294735, now seen corresponding path program 1 times [2023-08-30 17:10:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:14,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739835749] [2023-08-30 17:10:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:10:14,764 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 [2023-08-30 17:10:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:14,765 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) [2023-08-30 17:10:14,792 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 [2023-08-30 17:10:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:10:14,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 17:10:14,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:15,034 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:15,035 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:15,035 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:15,058 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 [2023-08-30 17:10:15,157 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 17:10:15,157 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 [2023-08-30 17:10:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:15,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:15,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739835749] [2023-08-30 17:10:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739835749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:10:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757281787] [2023-08-30 17:10:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:15,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:10:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:10:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:10:15,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 344 [2023-08-30 17:10:15,582 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) [2023-08-30 17:10:15,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:15,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 344 [2023-08-30 17:10:15,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:16,768 INFO L130 PetriNetUnfolder]: 344/668 cut-off events. [2023-08-30 17:10:16,768 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 17:10:16,774 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. [2023-08-30 17:10:16,777 INFO L137 encePairwiseOnDemand]: 336/344 looper letters, 29 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-08-30 17:10:16,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2023-08-30 17:10:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:10:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:10:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-30 17:10:16,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486434108527132 [2023-08-30 17:10:16,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-30 17:10:16,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-30 17:10:16,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:16,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-30 17:10:16,785 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) [2023-08-30 17:10:16,787 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) [2023-08-30 17:10:16,788 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) [2023-08-30 17:10:16,788 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 463 transitions. [2023-08-30 17:10:16,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2023-08-30 17:10:16,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:10:16,789 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-08-30 17:10:16,790 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} [2023-08-30 17:10:16,790 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-08-30 17:10:16,791 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-08-30 17:10:16,791 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) [2023-08-30 17:10:16,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:16,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 17:10:16,807 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 (3)] Forceful destruction successful, exit code 0 [2023-08-30 17:10:17,004 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 [2023-08-30 17:10:17,004 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)] === [2023-08-30 17:10:17,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash 567136177, now seen corresponding path program 1 times [2023-08-30 17:10:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727007793] [2023-08-30 17:10:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:10:17,006 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 [2023-08-30 17:10:17,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:17,009 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) [2023-08-30 17:10:17,011 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 [2023-08-30 17:10:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:10:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 17:10:17,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:17,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:17,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:17,222 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:17,223 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 [2023-08-30 17:10:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:17,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:17,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727007793] [2023-08-30 17:10:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727007793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 17:10:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089275557] [2023-08-30 17:10:17,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:10:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:10:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:10:17,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 344 [2023-08-30 17:10:17,755 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) [2023-08-30 17:10:17,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:17,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 344 [2023-08-30 17:10:17,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:19,877 INFO L130 PetriNetUnfolder]: 483/887 cut-off events. [2023-08-30 17:10:19,878 INFO L131 PetriNetUnfolder]: For 388/396 co-relation queries the response was YES. [2023-08-30 17:10:19,879 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. [2023-08-30 17:10:19,883 INFO L137 encePairwiseOnDemand]: 337/344 looper letters, 35 selfloop transitions, 9 changer transitions 2/48 dead transitions. [2023-08-30 17:10:19,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 262 flow [2023-08-30 17:10:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:10:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:10:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-08-30 17:10:19,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2023-08-30 17:10:19,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-08-30 17:10:19,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-08-30 17:10:19,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:19,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-08-30 17:10:19,892 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) [2023-08-30 17:10:19,895 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) [2023-08-30 17:10:19,897 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) [2023-08-30 17:10:19,897 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 464 transitions. [2023-08-30 17:10:19,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 262 flow [2023-08-30 17:10:19,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:10:19,903 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-08-30 17:10:19,904 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} [2023-08-30 17:10:19,905 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-30 17:10:19,905 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-08-30 17:10:19,905 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) [2023-08-30 17:10:19,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:19,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 17:10:19,922 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 (4)] Forceful destruction successful, exit code 0 [2023-08-30 17:10:20,118 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 [2023-08-30 17:10:20,119 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)] === [2023-08-30 17:10:20,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1225516683, now seen corresponding path program 1 times [2023-08-30 17:10:20,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269659045] [2023-08-30 17:10:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:10:20,124 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 [2023-08-30 17:10:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:20,125 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) [2023-08-30 17:10:20,127 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 [2023-08-30 17:10:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:10:20,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 17:10:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:20,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:20,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269659045] [2023-08-30 17:10:20,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269659045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:20,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:20,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:10:20,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950785278] [2023-08-30 17:10:20,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:20,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 17:10:20,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 17:10:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 17:10:20,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 344 [2023-08-30 17:10:20,347 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) [2023-08-30 17:10:20,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:20,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 344 [2023-08-30 17:10:20,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:21,317 INFO L130 PetriNetUnfolder]: 105/210 cut-off events. [2023-08-30 17:10:21,317 INFO L131 PetriNetUnfolder]: For 167/193 co-relation queries the response was YES. [2023-08-30 17:10:21,318 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. [2023-08-30 17:10:21,318 INFO L137 encePairwiseOnDemand]: 342/344 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 17:10:21,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-08-30 17:10:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 17:10:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 17:10:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-30 17:10:21,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-08-30 17:10:21,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-30 17:10:21,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-30 17:10:21,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:21,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-30 17:10:21,323 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) [2023-08-30 17:10:21,325 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) [2023-08-30 17:10:21,326 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) [2023-08-30 17:10:21,326 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 480 transitions. [2023-08-30 17:10:21,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-08-30 17:10:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 17:10:21,327 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-08-30 17:10:21,327 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} [2023-08-30 17:10:21,328 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-08-30 17:10:21,328 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-08-30 17:10:21,328 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) [2023-08-30 17:10:21,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:21,328 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] [2023-08-30 17:10:21,344 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 [2023-08-30 17:10:21,529 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 [2023-08-30 17:10:21,529 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)] === [2023-08-30 17:10:21,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:21,530 INFO L85 PathProgramCache]: Analyzing trace with hash 244157558, now seen corresponding path program 1 times [2023-08-30 17:10:21,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:21,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111088683] [2023-08-30 17:10:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:10:21,531 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 [2023-08-30 17:10:21,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:21,534 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) [2023-08-30 17:10:21,536 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 [2023-08-30 17:10:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:10:21,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 17:10:21,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:21,862 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 [2023-08-30 17:10:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:21,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:21,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111088683] [2023-08-30 17:10:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111088683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 17:10:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762063988] [2023-08-30 17:10:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 17:10:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 17:10:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 17:10:21,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 344 [2023-08-30 17:10:21,934 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) [2023-08-30 17:10:21,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:21,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 344 [2023-08-30 17:10:21,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:23,157 INFO L130 PetriNetUnfolder]: 47/141 cut-off events. [2023-08-30 17:10:23,157 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-30 17:10:23,158 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. [2023-08-30 17:10:23,158 INFO L137 encePairwiseOnDemand]: 339/344 looper letters, 21 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-08-30 17:10:23,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 128 flow [2023-08-30 17:10:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 17:10:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 17:10:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 632 transitions. [2023-08-30 17:10:23,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2023-08-30 17:10:23,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 632 transitions. [2023-08-30 17:10:23,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 632 transitions. [2023-08-30 17:10:23,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:23,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 632 transitions. [2023-08-30 17:10:23,163 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) [2023-08-30 17:10:23,166 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) [2023-08-30 17:10:23,167 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) [2023-08-30 17:10:23,167 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 4 states and 632 transitions. [2023-08-30 17:10:23,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 128 flow [2023-08-30 17:10:23,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 118 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 17:10:23,168 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 59 flow [2023-08-30 17:10:23,168 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} [2023-08-30 17:10:23,169 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-30 17:10:23,169 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 59 flow [2023-08-30 17:10:23,170 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) [2023-08-30 17:10:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:23,170 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] [2023-08-30 17:10:23,189 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 [2023-08-30 17:10:23,387 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 [2023-08-30 17:10:23,387 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)] === [2023-08-30 17:10:23,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -563409372, now seen corresponding path program 2 times [2023-08-30 17:10:23,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:23,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754966471] [2023-08-30 17:10:23,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:10:23,389 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 [2023-08-30 17:10:23,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:23,390 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) [2023-08-30 17:10:23,392 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 [2023-08-30 17:10:23,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:10:23,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:10:23,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 17:10:23,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:23,892 