./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/pthread-ext/28_buggy_simple_loop1_vf.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --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 08:31:47,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:31:47,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:31:47,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:31:47,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:31:47,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:31:47,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:31:47,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:31:47,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:31:47,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:31:47,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:31:47,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:31:47,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:31:47,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:31:47,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:31:47,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:31:47,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:31:47,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:31:47,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:31:47,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:31:47,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:31:47,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:31:47,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:31:47,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:31:47,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:31:47,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:31:47,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:31:47,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:31:47,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:31:47,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:31:47,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:31:47,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:31:47,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:31:47,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:31:47,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:31:47,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:31:47,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:31:47,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:31:47,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:31:47,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:31:47,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:31:47,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:31:47,288 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:31:47,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:31:47,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:31:47,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:31:47,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:31:47,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:31:47,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:31:47,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:31:47,291 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:31:47,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:31:47,291 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:31:47,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:31:47,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:31:47,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:31:47,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:31:47,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:31:47,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:31:47,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:31:47,293 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:31:47,293 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:31:47,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:31:47,293 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:31:47,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:31:47,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:31:47,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:31:47,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:31:47,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:31:47,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:31:47,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:31:47,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:31:47,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:31:47,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:31:47,295 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:31:47,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:31:47,295 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:31:47,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:31:47,296 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:31:47,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:31:47,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:31:47,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:31:47,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:31:47,556 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:31:47,556 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:31:47,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 08:31:48,464 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:31:48,749 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:31:48,752 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 08:31:48,766 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d61d677/c33a8be6fcc54ba98a6503e447694f21/FLAG5c8023891 [2023-08-30 08:31:48,781 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12d61d677/c33a8be6fcc54ba98a6503e447694f21 [2023-08-30 08:31:48,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:31:48,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:31:48,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:31:48,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:31:48,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:31:48,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:31:48" (1/1) ... [2023-08-30 08:31:48,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a455c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:48, skipping insertion in model container [2023-08-30 08:31:48,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:31:48" (1/1) ... [2023-08-30 08:31:48,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:31:48,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:31:49,044 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 08:31:49,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:31:49,053 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:31:49,081 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 08:31:49,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:31:49,106 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:31:49,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49 WrapperNode [2023-08-30 08:31:49,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:31:49,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:31:49,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:31:49,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:31:49,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,137 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-08-30 08:31:49,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:31:49,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:31:49,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:31:49,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:31:49,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:31:49,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:31:49,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:31:49,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:31:49,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (1/1) ... [2023-08-30 08:31:49,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:31:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:49,179 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 08:31:49,186 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 08:31:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:31:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:31:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:31:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:31:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:31:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:31:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:31:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:31:49,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:31:49,210 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 08:31:49,318 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:31:49,319 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:31:49,471 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:31:49,475 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:31:49,475 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 08:31:49,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:31:49 BoogieIcfgContainer [2023-08-30 08:31:49,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:31:49,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:31:49,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:31:49,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:31:49,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:31:48" (1/3) ... [2023-08-30 08:31:49,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9aea6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:31:49, skipping