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:10:23,895 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 [2023-08-30 17:10:23,933 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 [2023-08-30 17:10:23,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:23,957 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 [2023-08-30 17:10:24,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:24,239 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 [2023-08-30 17:10:24,573 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 [2023-08-30 17:10:24,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:24,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:24,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:24,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:24,852 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 [2023-08-30 17:10:25,232 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 [2023-08-30 17:10:25,396 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 [2023-08-30 17:10:25,547 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:10:25,547 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 [2023-08-30 17:10:25,703 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 [2023-08-30 17:10:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:25,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:25,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:25,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754966471] [2023-08-30 17:10:25,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754966471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:25,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:25,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:10:25,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954208039] [2023-08-30 17:10:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:25,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:10:25,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:10:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:10:28,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:10:28,913 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) [2023-08-30 17:10:28,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:28,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:10:28,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:34,152 INFO L130 PetriNetUnfolder]: 97/238 cut-off events. [2023-08-30 17:10:34,152 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 17:10:34,152 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. [2023-08-30 17:10:34,153 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 55 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2023-08-30 17:10:34,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 338 flow [2023-08-30 17:10:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:10:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:10:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1449 transitions. [2023-08-30 17:10:34,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292811839323465 [2023-08-30 17:10:34,159 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1449 transitions. [2023-08-30 17:10:34,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1449 transitions. [2023-08-30 17:10:34,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:34,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1449 transitions. [2023-08-30 17:10:34,164 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) [2023-08-30 17:10:34,168 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) [2023-08-30 17:10:34,169 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) [2023-08-30 17:10:34,169 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 59 flow. Second operand 11 states and 1449 transitions. [2023-08-30 17:10:34,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 338 flow [2023-08-30 17:10:34,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 17:10:34,172 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 187 flow [2023-08-30 17:10:34,172 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} [2023-08-30 17:10:34,175 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-08-30 17:10:34,175 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 187 flow [2023-08-30 17:10:34,176 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) [2023-08-30 17:10:34,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:34,176 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] [2023-08-30 17:10:34,190 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 (7)] Ended with exit code 0 [2023-08-30 17:10:34,390 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 [2023-08-30 17:10:34,391 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)] === [2023-08-30 17:10:34,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -564966616, now seen corresponding path program 3 times [2023-08-30 17:10:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122089227] [2023-08-30 17:10:34,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 17:10:34,392 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 [2023-08-30 17:10:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:34,393 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) [2023-08-30 17:10:34,395 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 [2023-08-30 17:10:34,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 17:10:34,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:10:34,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:10:34,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:34,842 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:10:34,842 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 [2023-08-30 17:10:34,876 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 [2023-08-30 17:10:34,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:34,883 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 [2023-08-30 17:10:35,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:35,037 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 [2023-08-30 17:10:35,272 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:10:35,272 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 [2023-08-30 17:10:35,491 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 [2023-08-30 17:10:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:35,680 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:35,680 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:35,681 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 [2023-08-30 17:10:35,941 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 [2023-08-30 17:10:36,000 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 [2023-08-30 17:10:36,155 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 [2023-08-30 17:10:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:36,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:36,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122089227] [2023-08-30 17:10:36,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122089227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:36,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:10:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651408245] [2023-08-30 17:10:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:36,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:10:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:10:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:10:38,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:10:38,748 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) [2023-08-30 17:10:38,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:38,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:10:38,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:43,482 INFO L130 PetriNetUnfolder]: 112/282 cut-off events. [2023-08-30 17:10:43,483 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-08-30 17:10:43,483 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. [2023-08-30 17:10:43,484 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 58 selfloop transitions, 17 changer transitions 0/75 dead transitions. [2023-08-30 17:10:43,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 482 flow [2023-08-30 17:10:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:10:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:10:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1433 transitions. [2023-08-30 17:10:43,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786997885835095 [2023-08-30 17:10:43,497 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1433 transitions. [2023-08-30 17:10:43,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1433 transitions. [2023-08-30 17:10:43,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:43,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1433 transitions. [2023-08-30 17:10:43,501 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) [2023-08-30 17:10:43,505 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) [2023-08-30 17:10:43,505 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) [2023-08-30 17:10:43,505 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 187 flow. Second operand 11 states and 1433 transitions. [2023-08-30 17:10:43,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 482 flow [2023-08-30 17:10:43,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 482 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 17:10:43,510 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 347 flow [2023-08-30 17:10:43,511 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} [2023-08-30 17:10:43,511 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-30 17:10:43,511 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 347 flow [2023-08-30 17:10:43,512 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) [2023-08-30 17:10:43,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:43,512 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] [2023-08-30 17:10:43,533 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 [2023-08-30 17:10:43,727 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 [2023-08-30 17:10:43,728 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)] === [2023-08-30 17:10:43,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash -206379092, now seen corresponding path program 1 times [2023-08-30 17:10:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633839663] [2023-08-30 17:10:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 17:10:43,729 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 [2023-08-30 17:10:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:43,730 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) [2023-08-30 17:10:43,730 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 [2023-08-30 17:10:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:10:44,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 17:10:44,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:44,069 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 [2023-08-30 17:10:44,128 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 17:10:44,128 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 [2023-08-30 17:10:44,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:44,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:44,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:44,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:44,213 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:44,214 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 [2023-08-30 17:10:44,269 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 [2023-08-30 17:10:44,333 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 [2023-08-30 17:10:44,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:44,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:44,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:44,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633839663] [2023-08-30 17:10:44,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633839663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:44,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:44,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:10:44,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803873772] [2023-08-30 17:10:44,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:44,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:10:44,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:10:44,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:10:45,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 344 [2023-08-30 17:10:45,113 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) [2023-08-30 17:10:45,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:45,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 344 [2023-08-30 17:10:45,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:47,194 INFO L130 PetriNetUnfolder]: 108/316 cut-off events. [2023-08-30 17:10:47,194 INFO L131 PetriNetUnfolder]: For 431/435 co-relation queries the response was YES. [2023-08-30 17:10:47,195 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. [2023-08-30 17:10:47,196 INFO L137 encePairwiseOnDemand]: 337/344 looper letters, 60 selfloop transitions, 15 changer transitions 10/89 dead transitions. [2023-08-30 17:10:47,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 672 flow [2023-08-30 17:10:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:10:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:10:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-08-30 17:10:47,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41521317829457366 [2023-08-30 17:10:47,200 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-08-30 17:10:47,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-08-30 17:10:47,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:47,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-08-30 17:10:47,202 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) [2023-08-30 17:10:47,205 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) [2023-08-30 17:10:47,205 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) [2023-08-30 17:10:47,205 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 347 flow. Second operand 6 states and 857 transitions. [2023-08-30 17:10:47,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 672 flow [2023-08-30 17:10:47,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 664 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 17:10:47,210 INFO L231 Difference]: Finished difference. Result has 73 places, 52 transitions, 346 flow [2023-08-30 17:10:47,210 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} [2023-08-30 17:10:47,211 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-08-30 17:10:47,211 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 52 transitions, 346 flow [2023-08-30 17:10:47,211 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) [2023-08-30 17:10:47,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:47,212 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] [2023-08-30 17:10:47,233 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 [2023-08-30 17:10:47,427 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 [2023-08-30 17:10:47,427 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)] === [2023-08-30 17:10:47,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1346175944, now seen corresponding path program 4 times [2023-08-30 17:10:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:47,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514848768] [2023-08-30 17:10:47,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 17:10:47,428 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 [2023-08-30 17:10:47,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:47,429 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) [2023-08-30 17:10:47,431 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 [2023-08-30 17:10:47,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 17:10:47,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:10:47,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:10:47,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:47,898 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:10:47,898 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 [2023-08-30 17:10:47,921 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 [2023-08-30 17:10:47,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:47,929 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 [2023-08-30 17:10:48,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:48,112 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 [2023-08-30 17:10:48,467 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 [2023-08-30 17:10:48,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:48,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:48,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:48,719 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:48,719 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:48,720 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 [2023-08-30 17:10:48,925 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 [2023-08-30 17:10:49,004 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:10:49,005 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 [2023-08-30 17:10:49,108 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 [2023-08-30 17:10:49,233 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 [2023-08-30 17:10:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:49,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:49,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514848768] [2023-08-30 17:10:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514848768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:49,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:10:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502743730] [2023-08-30 17:10:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:49,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:10:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:10:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:10:51,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:10:51,936 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) [2023-08-30 17:10:51,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:10:51,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:10:51,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:10:56,286 INFO L130 PetriNetUnfolder]: 126/331 cut-off events. [2023-08-30 17:10:56,286 INFO L131 PetriNetUnfolder]: For 657/657 co-relation queries the response was YES. [2023-08-30 17:10:56,287 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. [2023-08-30 17:10:56,288 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 69 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2023-08-30 17:10:56,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 755 flow [2023-08-30 17:10:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:10:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:10:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1450 transitions. [2023-08-30 17:10:56,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831923890063425 [2023-08-30 17:10:56,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1450 transitions. [2023-08-30 17:10:56,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1450 transitions. [2023-08-30 17:10:56,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:10:56,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1450 transitions. [2023-08-30 17:10:56,295 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) [2023-08-30 17:10:56,299 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) [2023-08-30 17:10:56,300 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) [2023-08-30 17:10:56,300 INFO L175 Difference]: Start difference. First operand has 73 places, 52 transitions, 346 flow. Second operand 11 states and 1450 transitions. [2023-08-30 17:10:56,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 755 flow [2023-08-30 17:10:56,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 682 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-30 17:10:56,304 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 433 flow [2023-08-30 17:10:56,305 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} [2023-08-30 17:10:56,305 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2023-08-30 17:10:56,305 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 433 flow [2023-08-30 17:10:56,306 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) [2023-08-30 17:10:56,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:10:56,306 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] [2023-08-30 17:10:56,321 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 [2023-08-30 17:10:56,517 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 [2023-08-30 17:10:56,517 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)] === [2023-08-30 17:10:56,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:10:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 940716116, now seen corresponding path program 5 times [2023-08-30 17:10:56,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:10:56,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769202863] [2023-08-30 17:10:56,518 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 17:10:56,518 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 [2023-08-30 17:10:56,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:10:56,519 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) [2023-08-30 17:10:56,521 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 [2023-08-30 17:10:56,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:10:56,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:10:56,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:10:56,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:10:56,925 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:10:56,925 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 [2023-08-30 17:10:56,943 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 [2023-08-30 17:10:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:56,954 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 [2023-08-30 17:10:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:57,114 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 [2023-08-30 17:10:57,437 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 [2023-08-30 17:10:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:57,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:10:57,612 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:57,612 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:10:57,613 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 [2023-08-30 17:10:57,791 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 [2023-08-30 17:10:57,924 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:10:57,924 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 [2023-08-30 17:10:58,023 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 [2023-08-30 17:10:58,153 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 [2023-08-30 17:10:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:10:58,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:10:58,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:10:58,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769202863] [2023-08-30 17:10:58,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769202863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:10:58,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:10:58,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:10:58,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569779581] [2023-08-30 17:10:58,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:10:58,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:10:58,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:10:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:10:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:11:01,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:11:01,412 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) [2023-08-30 17:11:01,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:01,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:11:01,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:06,577 INFO L130 PetriNetUnfolder]: 127/337 cut-off events. [2023-08-30 17:11:06,577 INFO L131 PetriNetUnfolder]: For 656/656 co-relation queries the response was YES. [2023-08-30 17:11:06,578 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. [2023-08-30 17:11:06,580 INFO L137 encePairwiseOnDemand]: 330/344 looper letters, 69 selfloop transitions, 27 changer transitions 0/96 dead transitions. [2023-08-30 17:11:06,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 789 flow [2023-08-30 17:11:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:11:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:11:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1448 transitions. [2023-08-30 17:11:06,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38266384778012685 [2023-08-30 17:11:06,584 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1448 transitions. [2023-08-30 17:11:06,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1448 transitions. [2023-08-30 17:11:06,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:06,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1448 transitions. [2023-08-30 17:11:06,587 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) [2023-08-30 17:11:06,591 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) [2023-08-30 17:11:06,592 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) [2023-08-30 17:11:06,592 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 433 flow. Second operand 11 states and 1448 transitions. [2023-08-30 17:11:06,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 789 flow [2023-08-30 17:11:06,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 757 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 17:11:06,597 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 500 flow [2023-08-30 17:11:06,597 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} [2023-08-30 17:11:06,597 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-08-30 17:11:06,598 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 500 flow [2023-08-30 17:11:06,598 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) [2023-08-30 17:11:06,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:06,598 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] [2023-08-30 17:11:06,616 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 [2023-08-30 17:11:06,814 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 [2023-08-30 17:11:06,814 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)] === [2023-08-30 17:11:06,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash -689753548, now seen corresponding path program 2 times [2023-08-30 17:11:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:11:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011439675] [2023-08-30 17:11:06,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:11:06,815 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 [2023-08-30 17:11:06,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:11:06,816 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) [2023-08-30 17:11:06,817 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 [2023-08-30 17:11:07,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:11:07,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:11:07,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 17:11:07,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:11:07,194 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 [2023-08-30 17:11:07,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:07,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:07,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:07,317 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:07,317 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 [2023-08-30 17:11:07,390 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 17:11:07,390 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 [2023-08-30 17:11:07,465 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 [2023-08-30 17:11:07,529 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 [2023-08-30 17:11:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:11:07,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:11:07,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:11:07,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011439675] [2023-08-30 17:11:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011439675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:07,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:07,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:11:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395468446] [2023-08-30 17:11:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:11:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:11:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:11:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:11:08,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 344 [2023-08-30 17:11:08,369 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) [2023-08-30 17:11:08,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:08,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 344 [2023-08-30 17:11:08,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:11,259 INFO L130 PetriNetUnfolder]: 122/387 cut-off events. [2023-08-30 17:11:11,260 INFO L131 PetriNetUnfolder]: For 775/779 co-relation queries the response was YES. [2023-08-30 17:11:11,261 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. [2023-08-30 17:11:11,262 INFO L137 encePairwiseOnDemand]: 336/344 looper letters, 52 selfloop transitions, 31 changer transitions 12/101 dead transitions. [2023-08-30 17:11:11,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 890 flow [2023-08-30 17:11:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:11:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:11:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 847 transitions. [2023-08-30 17:11:11,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103682170542636 [2023-08-30 17:11:11,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 847 transitions. [2023-08-30 17:11:11,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 847 transitions. [2023-08-30 17:11:11,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:11,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 847 transitions. [2023-08-30 17:11:11,268 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) [2023-08-30 17:11:11,270 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) [2023-08-30 17:11:11,271 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) [2023-08-30 17:11:11,271 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 500 flow. Second operand 6 states and 847 transitions. [2023-08-30 17:11:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 890 flow [2023-08-30 17:11:11,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 842 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 17:11:11,277 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 554 flow [2023-08-30 17:11:11,277 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} [2023-08-30 17:11:11,278 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2023-08-30 17:11:11,278 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 554 flow [2023-08-30 17:11:11,278 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) [2023-08-30 17:11:11,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:11,279 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] [2023-08-30 17:11:11,298 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 [2023-08-30 17:11:11,494 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 [2023-08-30 17:11:11,494 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)] === [2023-08-30 17:11:11,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1930062128, now seen corresponding path program 6 times [2023-08-30 17:11:11,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:11:11,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644795150] [2023-08-30 17:11:11,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 17:11:11,495 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 [2023-08-30 17:11:11,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:11:11,496 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) [2023-08-30 17:11:11,497 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 [2023-08-30 17:11:11,860 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 17:11:11,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:11:11,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:11:11,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:11:11,907 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 [2023-08-30 17:11:11,922 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:11:11,922 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 [2023-08-30 17:11:11,991 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:11:11,992 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 [2023-08-30 17:11:12,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:12,190 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 [2023-08-30 17:11:12,407 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 [2023-08-30 17:11:12,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:12,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:12,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:12,581 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:12,581 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:12,583 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 [2023-08-30 17:11:12,776 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:11:12,777 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 [2023-08-30 17:11:12,968 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 [2023-08-30 17:11:13,016 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 [2023-08-30 17:11:13,160 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 [2023-08-30 17:11:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:11:13,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:11:13,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:11:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644795150] [2023-08-30 17:11:13,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644795150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:13,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:13,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:11:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175817080] [2023-08-30 17:11:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:13,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:11:13,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:11:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:11:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:11:15,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:11:15,177 