insertion in model container [2023-08-30 08:31:49,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:31:49" (2/3) ... [2023-08-30 08:31:49,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9aea6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:31:49, skipping insertion in model container [2023-08-30 08:31:49,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:31:49" (3/3) ... [2023-08-30 08:31:49,482 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-08-30 08:31:49,486 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:31:49,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:31:49,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 08:31:49,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:31:49,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:31:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 82 transitions, 169 flow [2023-08-30 08:31:49,678 INFO L130 PetriNetUnfolder]: 10/92 cut-off events. [2023-08-30 08:31:49,679 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:31:49,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 10/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-30 08:31:49,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 82 transitions, 169 flow [2023-08-30 08:31:49,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 82 transitions, 169 flow [2023-08-30 08:31:49,689 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:31:49,699 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 82 transitions, 169 flow [2023-08-30 08:31:49,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 82 transitions, 169 flow [2023-08-30 08:31:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 82 transitions, 169 flow [2023-08-30 08:31:49,727 INFO L130 PetriNetUnfolder]: 10/92 cut-off events. [2023-08-30 08:31:49,727 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:31:49,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 92 events. 10/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2023-08-30 08:31:49,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 1508 [2023-08-30 08:31:51,296 INFO L134 LiptonReduction]: Checked pairs total: 1326 [2023-08-30 08:31:51,296 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 08:31:51,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:31:51,309 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;@2f91e50d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:31:51,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-30 08:31:51,311 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 08:31:51,311 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:31:51,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:51,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 08:31:51,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:51,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash 356566008, now seen corresponding path program 1 times [2023-08-30 08:31:51,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:51,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727475264] [2023-08-30 08:31:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:51,450 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 08:31:51,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727475264] [2023-08-30 08:31:51,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727475264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:51,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:51,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:31:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471274558] [2023-08-30 08:31:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:51,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:31:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:31:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:31:51,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 162 [2023-08-30 08:31:51,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 08:31:51,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:51,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 162 [2023-08-30 08:31:51,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:51,567 INFO L130 PetriNetUnfolder]: 53/117 cut-off events. [2023-08-30 08:31:51,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:31:51,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 117 events. 53/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 388 event pairs, 24 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 224. Up to 75 conditions per place. [2023-08-30 08:31:51,569 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 26 selfloop transitions, 2 changer transitions 2/31 dead transitions. [2023-08-30 08:31:51,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 31 transitions, 127 flow [2023-08-30 08:31:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:31:51,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:31:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 08:31:51,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2023-08-30 08:31:51,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 08:31:51,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 08:31:51,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:51,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 08:31:51,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 08:31:51,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 08:31:51,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 08:31:51,596 INFO L175 Difference]: Start difference. First operand has 21 places, 22 transitions, 49 flow. Second operand 3 states and 246 transitions. [2023-08-30 08:31:51,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 31 transitions, 127 flow [2023-08-30 08:31:51,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:31:51,599 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 63 flow [2023-08-30 08:31:51,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2023-08-30 08:31:51,602 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-08-30 08:31:51,602 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 63 flow [2023-08-30 08:31:51,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 08:31:51,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:51,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:51,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:31:51,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:51,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:51,603 INFO L85 PathProgramCache]: Analyzing trace with hash -937414513, now seen corresponding path program 1 times [2023-08-30 08:31:51,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:51,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790139354] [2023-08-30 08:31:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:51,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:51,662 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 08:31:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790139354] [2023-08-30 08:31:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790139354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:51,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:51,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:31:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412871217] [2023-08-30 08:31:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:31:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:31:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:31:51,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:31:51,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 08:31:51,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:51,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:31:51,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:51,762 INFO L130 PetriNetUnfolder]: 70/147 cut-off events. [2023-08-30 08:31:51,762 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 08:31:51,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 147 events. 70/147 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 527 event pairs, 20 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 321. Up to 68 conditions per place. [2023-08-30 08:31:51,765 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 34 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-08-30 08:31:51,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 42 transitions, 196 flow [2023-08-30 08:31:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:31:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:31:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 372 transitions. [2023-08-30 08:31:51,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2023-08-30 08:31:51,770 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 372 transitions. [2023-08-30 08:31:51,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 372 transitions. [2023-08-30 08:31:51,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:51,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 372 transitions. [2023-08-30 08:31:51,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 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 08:31:51,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 08:31:51,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 08:31:51,774 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 63 flow. Second operand 5 states and 372 transitions. [2023-08-30 08:31:51,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 42 transitions, 196 flow [2023-08-30 08:31:51,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:51,776 