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) [2023-08-30 17:11:15,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:15,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:11:15,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:21,472 INFO L130 PetriNetUnfolder]: 149/425 cut-off events. [2023-08-30 17:11:21,472 INFO L131 PetriNetUnfolder]: For 1071/1071 co-relation queries the response was YES. [2023-08-30 17:11:21,473 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. [2023-08-30 17:11:21,474 INFO L137 encePairwiseOnDemand]: 331/344 looper letters, 71 selfloop transitions, 17 changer transitions 23/111 dead transitions. [2023-08-30 17:11:21,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 1050 flow [2023-08-30 17:11:21,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:11:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:11:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1448 transitions. [2023-08-30 17:11:21,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38266384778012685 [2023-08-30 17:11:21,478 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1448 transitions. [2023-08-30 17:11:21,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1448 transitions. [2023-08-30 17:11:21,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:21,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1448 transitions. [2023-08-30 17:11:21,482 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) [2023-08-30 17:11:21,485 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) [2023-08-30 17:11:21,486 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) [2023-08-30 17:11:21,486 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 554 flow. Second operand 11 states and 1448 transitions. [2023-08-30 17:11:21,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 1050 flow [2023-08-30 17:11:21,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 969 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-30 17:11:21,492 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 575 flow [2023-08-30 17:11:21,492 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} [2023-08-30 17:11:21,493 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-08-30 17:11:21,493 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 575 flow [2023-08-30 17:11:21,494 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) [2023-08-30 17:11:21,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:21,494 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] [2023-08-30 17:11:21,513 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 (13)] Ended with exit code 0 [2023-08-30 17:11:21,709 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 [2023-08-30 17:11:21,709 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)] === [2023-08-30 17:11:21,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1718288920, now seen corresponding path program 7 times [2023-08-30 17:11:21,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:11:21,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171555890] [2023-08-30 17:11:21,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 17:11:21,710 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 [2023-08-30 17:11:21,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:11:21,711 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) [2023-08-30 17:11:21,712 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 [2023-08-30 17:11:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:11:22,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:11:22,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:11:22,159 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 [2023-08-30 17:11:22,173 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:11:22,174 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 [2023-08-30 17:11:22,227 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:11:22,228 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 [2023-08-30 17:11:22,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:22,415 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 [2023-08-30 17:11:22,745 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 [2023-08-30 17:11:22,853 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:11:22,853 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 [2023-08-30 17:11:23,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:23,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:23,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:23,055 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:23,055 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 [2023-08-30 17:11:23,256 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 [2023-08-30 17:11:23,295 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 [2023-08-30 17:11:23,427 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 [2023-08-30 17:11:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:11:23,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:11:23,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:11:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171555890] [2023-08-30 17:11:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171555890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:23,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:11:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595731398] [2023-08-30 17:11:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:23,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:11:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:11:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:11:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:11:25,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:11:25,645 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) [2023-08-30 17:11:25,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:25,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:11:25,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:30,558 INFO L130 PetriNetUnfolder]: 143/412 cut-off events. [2023-08-30 17:11:30,558 INFO L131 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2023-08-30 17:11:30,559 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. [2023-08-30 17:11:30,560 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 67 selfloop transitions, 11 changer transitions 28/106 dead transitions. [2023-08-30 17:11:30,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1042 flow [2023-08-30 17:11:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:11:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:11:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1564 transitions. [2023-08-30 17:11:30,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37887596899224807 [2023-08-30 17:11:30,564 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1564 transitions. [2023-08-30 17:11:30,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1564 transitions. [2023-08-30 17:11:30,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:30,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1564 transitions. [2023-08-30 17:11:30,567 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) [2023-08-30 17:11:30,570 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) [2023-08-30 17:11:30,570 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) [2023-08-30 17:11:30,570 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 575 flow. Second operand 12 states and 1564 transitions. [2023-08-30 17:11:30,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1042 flow [2023-08-30 17:11:30,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 958 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-08-30 17:11:30,576 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 584 flow [2023-08-30 17:11:30,576 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} [2023-08-30 17:11:30,576 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2023-08-30 17:11:30,576 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 584 flow [2023-08-30 17:11:30,577 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) [2023-08-30 17:11:30,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:30,577 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] [2023-08-30 17:11:30,599 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 [2023-08-30 17:11:30,797 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 [2023-08-30 17:11:30,797 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)] === [2023-08-30 17:11:30,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1838021900, now seen corresponding path program 3 times [2023-08-30 17:11:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:11:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983384364] [2023-08-30 17:11:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 17:11:30,798 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 [2023-08-30 17:11:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:11:30,800 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) [2023-08-30 17:11:30,801 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 [2023-08-30 17:11:31,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 17:11:31,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:11:31,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 17:11:31,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:11:31,264 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 [2023-08-30 17:11:31,380 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 17:11:31,380 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 [2023-08-30 17:11:31,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:31,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:31,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:31,413 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:31,414 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:31,414 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 [2023-08-30 17:11:31,492 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 [2023-08-30 17:11:31,547 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 [2023-08-30 17:11:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:11:31,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:11:31,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:11:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983384364] [2023-08-30 17:11:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983384364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:31,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:31,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:11:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678372516] [2023-08-30 17:11:31,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:31,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:11:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:11:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:11:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:11:32,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 344 [2023-08-30 17:11:32,395 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) [2023-08-30 17:11:32,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:32,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 344 [2023-08-30 17:11:32,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:35,102 INFO L130 PetriNetUnfolder]: 94/319 cut-off events. [2023-08-30 17:11:35,102 INFO L131 PetriNetUnfolder]: For 940/941 co-relation queries the response was YES. [2023-08-30 17:11:35,103 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. [2023-08-30 17:11:35,104 INFO L137 encePairwiseOnDemand]: 337/344 looper letters, 61 selfloop transitions, 19 changer transitions 11/95 dead transitions. [2023-08-30 17:11:35,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 880 flow [2023-08-30 17:11:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:11:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:11:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 862 transitions. [2023-08-30 17:11:35,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176356589147287 [2023-08-30 17:11:35,108 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 862 transitions. [2023-08-30 17:11:35,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 862 transitions. [2023-08-30 17:11:35,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:35,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 862 transitions. [2023-08-30 17:11:35,109 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) [2023-08-30 17:11:35,110 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) [2023-08-30 17:11:35,111 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) [2023-08-30 17:11:35,111 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 584 flow. Second operand 6 states and 862 transitions. [2023-08-30 17:11:35,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 880 flow [2023-08-30 17:11:35,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 837 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-08-30 17:11:35,118 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 555 flow [2023-08-30 17:11:35,118 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} [2023-08-30 17:11:35,119 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2023-08-30 17:11:35,119 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 555 flow [2023-08-30 17:11:35,120 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) [2023-08-30 17:11:35,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:35,120 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] [2023-08-30 17:11:35,139 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 [2023-08-30 17:11:35,335 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 [2023-08-30 17:11:35,335 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)] === [2023-08-30 17:11:35,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1374990946, now seen corresponding path program 8 times [2023-08-30 17:11:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:11:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149004378] [2023-08-30 17:11:35,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:11:35,336 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 [2023-08-30 17:11:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:11:35,338 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) [2023-08-30 17:11:35,339 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 [2023-08-30 17:11:35,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:11:35,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:11:35,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:11:35,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:11:35,809 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 [2023-08-30 17:11:35,823 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:11:35,823 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 [2023-08-30 17:11:35,882 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:11:35,882 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 [2023-08-30 17:11:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:36,054 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 [2023-08-30 17:11:36,329 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 [2023-08-30 17:11:36,554 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:11:36,555 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 [2023-08-30 17:11:36,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:36,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:36,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:36,663 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:36,663 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:36,664 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 [2023-08-30 17:11:36,901 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 [2023-08-30 17:11:36,950 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 [2023-08-30 17:11:37,101 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 [2023-08-30 17:11:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:11:37,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:11:37,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:11:37,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149004378] [2023-08-30 17:11:37,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149004378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:37,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:37,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:11:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27825187] [2023-08-30 17:11:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:11:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:11:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:11:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:11:40,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:11:40,922 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) [2023-08-30 17:11:40,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:40,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:11:40,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:43,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 17:11:46,231 INFO L130 PetriNetUnfolder]: 111/338 cut-off events. [2023-08-30 17:11:46,231 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2023-08-30 17:11:46,232 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. [2023-08-30 17:11:46,233 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 44 selfloop transitions, 10 changer transitions 34/88 dead transitions. [2023-08-30 17:11:46,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 852 flow [2023-08-30 17:11:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:11:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:11:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1439 transitions. [2023-08-30 17:11:46,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38028541226215645 [2023-08-30 17:11:46,242 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1439 transitions. [2023-08-30 17:11:46,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1439 transitions. [2023-08-30 17:11:46,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:46,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1439 transitions. [2023-08-30 17:11:46,246 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) [2023-08-30 17:11:46,248 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) [2023-08-30 17:11:46,249 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) [2023-08-30 17:11:46,249 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 555 flow. Second operand 11 states and 1439 transitions. [2023-08-30 17:11:46,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 852 flow [2023-08-30 17:11:46,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 791 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-08-30 17:11:46,255 INFO L231 Difference]: Finished difference. Result has 85 places, 50 transitions, 432 flow [2023-08-30 17:11:46,255 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} [2023-08-30 17:11:46,255 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2023-08-30 17:11:46,255 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 50 transitions, 432 flow [2023-08-30 17:11:46,256 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) [2023-08-30 17:11:46,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:46,256 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] [2023-08-30 17:11:46,274 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 [2023-08-30 17:11:46,469 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 [2023-08-30 17:11:46,469 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)] === [2023-08-30 17:11:46,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:11:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2054865112, now seen corresponding path program 9 times [2023-08-30 17:11:46,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:11:46,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602828878] [2023-08-30 17:11:46,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 17:11:46,470 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 [2023-08-30 17:11:46,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:11:46,471 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) [2023-08-30 17:11:46,472 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 [2023-08-30 17:11:46,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 17:11:46,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:11:46,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 17:11:46,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:11:46,910 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:11:46,910 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 [2023-08-30 17:11:46,932 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 [2023-08-30 17:11:46,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:46,938 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 [2023-08-30 17:11:47,204 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 [2023-08-30 17:11:47,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:47,299 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 [2023-08-30 17:11:47,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:47,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:47,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:11:47,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:47,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:11:47,566 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 [2023-08-30 17:11:47,688 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:11:47,688 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 [2023-08-30 17:11:47,863 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 [2023-08-30 17:11:47,921 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 [2023-08-30 17:11:48,048 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 [2023-08-30 17:11:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:11:48,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:11:48,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:11:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602828878] [2023-08-30 17:11:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602828878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:11:48,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:11:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:11:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362013436] [2023-08-30 17:11:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:11:48,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:11:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:11:48,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:11:48,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:11:51,161 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 [] [2023-08-30 17:11:53,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:11:53,502 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) [2023-08-30 17:11:53,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:11:53,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:11:53,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:11:59,966 INFO L130 PetriNetUnfolder]: 123/365 cut-off events. [2023-08-30 17:11:59,966 INFO L131 PetriNetUnfolder]: For 1148/1148 co-relation queries the response was YES. [2023-08-30 17:11:59,966 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. [2023-08-30 17:11:59,967 INFO L137 encePairwiseOnDemand]: 331/344 looper letters, 60 selfloop transitions, 16 changer transitions 20/96 dead transitions. [2023-08-30 17:11:59,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 916 flow [2023-08-30 17:11:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:11:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:11:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1446 transitions. [2023-08-30 17:11:59,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821353065539112 [2023-08-30 17:11:59,971 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1446 transitions. [2023-08-30 17:11:59,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1446 transitions. [2023-08-30 17:11:59,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:11:59,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1446 transitions. [2023-08-30 17:11:59,973 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) [2023-08-30 17:11:59,976 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) [2023-08-30 17:11:59,976 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) [2023-08-30 17:11:59,976 INFO L175 Difference]: Start difference. First operand has 85 places, 50 transitions, 432 flow. Second operand 11 states and 1446 transitions. [2023-08-30 17:11:59,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 916 flow [2023-08-30 17:11:59,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 816 flow, removed 30 selfloop flow, removed 15 redundant places. [2023-08-30 17:11:59,981 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 503 flow [2023-08-30 17:11:59,982 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} [2023-08-30 17:11:59,982 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-08-30 17:11:59,982 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 503 flow [2023-08-30 17:11:59,983 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) [2023-08-30 17:11:59,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:11:59,983 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] [2023-08-30 17:12:00,000 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 [2023-08-30 17:12:00,198 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 [2023-08-30 17:12:00,198 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)] === [2023-08-30 17:12:00,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:12:00,198 INFO L85 PathProgramCache]: Analyzing trace with hash 176700010, now seen corresponding path program 10 times [2023-08-30 17:12:00,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:12:00,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114018125] [2023-08-30 17:12:00,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 17:12:00,199 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 [2023-08-30 17:12:00,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:12:00,200 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) [2023-08-30 17:12:00,201 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 (18)] Waiting until timeout for monitored process [2023-08-30 17:12:00,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 17:12:00,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:12:00,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-30 17:12:00,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:12:00,660 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 [2023-08-30 17:12:00,679 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:12:00,679 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 [2023-08-30 17:12:00,742 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-30 17:12:00,742 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 [2023-08-30 17:12:00,965 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 [2023-08-30 17:12:01,042 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 [2023-08-30 17:12:01,186 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-08-30 17:12:01,187 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 [2023-08-30 17:12:01,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:01,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:01,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:01,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:01,266 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:01,267 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 [2023-08-30 17:12:01,466 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 [2023-08-30 17:12:01,605 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 [2023-08-30 17:12:01,695 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 [2023-08-30 17:12:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:12:01,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:12:01,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:12:01,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114018125] [2023-08-30 17:12:01,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114018125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:12:01,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:12:01,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 17:12:01,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053153040] [2023-08-30 17:12:01,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:12:01,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 17:12:01,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:12:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 17:12:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-30 17:12:04,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 344 [2023-08-30 17:12:04,489 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) [2023-08-30 17:12:04,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:12:04,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 344 [2023-08-30 17:12:04,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:12:10,161 INFO L130 PetriNetUnfolder]: 124/370 cut-off events. [2023-08-30 17:12:10,161 INFO L131 PetriNetUnfolder]: For 1191/1191 co-relation queries the response was YES. [2023-08-30 17:12:10,162 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. [2023-08-30 17:12:10,164 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 51 selfloop transitions, 9 changer transitions 27/87 dead transitions. [2023-08-30 17:12:10,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 865 flow [2023-08-30 17:12:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 17:12:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 17:12:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1566 transitions. [2023-08-30 17:12:10,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793604651162791 [2023-08-30 17:12:10,167 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1566 transitions. [2023-08-30 17:12:10,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1566 transitions. [2023-08-30 17:12:10,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:12:10,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1566 transitions. [2023-08-30 17:12:10,169 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) [2023-08-30 17:12:10,171 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) [2023-08-30 17:12:10,172 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) [2023-08-30 17:12:10,172 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 503 flow. Second operand 12 states and 1566 transitions. [2023-08-30 17:12:10,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 865 flow [2023-08-30 17:12:10,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 87 transitions, 795 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-08-30 17:12:10,178 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 497 flow [2023-08-30 17:12:10,178 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} [2023-08-30 17:12:10,179 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-08-30 17:12:10,179 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 497 flow [2023-08-30 17:12:10,179 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) [2023-08-30 17:12:10,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:12:10,179 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] [2023-08-30 17:12:10,197 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 [2023-08-30 17:12:10,393 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 [2023-08-30 17:12:10,393 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)] === [2023-08-30 17:12:10,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:12:10,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1805889952, now seen corresponding path program 11 times [2023-08-30 17:12:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:12:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165753081] [2023-08-30 17:12:10,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 17:12:10,394 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 [2023-08-30 17:12:10,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:12:10,397 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) [2023-08-30 17:12:10,404 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 [2023-08-30 17:12:10,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:12:10,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:12:10,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 17:12:10,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:12:10,867 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 [2023-08-30 17:12:10,884 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:12:10,884 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 [2023-08-30 17:12:10,963 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:12:10,963 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 [2023-08-30 17:12:11,321 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 [2023-08-30 17:12:11,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:11,418 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 [2023-08-30 17:12:11,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:11,658 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:11,659 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:11,659 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 [2023-08-30 17:12:11,885 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:12:11,885 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 [2023-08-30 17:12:11,999 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 [2023-08-30 17:12:12,045 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 [2023-08-30 17:12:12,226 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 [2023-08-30 17:12:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:12:12,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:12:12,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:12:12,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165753081] [2023-08-30 17:12:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165753081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:12:12,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:12:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:12:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365522026] [2023-08-30 17:12:12,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:12:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:12:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:12:12,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:12:12,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:12:15,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:12:15,362 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) [2023-08-30 