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 102 flow [2023-08-30 08:31:51,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-30 08:31:51,777 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 6 predicate places. [2023-08-30 08:31:51,777 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 102 flow [2023-08-30 08:31:51,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 08:31:51,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:51,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:51,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:31:51,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:51,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash -937414514, now seen corresponding path program 1 times [2023-08-30 08:31:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982297161] [2023-08-30 08:31:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:51,878 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 08:31:51,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:51,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982297161] [2023-08-30 08:31:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982297161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:31:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183696139] [2023-08-30 08:31:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:31:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:31:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:31:51,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:31:51,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 08:31:51,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:51,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:31:51,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:51,953 INFO L130 PetriNetUnfolder]: 71/153 cut-off events. [2023-08-30 08:31:51,953 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-30 08:31:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 153 events. 71/153 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 560 event pairs, 20 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 383. Up to 68 conditions per place. [2023-08-30 08:31:51,954 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 29 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2023-08-30 08:31:51,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 201 flow [2023-08-30 08:31:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:31:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:31:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-08-30 08:31:51,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-30 08:31:51,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-08-30 08:31:51,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-08-30 08:31:51,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:51,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-08-30 08:31:51,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 08:31:51,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 08:31:51,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 08:31:51,958 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 102 flow. Second operand 4 states and 297 transitions. [2023-08-30 08:31:51,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 201 flow [2023-08-30 08:31:51,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:51,960 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 123 flow [2023-08-30 08:31:51,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-30 08:31:51,965 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2023-08-30 08:31:51,966 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 123 flow [2023-08-30 08:31:51,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 08:31:51,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:51,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:31:51,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:51,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash -937413532, now seen corresponding path program 1 times [2023-08-30 08:31:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:51,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737789831] [2023-08-30 08:31:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:52,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737789831] [2023-08-30 08:31:52,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737789831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:52,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938883008] [2023-08-30 08:31:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:52,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:52,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:52,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 08:31:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:52,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:31:52,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938883008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:52,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 08:31:52,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424783311] [2023-08-30 08:31:52,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:52,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:31:52,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:52,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:31:52,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:31:52,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 162 [2023-08-30 08:31:52,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 08:31:52,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:52,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 162 [2023-08-30 08:31:52,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:52,259 INFO L130 PetriNetUnfolder]: 119/228 cut-off events. [2023-08-30 08:31:52,260 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 08:31:52,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 228 events. 119/228 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 728 event pairs, 4 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 626. Up to 52 conditions per place. [2023-08-30 08:31:52,262 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 43 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2023-08-30 08:31:52,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 371 flow [2023-08-30 08:31:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:31:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:31:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2023-08-30 08:31:52,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-30 08:31:52,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2023-08-30 08:31:52,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2023-08-30 08:31:52,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:52,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2023-08-30 08:31:52,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 08:31:52,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 08:31:52,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 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 08:31:52,267 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 123 flow. Second operand 7 states and 540 transitions. [2023-08-30 08:31:52,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 371 flow [2023-08-30 08:31:52,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 62 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:52,270 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 229 flow [2023-08-30 08:31:52,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-08-30 08:31:52,270 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 18 predicate places. [2023-08-30 08:31:52,271 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 229 flow [2023-08-30 08:31:52,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 08:31:52,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:52,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:52,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 08:31:52,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:52,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:52,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:52,476 INFO L85 PathProgramCache]: Analyzing trace with hash -937413558, now seen corresponding path program 1 times [2023-08-30 08:31:52,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:52,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145456110] [2023-08-30 08:31:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:52,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145456110] [2023-08-30 08:31:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145456110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:52,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:52,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:31:52,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495956976] [2023-08-30 08:31:52,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:52,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:31:52,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:52,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:31:52,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:31:52,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 162 [2023-08-30 08:31:52,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 08:31:52,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:52,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 162 [2023-08-30 08:31:52,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:52,543 INFO L130 PetriNetUnfolder]: 91/184 cut-off events. [2023-08-30 08:31:52,543 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2023-08-30 08:31:52,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 184 events. 91/184 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 568 event pairs, 0 based on Foata normal form. 33/217 useless extension candidates. Maximal degree in co-relation 576. Up to 178 conditions per place. [2023-08-30 08:31:52,544 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 25 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 08:31:52,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 215 flow [2023-08-30 08:31:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:31:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:31:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-08-30 08:31:52,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2023-08-30 08:31:52,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-08-30 08:31:52,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-08-30 08:31:52,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:52,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-08-30 08:31:52,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 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 08:31:52,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 08:31:52,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 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 08:31:52,547 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 229 flow. Second operand 3 states and 226 transitions. [2023-08-30 08:31:52,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 215 flow [2023-08-30 08:31:52,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 202 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:52,549 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 148 flow [2023-08-30 08:31:52,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-30 08:31:52,550 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2023-08-30 08:31:52,550 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 148 flow [2023-08-30 08:31:52,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 08:31:52,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:52,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:52,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 08:31:52,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:52,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -937414504, now seen corresponding path program 1 times [2023-08-30 08:31:52,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:52,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395380036] [2023-08-30 08:31:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:52,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:52,592 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 08:31:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:52,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395380036] [2023-08-30 08:31:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395380036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:31:52,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:31:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:31:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844122513] [2023-08-30 08:31:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:31:52,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:31:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:31:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:31:52,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 162 [2023-08-30 08:31:52,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 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 08:31:52,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:52,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 162 [2023-08-30 08:31:52,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:52,708 INFO L130 PetriNetUnfolder]: 101/202 cut-off events. [2023-08-30 08:31:52,708 INFO L131 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2023-08-30 08:31:52,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 202 events. 101/202 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 639 event pairs, 42 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 614. Up to 138 conditions per place. [2023-08-30 08:31:52,710 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 36 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-08-30 08:31:52,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 300 flow [2023-08-30 08:31:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:31:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:31:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 411 transitions. [2023-08-30 08:31:52,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228395061728395 [2023-08-30 08:31:52,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 411 transitions. [2023-08-30 08:31:52,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 411 transitions. [2023-08-30 08:31:52,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:52,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 411 transitions. [2023-08-30 08:31:52,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 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 08:31:52,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 08:31:52,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 08:31:52,717 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 148 flow. Second operand 6 states and 411 transitions. [2023-08-30 08:31:52,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 300 flow [2023-08-30 08:31:52,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:31:52,721 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 196 flow [2023-08-30 08:31:52,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-30 08:31:52,724 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 21 predicate places. [2023-08-30 08:31:52,724 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 196 flow [2023-08-30 08:31:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 5 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 08:31:52,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:52,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 08:31:52,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:52,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1004921999, now seen corresponding path program 1 times [2023-08-30 08:31:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:52,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855189869] [2023-08-30 08:31:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:52,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855189869] [2023-08-30 08:31:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855189869] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077918016] [2023-08-30 08:31:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:52,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:52,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:52,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:52,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 08:31:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:52,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 08:31:52,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:52,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077918016] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:52,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:52,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-30 08:31:52,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266818165] [2023-08-30 08:31:52,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:52,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:31:52,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:52,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:31:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:31:53,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:31:53,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 196 flow. Second operand has 14 states, 14 states have (on average 62.285714285714285) internal successors, (872), 14 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 08:31:53,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:53,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:31:53,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:53,382 INFO L130 PetriNetUnfolder]: 314/593 cut-off events. [2023-08-30 08:31:53,383 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2023-08-30 08:31:53,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 593 events. 