17:12:15,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:12:15,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:12:15,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:12:22,164 INFO L130 PetriNetUnfolder]: 126/376 cut-off events. [2023-08-30 17:12:22,164 INFO L131 PetriNetUnfolder]: For 914/914 co-relation queries the response was YES. [2023-08-30 17:12:22,165 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. [2023-08-30 17:12:22,166 INFO L137 encePairwiseOnDemand]: 331/344 looper letters, 63 selfloop transitions, 20 changer transitions 15/98 dead transitions. [2023-08-30 17:12:22,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 899 flow [2023-08-30 17:12:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:12:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:12:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1444 transitions. [2023-08-30 17:12:22,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38160676532769555 [2023-08-30 17:12:22,169 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1444 transitions. [2023-08-30 17:12:22,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1444 transitions. [2023-08-30 17:12:22,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:12:22,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1444 transitions. [2023-08-30 17:12:22,171 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) [2023-08-30 17:12:22,174 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) [2023-08-30 17:12:22,185 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) [2023-08-30 17:12:22,189 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 497 flow. Second operand 11 states and 1444 transitions. [2023-08-30 17:12:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 899 flow [2023-08-30 17:12:22,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 828 flow, removed 23 selfloop flow, removed 13 redundant places. [2023-08-30 17:12:22,211 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 538 flow [2023-08-30 17:12:22,211 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} [2023-08-30 17:12:22,212 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-08-30 17:12:22,212 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 538 flow [2023-08-30 17:12:22,212 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) [2023-08-30 17:12:22,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:12:22,213 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] [2023-08-30 17:12:22,236 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 (19)] Forceful destruction successful, exit code 0 [2023-08-30 17:12:22,429 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 [2023-08-30 17:12:22,429 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)] === [2023-08-30 17:12:22,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:12:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1262131182, now seen corresponding path program 12 times [2023-08-30 17:12:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:12:22,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408322518] [2023-08-30 17:12:22,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 17:12:22,430 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 [2023-08-30 17:12:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:12:22,431 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) [2023-08-30 17:12:22,435 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 [2023-08-30 17:12:22,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 17:12:22,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:12:22,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 17:12:22,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:12:22,895 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:12:22,895 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 [2023-08-30 17:12:22,917 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 [2023-08-30 17:12:22,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:22,924 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 [2023-08-30 17:12:23,203 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 [2023-08-30 17:12:23,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:23,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:23,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:23,406 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:23,406 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:23,407 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 [2023-08-30 17:12:23,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:23,519 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 [2023-08-30 17:12:23,766 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:12:23,767 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 [2023-08-30 17:12:23,877 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 [2023-08-30 17:12:23,996 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 [2023-08-30 17:12:24,086 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 [2023-08-30 17:12:24,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:12:24,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:12:24,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:12:24,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408322518] [2023-08-30 17:12:24,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408322518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:12:24,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:12:24,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:12:24,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910050087] [2023-08-30 17:12:24,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:12:24,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:12:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:12:24,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:12:24,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:12:26,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:12:26,403 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) [2023-08-30 17:12:26,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:12:26,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:12:26,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:12:32,909 INFO L130 PetriNetUnfolder]: 106/326 cut-off events. [2023-08-30 17:12:32,910 INFO L131 PetriNetUnfolder]: For 920/920 co-relation queries the response was YES. [2023-08-30 17:12:32,910 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. [2023-08-30 17:12:32,911 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 60 selfloop transitions, 27 changer transitions 15/102 dead transitions. [2023-08-30 17:12:32,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 102 transitions, 953 flow [2023-08-30 17:12:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:12:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:12:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1444 transitions. [2023-08-30 17:12:32,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38160676532769555 [2023-08-30 17:12:32,914 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1444 transitions. [2023-08-30 17:12:32,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1444 transitions. [2023-08-30 17:12:32,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:12:32,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1444 transitions. [2023-08-30 17:12:32,916 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) [2023-08-30 17:12:32,918 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) [2023-08-30 17:12:32,918 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) [2023-08-30 17:12:32,918 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 538 flow. Second operand 11 states and 1444 transitions. [2023-08-30 17:12:32,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 102 transitions, 953 flow [2023-08-30 17:12:32,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 102 transitions, 930 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 17:12:32,922 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 642 flow [2023-08-30 17:12:32,922 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} [2023-08-30 17:12:32,922 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-08-30 17:12:32,922 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 642 flow [2023-08-30 17:12:32,923 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) [2023-08-30 17:12:32,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:12:32,923 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] [2023-08-30 17:12:32,936 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 [2023-08-30 17:12:33,123 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 [2023-08-30 17:12:33,123 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)] === [2023-08-30 17:12:33,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:12:33,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2026610536, now seen corresponding path program 13 times [2023-08-30 17:12:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:12:33,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004726006] [2023-08-30 17:12:33,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 17:12:33,125 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 [2023-08-30 17:12:33,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:12:33,125 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) [2023-08-30 17:12:33,126 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 [2023-08-30 17:12:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:12:33,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:12:33,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:12:33,621 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 [2023-08-30 17:12:33,635 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:12:33,635 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 [2023-08-30 17:12:33,687 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:12:33,688 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 [2023-08-30 17:12:33,986 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 [2023-08-30 17:12:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:34,071 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 [2023-08-30 17:12:34,239 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:12:34,240 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 [2023-08-30 17:12:34,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:34,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:34,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:34,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:34,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:34,420 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 [2023-08-30 17:12:34,626 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 [2023-08-30 17:12:34,660 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 [2023-08-30 17:12:34,793 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 [2023-08-30 17:12:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:12:34,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:12:34,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:12:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004726006] [2023-08-30 17:12:34,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004726006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:12:34,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:12:34,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:12:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693440459] [2023-08-30 17:12:34,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:12:34,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:12:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:12:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:12:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:12:38,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:12:38,009 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) [2023-08-30 17:12:38,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:12:38,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:12:38,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:12:42,619 INFO L130 PetriNetUnfolder]: 99/312 cut-off events. [2023-08-30 17:12:42,620 INFO L131 PetriNetUnfolder]: For 1363/1363 co-relation queries the response was YES. [2023-08-30 17:12:42,620 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. [2023-08-30 17:12:42,621 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 64 selfloop transitions, 11 changer transitions 25/100 dead transitions. [2023-08-30 17:12:42,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 1078 flow [2023-08-30 17:12:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:12:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:12:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1434 transitions. [2023-08-30 17:12:42,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896405919661735 [2023-08-30 17:12:42,624 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1434 transitions. [2023-08-30 17:12:42,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1434 transitions. [2023-08-30 17:12:42,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:12:42,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1434 transitions. [2023-08-30 17:12:42,626 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) [2023-08-30 17:12:42,628 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) [2023-08-30 17:12:42,629 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) [2023-08-30 17:12:42,629 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 642 flow. Second operand 11 states and 1434 transitions. [2023-08-30 17:12:42,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 1078 flow [2023-08-30 17:12:42,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 100 transitions, 1033 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-30 17:12:42,633 INFO L231 Difference]: Finished difference. Result has 94 places, 70 transitions, 686 flow [2023-08-30 17:12:42,633 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} [2023-08-30 17:12:42,633 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2023-08-30 17:12:42,634 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 70 transitions, 686 flow [2023-08-30 17:12:42,634 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) [2023-08-30 17:12:42,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:12:42,634 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] [2023-08-30 17:12:42,647 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 [2023-08-30 17:12:42,834 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 [2023-08-30 17:12:42,834 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)] === [2023-08-30 17:12:42,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:12:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash -580311594, now seen corresponding path program 14 times [2023-08-30 17:12:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:12:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571129403] [2023-08-30 17:12:42,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 17:12:42,835 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 [2023-08-30 17:12:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:12:42,836 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) [2023-08-30 17:12:42,841 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 [2023-08-30 17:12:43,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:12:43,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:12:43,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 17:12:43,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:12:43,348 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:12:43,348 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 [2023-08-30 17:12:43,367 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 [2023-08-30 17:12:43,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:43,377 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 [2023-08-30 17:12:43,662 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 [2023-08-30 17:12:43,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:43,746 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 [2023-08-30 17:12:44,021 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:12:44,022 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 [2023-08-30 17:12:44,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:44,134 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:44,134 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:44,135 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 [2023-08-30 17:12:44,360 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 [2023-08-30 17:12:44,396 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 [2023-08-30 17:12:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:44,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:44,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:44,473 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:44,473 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:44,474 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 [2023-08-30 17:12:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:12:44,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:12:44,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:12:44,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571129403] [2023-08-30 17:12:44,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571129403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:12:44,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:12:44,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:12:44,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144323229] [2023-08-30 