314/593 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2687 event pairs, 24 based on Foata normal form. 39/632 useless extension candidates. Maximal degree in co-relation 2072. Up to 129 conditions per place. [2023-08-30 08:31:53,386 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 130 selfloop transitions, 67 changer transitions 0/198 dead transitions. [2023-08-30 08:31:53,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 198 transitions, 1339 flow [2023-08-30 08:31:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 08:31:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 08:31:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2456 transitions. [2023-08-30 08:31:53,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40974307640974306 [2023-08-30 08:31:53,391 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2456 transitions. [2023-08-30 08:31:53,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2456 transitions. [2023-08-30 08:31:53,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:53,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2456 transitions. [2023-08-30 08:31:53,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 66.37837837837837) internal successors, (2456), 37 states have internal predecessors, (2456), 0 states have call successors, (0), 0 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 08:31:53,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 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 08:31:53,402 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 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 08:31:53,402 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 196 flow. Second operand 37 states and 2456 transitions. [2023-08-30 08:31:53,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 198 transitions, 1339 flow [2023-08-30 08:31:53,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 198 transitions, 1307 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 08:31:53,408 INFO L231 Difference]: Finished difference. Result has 92 places, 97 transitions, 847 flow [2023-08-30 08:31:53,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=847, PETRI_PLACES=92, PETRI_TRANSITIONS=97} [2023-08-30 08:31:53,409 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 71 predicate places. [2023-08-30 08:31:53,409 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 97 transitions, 847 flow [2023-08-30 08:31:53,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 62.285714285714285) internal successors, (872), 14 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 08:31:53,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:53,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:53,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 08:31:53,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-30 08:31:53,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:53,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1088738400, now seen corresponding path program 1 times [2023-08-30 08:31:53,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061306810] [2023-08-30 08:31:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:53,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061306810] [2023-08-30 08:31:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061306810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399593463] [2023-08-30 08:31:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:53,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:53,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:53,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 08:31:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:53,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 08:31:53,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:53,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:53,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399593463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:53,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:53,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 08:31:53,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514987485] [2023-08-30 08:31:53,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:53,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 08:31:53,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 08:31:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 08:31:53,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 162 [2023-08-30 08:31:53,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 97 transitions, 847 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 08:31:53,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:53,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 162 [2023-08-30 08:31:53,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:53,991 INFO L130 PetriNetUnfolder]: 301/565 cut-off events. [2023-08-30 08:31:53,991 INFO L131 PetriNetUnfolder]: For 2018/2018 co-relation queries the response was YES. [2023-08-30 08:31:53,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2722 conditions, 565 events. 301/565 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2481 event pairs, 3 based on Foata normal form. 18/583 useless extension candidates. Maximal degree in co-relation 2679. Up to 369 conditions per place. [2023-08-30 08:31:53,995 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 85 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2023-08-30 08:31:53,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 1062 flow [2023-08-30 08:31:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:31:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:31:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 420 transitions. [2023-08-30 08:31:53,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2023-08-30 08:31:53,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 420 transitions. [2023-08-30 08:31:53,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 420 transitions. [2023-08-30 08:31:53,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:53,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 420 transitions. [2023-08-30 08:31:53,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 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 08:31:53,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 08:31:53,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 08:31:53,998 INFO L175 Difference]: Start difference. First operand has 92 places, 97 transitions, 847 flow. Second operand 6 states and 420 transitions. [2023-08-30 08:31:53,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 1062 flow [2023-08-30 08:31:54,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 102 transitions, 868 flow, removed 69 selfloop flow, removed 8 redundant places. [2023-08-30 08:31:54,011 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 648 flow [2023-08-30 08:31:54,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-30 08:31:54,012 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 63 predicate places. [2023-08-30 08:31:54,012 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 648 flow [2023-08-30 08:31:54,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 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 08:31:54,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:54,013 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:54,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 08:31:54,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:54,217 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:54,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1710303019, now seen corresponding path program 1 times [2023-08-30 08:31:54,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580208150] [2023-08-30 08:31:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:54,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:54,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580208150] [2023-08-30 08:31:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580208150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85712951] [2023-08-30 08:31:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:54,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:54,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:54,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:54,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 08:31:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:54,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 08:31:54,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:54,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85712951] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:54,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 08:31:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32041280] [2023-08-30 08:31:54,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 08:31:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 08:31:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-30 08:31:54,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:31:54,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 648 flow. Second operand has 11 states, 11 states have (on average 67.9090909090909) internal successors, (747), 11 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 08:31:54,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:54,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:31:54,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:54,659 INFO L130 PetriNetUnfolder]: 385/721 cut-off events. [2023-08-30 08:31:54,659 INFO L131 PetriNetUnfolder]: For 2768/2768 co-relation queries the response was YES. [2023-08-30 08:31:54,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 721 events. 385/721 cut-off events. For 2768/2768 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3255 event pairs, 67 based on Foata normal form. 18/739 useless extension candidates. Maximal degree in co-relation 3129. Up to 232 conditions per place. [2023-08-30 08:31:54,664 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 112 selfloop transitions, 56 changer transitions 0/169 dead transitions. [2023-08-30 08:31:54,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 169 transitions, 1516 flow [2023-08-30 08:31:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:31:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:31:54,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1375 transitions. [2023-08-30 08:31:54,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44671864847303444 [2023-08-30 08:31:54,667 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1375 transitions. [2023-08-30 08:31:54,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1375 transitions. [2023-08-30 08:31:54,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:54,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1375 transitions. [2023-08-30 08:31:54,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 72.36842105263158) internal successors, (1375), 19 states have internal predecessors, (1375), 0 states have call successors, (0), 0 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 08:31:54,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 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 08:31:54,673 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 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 08:31:54,673 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 648 flow. Second operand 19 states and 1375 transitions. [2023-08-30 08:31:54,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 169 transitions, 1516 flow [2023-08-30 08:31:54,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 169 transitions, 1477 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 08:31:54,695 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 957 flow [2023-08-30 08:31:54,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=957, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2023-08-30 08:31:54,695 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 86 predicate places. [2023-08-30 08:31:54,696 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 957 flow [2023-08-30 08:31:54,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.9090909090909) internal successors, (747), 11 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 08:31:54,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:54,696 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:54,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 08:31:54,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:54,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:54,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:54,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1693463629, now seen corresponding path program 1 times [2023-08-30 08:31:54,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:54,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151135691] [2023-08-30 08:31:54,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:54,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:54,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151135691] [2023-08-30 08:31:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151135691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258191217] [2023-08-30 08:31:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:54,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:54,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 08:31:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:54,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 08:31:54,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:55,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258191217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:55,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 08:31:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404457714] [2023-08-30 08:31:55,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:55,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 08:31:55,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 08:31:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-08-30 08:31:55,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:31:55,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 957 flow. Second operand has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 08:31:55,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:55,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:31:55,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:55,398 INFO L130 PetriNetUnfolder]: 664/1258 cut-off events. [2023-08-30 08:31:55,398 INFO L131 PetriNetUnfolder]: For 6249/6249 co-relation queries the response was YES. [2023-08-30 08:31:55,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5663 conditions, 1258 events. 664/1258 cut-off events. For 6249/6249 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6370 event pairs, 38 based on Foata normal form. 60/1318 useless extension candidates. Maximal degree in co-relation 5601. Up to 273 conditions per place. [2023-08-30 08:31:55,407 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 165 selfloop transitions, 72 changer transitions 0/238 dead transitions. [2023-08-30 08:31:55,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 238 transitions, 2359 flow [2023-08-30 08:31:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 08:31:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 08:31:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1407 transitions. [2023-08-30 08:31:55,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571150097465887 [2023-08-30 08:31:55,412 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1407 transitions. [2023-08-30 08:31:55,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1407 transitions. [2023-08-30 08:31:55,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:55,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1407 transitions. [2023-08-30 08:31:55,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 74.05263157894737) internal successors, (1407), 19 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 08:31:55,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 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 08:31:55,419 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 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 08:31:55,419 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 957 flow. Second operand 19 states and 1407 transitions. [2023-08-30 08:31:55,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 238 transitions, 2359 flow [2023-08-30 08:31:55,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 238 transitions, 2258 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-08-30 08:31:55,446 INFO L231 Difference]: Finished difference. Result has 126 places, 137 transitions, 1358 flow [2023-08-30 08:31:55,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1358, PETRI_PLACES=126, PETRI_TRANSITIONS=137} [2023-08-30 08:31:55,447 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 105 predicate places. [2023-08-30 08:31:55,447 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 137 transitions, 1358 flow [2023-08-30 08:31:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 08:31:55,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:55,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:55,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 08:31:55,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 08:31:55,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:55,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1694390582, now seen corresponding path program 1 times [2023-08-30 08:31:55,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:55,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647963161] [2023-08-30 08:31:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647963161] [2023-08-30 08:31:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647963161] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851578790] [2023-08-30 08:31:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:55,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:55,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:55,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 08:31:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:55,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:31:55,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:55,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851578790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:55,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 08:31:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277334180] [2023-08-30 08:31:55,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:55,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 08:31:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:55,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 08:31:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 08:31:56,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:31:56,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 1358 flow. Second operand has 15 states, 15 states have (on average 62.46666666666667) internal successors, (937), 15 states have internal predecessors, (937), 0 states have call successors, (0), 0 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 08:31:56,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:56,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:31:56,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:57,051 INFO L130 PetriNetUnfolder]: 1189/2232 cut-off events. [2023-08-30 08:31:57,052 INFO L131 PetriNetUnfolder]: For 12206/12206 co-relation queries the response was YES. [2023-08-30 08:31:57,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10982 conditions, 2232 events. 