17:12:44,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:12:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:12:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:12:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:12:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:12:47,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:12:47,678 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) [2023-08-30 17:12:47,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:12:47,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:12:47,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:12:52,621 INFO L130 PetriNetUnfolder]: 90/293 cut-off events. [2023-08-30 17:12:52,621 INFO L131 PetriNetUnfolder]: For 1253/1253 co-relation queries the response was YES. [2023-08-30 17:12:52,622 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. [2023-08-30 17:12:52,622 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 59 selfloop transitions, 11 changer transitions 26/96 dead transitions. [2023-08-30 17:12:52,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 1024 flow [2023-08-30 17:12:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:12:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:12:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1436 transitions. [2023-08-30 17:12:52,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379492600422833 [2023-08-30 17:12:52,625 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1436 transitions. [2023-08-30 17:12:52,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1436 transitions. [2023-08-30 17:12:52,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:12:52,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1436 transitions. [2023-08-30 17:12:52,626 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) [2023-08-30 17:12:52,628 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) [2023-08-30 17:12:52,628 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) [2023-08-30 17:12:52,628 INFO L175 Difference]: Start difference. First operand has 94 places, 70 transitions, 686 flow. Second operand 11 states and 1436 transitions. [2023-08-30 17:12:52,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 1024 flow [2023-08-30 17:12:52,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 965 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-30 17:12:52,632 INFO L231 Difference]: Finished difference. Result has 96 places, 63 transitions, 597 flow [2023-08-30 17:12:52,633 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} [2023-08-30 17:12:52,633 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-08-30 17:12:52,633 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 63 transitions, 597 flow [2023-08-30 17:12:52,633 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) [2023-08-30 17:12:52,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:12:52,633 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] [2023-08-30 17:12:52,647 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 [2023-08-30 17:12:52,833 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 [2023-08-30 17:12:52,834 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)] === [2023-08-30 17:12:52,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:12:52,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1793493772, now seen corresponding path program 15 times [2023-08-30 17:12:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:12:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417773083] [2023-08-30 17:12:52,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 17:12:52,835 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 [2023-08-30 17:12:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:12:52,836 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) [2023-08-30 17:12:52,837 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 [2023-08-30 17:12:53,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 17:12:53,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:12:53,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:12:53,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:12:53,384 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 [2023-08-30 17:12:53,399 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:12:53,400 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 [2023-08-30 17:12:53,453 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:12:53,453 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 [2023-08-30 17:12:53,767 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 [2023-08-30 17:12:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:53,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:53,942 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:53,942 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:12:53,943 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 [2023-08-30 17:12:54,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:12:54,063 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 [2023-08-30 17:12:54,219 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:12:54,219 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 [2023-08-30 17:12:54,388 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 [2023-08-30 17:12:54,441 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 [2023-08-30 17:12:54,561 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 [2023-08-30 17:12:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:12:54,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:12:54,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:12:54,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417773083] [2023-08-30 17:12:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417773083] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:12:54,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:12:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:12:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039552763] [2023-08-30 17:12:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:12:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:12:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:12:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:12:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:12:57,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:12:57,023 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) [2023-08-30 17:12:57,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:12:57,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:12:57,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:13:04,333 INFO L130 PetriNetUnfolder]: 71/237 cut-off events. [2023-08-30 17:13:04,333 INFO L131 PetriNetUnfolder]: For 997/997 co-relation queries the response was YES. [2023-08-30 17:13:04,334 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. [2023-08-30 17:13:04,335 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 49 selfloop transitions, 13 changer transitions 23/85 dead transitions. [2023-08-30 17:13:04,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 85 transitions, 844 flow [2023-08-30 17:13:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:13:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:13:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1436 transitions. [2023-08-30 17:13:04,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379492600422833 [2023-08-30 17:13:04,337 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1436 transitions. [2023-08-30 17:13:04,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1436 transitions. [2023-08-30 17:13:04,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:13:04,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1436 transitions. [2023-08-30 17:13:04,339 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) [2023-08-30 17:13:04,340 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) [2023-08-30 17:13:04,341 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) [2023-08-30 17:13:04,341 INFO L175 Difference]: Start difference. First operand has 96 places, 63 transitions, 597 flow. Second operand 11 states and 1436 transitions. [2023-08-30 17:13:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 85 transitions, 844 flow [2023-08-30 17:13:04,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 790 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-30 17:13:04,345 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 492 flow [2023-08-30 17:13:04,345 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} [2023-08-30 17:13:04,346 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-08-30 17:13:04,346 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 492 flow [2023-08-30 17:13:04,346 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) [2023-08-30 17:13:04,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:13:04,346 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] [2023-08-30 17:13:04,361 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 [2023-08-30 17:13:04,549 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 [2023-08-30 17:13:04,549 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)] === [2023-08-30 17:13:04,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:13:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1037951086, now seen corresponding path program 16 times [2023-08-30 17:13:04,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:13:04,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723594844] [2023-08-30 17:13:04,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 17:13:04,550 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 [2023-08-30 17:13:04,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:13:04,551 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) [2023-08-30 17:13:04,552 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 [2023-08-30 17:13:05,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 17:13:05,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:13:05,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 17:13:05,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:13:05,092 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 [2023-08-30 17:13:05,107 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:13:05,107 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 [2023-08-30 17:13:05,167 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:13:05,167 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 [2023-08-30 17:13:05,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:05,340 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 [2023-08-30 17:13:05,637 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 [2023-08-30 17:13:05,821 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:13:05,821 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 [2023-08-30 17:13:05,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:05,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:05,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:05,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:05,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:05,910 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 [2023-08-30 17:13:06,092 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 [2023-08-30 17:13:06,226 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 [2023-08-30 17:13:06,344 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 [2023-08-30 17:13:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:13:06,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:13:06,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:13:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723594844] [2023-08-30 17:13:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723594844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:13:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:13:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:13:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347962209] [2023-08-30 17:13:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:13:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:13:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:13:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:13:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:13:09,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:13:09,198 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) [2023-08-30 17:13:09,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:13:09,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:13:09,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:13:14,059 INFO L130 PetriNetUnfolder]: 53/196 cut-off events. [2023-08-30 17:13:14,059 INFO L131 PetriNetUnfolder]: For 770/770 co-relation queries the response was YES. [2023-08-30 17:13:14,060 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. [2023-08-30 17:13:14,061 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 59 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-08-30 17:13:14,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 74 transitions, 743 flow [2023-08-30 17:13:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:13:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:13:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1426 transitions. [2023-08-30 17:13:14,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37684989429175475 [2023-08-30 17:13:14,063 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1426 transitions. [2023-08-30 17:13:14,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1426 transitions. [2023-08-30 17:13:14,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:13:14,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1426 transitions. [2023-08-30 17:13:14,065 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) [2023-08-30 17:13:14,066 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) [2023-08-30 17:13:14,067 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) [2023-08-30 17:13:14,067 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 492 flow. Second operand 11 states and 1426 transitions. [2023-08-30 17:13:14,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 74 transitions, 743 flow [2023-08-30 17:13:14,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 74 transitions, 677 flow, removed 18 selfloop flow, removed 10 redundant places. [2023-08-30 17:13:14,070 INFO L231 Difference]: Finished difference. Result has 95 places, 61 transitions, 540 flow [2023-08-30 17:13:14,070 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} [2023-08-30 17:13:14,071 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-08-30 17:13:14,071 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 61 transitions, 540 flow [2023-08-30 17:13:14,071 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) [2023-08-30 17:13:14,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:13:14,072 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] [2023-08-30 17:13:14,085 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 [2023-08-30 17:13:14,276 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 [2023-08-30 17:13:14,277 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)] === [2023-08-30 17:13:14,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:13:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1037951070, now seen corresponding path program 4 times [2023-08-30 17:13:14,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:13:14,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263212076] [2023-08-30 17:13:14,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 17:13:14,278 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 [2023-08-30 17:13:14,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:13:14,279 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) [2023-08-30 17:13:14,279 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 [2023-08-30 17:13:14,688 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 17:13:14,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:13:14,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 17:13:14,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:13:14,713 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 [2023-08-30 17:13:14,782 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-30 17:13:14,782 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 [2023-08-30 17:13:14,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:14,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:14,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:14,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:14,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:14,843 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 [2023-08-30 17:13:14,916 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 [2023-08-30 17:13:14,973 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 [2023-08-30 17:13:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:13:15,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:13:15,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:13:15,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263212076] [2023-08-30 17:13:15,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263212076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:13:15,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:13:15,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 17:13:15,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786475329] [2023-08-30 