1189/2232 cut-off events. For 12206/12206 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12800 event pairs, 86 based on Foata normal form. 48/2280 useless extension candidates. Maximal degree in co-relation 10917. Up to 498 conditions per place. [2023-08-30 08:31:57,068 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 288 selfloop transitions, 221 changer transitions 0/510 dead transitions. [2023-08-30 08:31:57,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 510 transitions, 4811 flow [2023-08-30 08:31:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-08-30 08:31:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-08-30 08:31:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5324 transitions. [2023-08-30 08:31:57,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108024691358025 [2023-08-30 08:31:57,075 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5324 transitions. [2023-08-30 08:31:57,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5324 transitions. [2023-08-30 08:31:57,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:57,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5324 transitions. [2023-08-30 08:31:57,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 66.55) internal successors, (5324), 80 states have internal predecessors, (5324), 0 states have call successors, (0), 0 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 08:31:57,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 162.0) internal successors, (13122), 81 states have internal predecessors, (13122), 0 states have call successors, (0), 0 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 08:31:57,102 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 162.0) internal successors, (13122), 81 states have internal predecessors, (13122), 0 states have call successors, (0), 0 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 08:31:57,103 INFO L175 Difference]: Start difference. First operand has 126 places, 137 transitions, 1358 flow. Second operand 80 states and 5324 transitions. [2023-08-30 08:31:57,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 510 transitions, 4811 flow [2023-08-30 08:31:57,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 510 transitions, 4382 flow, removed 169 selfloop flow, removed 9 redundant places. [2023-08-30 08:31:57,165 INFO L231 Difference]: Finished difference. Result has 220 places, 283 transitions, 2899 flow [2023-08-30 08:31:57,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=2899, PETRI_PLACES=220, PETRI_TRANSITIONS=283} [2023-08-30 08:31:57,166 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 199 predicate places. [2023-08-30 08:31:57,166 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 283 transitions, 2899 flow [2023-08-30 08:31:57,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.46666666666667) internal successors, (937), 15 states have internal predecessors, (937), 0 states have call successors, (0), 0 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 08:31:57,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:57,166 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:57,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 08:31:57,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:57,376 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:57,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1710303028, now seen corresponding path program 1 times [2023-08-30 08:31:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:57,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572146801] [2023-08-30 08:31:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:57,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:57,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572146801] [2023-08-30 08:31:57,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572146801] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:57,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372538052] [2023-08-30 08:31:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:57,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:57,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:57,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:57,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 08:31:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:57,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:31:57,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:57,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:57,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372538052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:57,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:57,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 08:31:57,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204017355] [2023-08-30 08:31:57,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 08:31:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 08:31:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-08-30 08:31:57,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:31:57,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 283 transitions, 2899 flow. Second operand has 17 states, 17 states have (on average 62.588235294117645) internal successors, (1064), 17 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 08:31:57,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:57,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:31:57,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:31:58,454 INFO L130 PetriNetUnfolder]: 1392/2617 cut-off events. [2023-08-30 08:31:58,454 INFO L131 PetriNetUnfolder]: For 37057/37057 co-relation queries the response was YES. [2023-08-30 08:31:58,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15241 conditions, 2617 events. 1392/2617 cut-off events. For 37057/37057 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15526 event pairs, 342 based on Foata normal form. 18/2635 useless extension candidates. Maximal degree in co-relation 15142. Up to 1236 conditions per place. [2023-08-30 08:31:58,478 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 289 selfloop transitions, 182 changer transitions 0/472 dead transitions. [2023-08-30 08:31:58,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 472 transitions, 5524 flow [2023-08-30 08:31:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-30 08:31:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-30 08:31:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2991 transitions. [2023-08-30 08:31:58,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102880658436214 [2023-08-30 08:31:58,483 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2991 transitions. [2023-08-30 08:31:58,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2991 transitions. [2023-08-30 08:31:58,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:31:58,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2991 transitions. [2023-08-30 08:31:58,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 66.46666666666667) internal successors, (2991), 45 states have internal predecessors, (2991), 0 states have call successors, (0), 0 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 08:31:58,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 162.0) internal successors, (7452), 46 states have internal predecessors, (7452), 0 states have call successors, (0), 0 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 08:31:58,505 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 162.0) internal successors, (7452), 46 states have internal predecessors, (7452), 0 states have call successors, (0), 0 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 08:31:58,505 INFO L175 Difference]: Start difference. First operand has 220 places, 283 transitions, 2899 flow. Second operand 45 states and 2991 transitions. [2023-08-30 08:31:58,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 472 transitions, 5524 flow [2023-08-30 08:31:58,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 472 transitions, 5214 flow, removed 85 selfloop flow, removed 14 redundant places. [2023-08-30 08:31:58,669 INFO L231 Difference]: Finished difference. Result has 257 places, 331 transitions, 3512 flow [2023-08-30 08:31:58,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3512, PETRI_PLACES=257, PETRI_TRANSITIONS=331} [2023-08-30 08:31:58,671 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 236 predicate places. [2023-08-30 08:31:58,671 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 331 transitions, 3512 flow [2023-08-30 08:31:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.588235294117645) internal successors, (1064), 17 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 08:31:58,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:31:58,671 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:31:58,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 08:31:58,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:58,876 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:31:58,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:31:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1479769569, now seen corresponding path program 1 times [2023-08-30 08:31:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:31:58,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453939720] [2023-08-30 08:31:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:31:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:31:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453939720] [2023-08-30 08:31:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453939720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:31:58,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342417546] [2023-08-30 08:31:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:31:58,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:31:58,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:31:58,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:31:58,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 