17:13:15,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:13:15,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 17:13:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:13:15,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 17:13:15,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 17:13:15,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 344 [2023-08-30 17:13:15,919 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) [2023-08-30 17:13:15,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:13:15,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 344 [2023-08-30 17:13:15,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:13:18,390 INFO L130 PetriNetUnfolder]: 45/194 cut-off events. [2023-08-30 17:13:18,390 INFO L131 PetriNetUnfolder]: For 724/725 co-relation queries the response was YES. [2023-08-30 17:13:18,391 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. [2023-08-30 17:13:18,391 INFO L137 encePairwiseOnDemand]: 338/344 looper letters, 46 selfloop transitions, 16 changer transitions 5/72 dead transitions. [2023-08-30 17:13:18,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 72 transitions, 714 flow [2023-08-30 17:13:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 17:13:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 17:13:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 847 transitions. [2023-08-30 17:13:18,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103682170542636 [2023-08-30 17:13:18,395 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 847 transitions. [2023-08-30 17:13:18,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 847 transitions. [2023-08-30 17:13:18,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:13:18,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 847 transitions. [2023-08-30 17:13:18,396 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) [2023-08-30 17:13:18,398 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) [2023-08-30 17:13:18,398 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) [2023-08-30 17:13:18,398 INFO L175 Difference]: Start difference. First operand has 95 places, 61 transitions, 540 flow. Second operand 6 states and 847 transitions. [2023-08-30 17:13:18,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 72 transitions, 714 flow [2023-08-30 17:13:18,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 72 transitions, 660 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-30 17:13:18,402 INFO L231 Difference]: Finished difference. Result has 97 places, 57 transitions, 506 flow [2023-08-30 17:13:18,402 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} [2023-08-30 17:13:18,402 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2023-08-30 17:13:18,402 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 57 transitions, 506 flow [2023-08-30 17:13:18,403 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) [2023-08-30 17:13:18,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:13:18,403 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] [2023-08-30 17:13:18,416 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 (25)] Forceful destruction successful, exit code 0 [2023-08-30 17:13:18,603 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 [2023-08-30 17:13:18,603 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)] === [2023-08-30 17:13:18,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:13:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1059341694, now seen corresponding path program 17 times [2023-08-30 17:13:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:13:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435824766] [2023-08-30 17:13:18,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 17:13:18,604 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 [2023-08-30 17:13:18,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:13:18,605 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) [2023-08-30 17:13:18,606 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 [2023-08-30 17:13:19,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 17:13:19,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:13:19,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:13:19,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:13:19,132 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 [2023-08-30 17:13:19,148 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:13:19,148 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 [2023-08-30 17:13:19,204 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:13:19,204 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 [2023-08-30 17:13:19,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:19,370 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 [2023-08-30 17:13:19,682 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 [2023-08-30 17:13:19,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:19,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:19,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:19,875 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:19,875 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:19,879 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 [2023-08-30 17:13:20,000 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:13:20,000 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 [2023-08-30 17:13:20,160 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 [2023-08-30 17:13:20,285 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 [2023-08-30 17:13:20,392 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 [2023-08-30 17:13:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:13:20,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:13:20,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:13:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435824766] [2023-08-30 17:13:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435824766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:13:20,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:13:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:13:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568215608] [2023-08-30 17:13:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:13:20,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:13:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:13:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:13:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:13:22,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:13:22,938 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) [2023-08-30 17:13:22,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:13:22,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:13:22,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:13:28,781 INFO L130 PetriNetUnfolder]: 51/201 cut-off events. [2023-08-30 17:13:28,781 INFO L131 PetriNetUnfolder]: For 785/785 co-relation queries the response was YES. [2023-08-30 17:13:28,781 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. [2023-08-30 17:13:28,782 INFO L137 encePairwiseOnDemand]: 333/344 looper letters, 51 selfloop transitions, 15 changer transitions 10/76 dead transitions. [2023-08-30 17:13:28,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 76 transitions, 759 flow [2023-08-30 17:13:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:13:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:13:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1427 transitions. [2023-08-30 17:13:28,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771141649048626 [2023-08-30 17:13:28,786 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1427 transitions. [2023-08-30 17:13:28,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1427 transitions. [2023-08-30 17:13:28,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:13:28,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1427 transitions. [2023-08-30 17:13:28,787 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) [2023-08-30 17:13:28,789 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) [2023-08-30 17:13:28,789 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) [2023-08-30 17:13:28,790 INFO L175 Difference]: Start difference. First operand has 97 places, 57 transitions, 506 flow. Second operand 11 states and 1427 transitions. [2023-08-30 17:13:28,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 76 transitions, 759 flow [2023-08-30 17:13:28,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 76 transitions, 724 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 17:13:28,793 INFO L231 Difference]: Finished difference. Result has 101 places, 58 transitions, 543 flow [2023-08-30 17:13:28,793 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} [2023-08-30 17:13:28,794 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-08-30 17:13:28,794 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 58 transitions, 543 flow [2023-08-30 17:13:28,794 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) [2023-08-30 17:13:28,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:13:28,794 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] [2023-08-30 17:13:28,807 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 (26)] Forceful destruction successful, exit code 0 [2023-08-30 17:13:28,995 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 [2023-08-30 17:13:28,995 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)] === [2023-08-30 17:13:28,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:13:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash -785293328, now seen corresponding path program 18 times [2023-08-30 17:13:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:13:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033310329] [2023-08-30 17:13:28,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 17:13:28,996 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 [2023-08-30 17:13:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:13:28,997 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) [2023-08-30 17:13:28,998 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 [2023-08-30 17:13:29,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 17:13:29,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 17:13:29,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:13:29,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:13:29,565 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:13:29,565 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 [2023-08-30 17:13:29,587 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 [2023-08-30 17:13:29,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:29,594 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 [2023-08-30 17:13:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:29,755 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 [2023-08-30 17:13:30,065 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 [2023-08-30 17:13:30,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:30,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:30,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:30,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:30,251 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:30,251 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 [2023-08-30 17:13:30,455 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-30 17:13:30,456 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 [2023-08-30 17:13:30,534 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 [2023-08-30 17:13:30,651 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 [2023-08-30 17:13:30,763 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 [2023-08-30 17:13:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 17:13:30,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 17:13:30,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 17:13:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033310329] [2023-08-30 17:13:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033310329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 17:13:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 17:13:30,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 17:13:30,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749021135] [2023-08-30 17:13:30,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 17:13:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 17:13:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 17:13:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 17:13:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-30 17:13:33,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 344 [2023-08-30 17:13:33,807 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) [2023-08-30 17:13:33,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 17:13:33,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 344 [2023-08-30 17:13:33,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 17:13:40,554 INFO L130 PetriNetUnfolder]: 51/199 cut-off events. [2023-08-30 17:13:40,554 INFO L131 PetriNetUnfolder]: For 746/746 co-relation queries the response was YES. [2023-08-30 17:13:40,555 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. [2023-08-30 17:13:40,555 INFO L137 encePairwiseOnDemand]: 332/344 looper letters, 59 selfloop transitions, 18 changer transitions 1/78 dead transitions. [2023-08-30 17:13:40,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 78 transitions, 819 flow [2023-08-30 17:13:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 17:13:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 17:13:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1430 transitions. [2023-08-30 17:13:40,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37790697674418605 [2023-08-30 17:13:40,558 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1430 transitions. [2023-08-30 17:13:40,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1430 transitions. [2023-08-30 17:13:40,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 17:13:40,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1430 transitions. [2023-08-30 17:13:40,560 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) [2023-08-30 17:13:40,562 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) [2023-08-30 17:13:40,563 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) [2023-08-30 17:13:40,563 INFO L175 Difference]: Start difference. First operand has 101 places, 58 transitions, 543 flow. Second operand 11 states and 1430 transitions. [2023-08-30 17:13:40,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 78 transitions, 819 flow [2023-08-30 17:13:40,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 78 transitions, 771 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-08-30 17:13:40,568 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 599 flow [2023-08-30 17:13:40,568 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} [2023-08-30 17:13:40,569 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2023-08-30 17:13:40,569 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 599 flow [2023-08-30 17:13:40,569 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) [2023-08-30 17:13:40,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 17:13:40,569 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] [2023-08-30 17:13:40,584 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 (27)] Ended with exit code 0 [2023-08-30 17:13:40,776 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 [2023-08-30 17:13:40,777 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)] === [2023-08-30 17:13:40,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 17:13:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash 180939026, now seen corresponding path program 19 times [2023-08-30 17:13:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 17:13:40,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951026094] [2023-08-30 17:13:40,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 17:13:40,778 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 [2023-08-30 17:13:40,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 17:13:40,779 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) [2023-08-30 17:13:40,780 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 [2023-08-30 17:13:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 17:13:41,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 17:13:41,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 17:13:41,302 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 [2023-08-30 17:13:41,320 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 17:13:41,321 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 [2023-08-30 17:13:41,373 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-30 17:13:41,373 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 [2023-08-30 17:13:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:41,534 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 [2023-08-30 17:13:41,843 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 [2023-08-30 17:13:42,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:42,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:42,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 17:13:42,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:42,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 17:13:42,010 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 [2023-08-30 17:13:42,183 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 Killed by 15