08:31:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:31:59,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:31:59,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:31:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:59,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:31:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:31:59,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342417546] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:31:59,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:31:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-30 08:31:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348913430] [2023-08-30 08:31:59,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:31:59,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 08:31:59,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:31:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 08:31:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2023-08-30 08:31:59,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:31:59,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 331 transitions, 3512 flow. Second operand has 23 states, 23 states have (on average 62.30434782608695) internal successors, (1433), 23 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 08:31:59,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:31:59,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:31:59,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:00,981 INFO L130 PetriNetUnfolder]: 2104/3953 cut-off events. [2023-08-30 08:32:00,981 INFO L131 PetriNetUnfolder]: For 64593/64593 co-relation queries the response was YES. [2023-08-30 08:32:01,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23414 conditions, 3953 events. 2104/3953 cut-off events. For 64593/64593 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25124 event pairs, 270 based on Foata normal form. 39/3992 useless extension candidates. Maximal degree in co-relation 23313. Up to 1227 conditions per place. [2023-08-30 08:32:01,024 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 450 selfloop transitions, 308 changer transitions 0/759 dead transitions. [2023-08-30 08:32:01,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 759 transitions, 8650 flow [2023-08-30 08:32:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-08-30 08:32:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-08-30 08:32:01,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5954 transitions. [2023-08-30 08:32:01,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083676268861454 [2023-08-30 08:32:01,036 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5954 transitions. [2023-08-30 08:32:01,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5954 transitions. [2023-08-30 08:32:01,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:01,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5954 transitions. [2023-08-30 08:32:01,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 66.15555555555555) internal successors, (5954), 90 states have internal predecessors, (5954), 0 states have call successors, (0), 0 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 08:32:01,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 162.0) internal successors, (14742), 91 states have internal predecessors, (14742), 0 states have call successors, (0), 0 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 08:32:01,062 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 162.0) internal successors, (14742), 91 states have internal predecessors, (14742), 0 states have call successors, (0), 0 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 08:32:01,062 INFO L175 Difference]: Start difference. First operand has 257 places, 331 transitions, 3512 flow. Second operand 90 states and 5954 transitions. [2023-08-30 08:32:01,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 759 transitions, 8650 flow [2023-08-30 08:32:01,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 759 transitions, 8408 flow, removed 33 selfloop flow, removed 14 redundant places. [2023-08-30 08:32:01,391 INFO L231 Difference]: Finished difference. Result has 347 places, 459 transitions, 5411 flow [2023-08-30 08:32:01,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=5411, PETRI_PLACES=347, PETRI_TRANSITIONS=459} [2023-08-30 08:32:01,391 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 326 predicate places. [2023-08-30 08:32:01,392 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 459 transitions, 5411 flow [2023-08-30 08:32:01,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 62.30434782608695) internal successors, (1433), 23 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 08:32:01,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:01,392 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:01,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 08:32:01,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 08:32:01,593 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:32:01,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash 374084554, now seen corresponding path program 1 times [2023-08-30 08:32:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537157715] [2023-08-30 08:32:01,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:01,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537157715] [2023-08-30 08:32:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537157715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:32:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065405188] [2023-08-30 08:32:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:01,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:32:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:32:01,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:32:01,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 08:32:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:01,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:32:01,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:32:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:01,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:32:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065405188] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:32:01,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:32:01,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 08:32:01,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889838559] [2023-08-30 08:32:01,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:32:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 08:32:01,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:01,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 08:32:01,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-08-30 08:32:01,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:32:01,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 459 transitions, 5411 flow. Second operand has 15 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 08:32:01,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:01,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:32:01,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:03,505 INFO L130 PetriNetUnfolder]: 2511/4713 cut-off events. [2023-08-30 08:32:03,505 INFO L131 PetriNetUnfolder]: For 140394/140394 co-relation queries the response was YES. [2023-08-30 08:32:03,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30314 conditions, 4713 events. 2511/4713 cut-off events. For 140394/140394 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 31170 event pairs, 124 based on Foata normal form. 84/4794 useless extension candidates. Maximal degree in co-relation 30181. Up to 1050 conditions per place. [2023-08-30 08:32:03,559 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 384 selfloop transitions, 470 changer transitions 0/855 dead transitions. [2023-08-30 08:32:03,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 855 transitions, 12176 flow [2023-08-30 08:32:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-08-30 08:32:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-08-30 08:32:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5067 transitions. [2023-08-30 08:32:03,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41703703703703704 [2023-08-30 08:32:03,565 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 5067 transitions. [2023-08-30 08:32:03,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 5067 transitions. [2023-08-30 08:32:03,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:03,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 5067 transitions. [2023-08-30 08:32:03,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 67.56) internal successors, (5067), 75 states have internal predecessors, (5067), 0 states have call successors, (0), 0 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 08:32:03,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 162.0) internal successors, (12312), 76 states have internal predecessors, (12312), 0 states have call successors, (0), 0 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 08:32:03,582 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 162.0) internal successors, (12312), 76 states have internal predecessors, (12312), 0 states have call successors, (0), 0 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 08:32:03,582 INFO L175 Difference]: Start difference. First operand has 347 places, 459 transitions, 5411 flow. Second operand 75 states and 5067 transitions. [2023-08-30 08:32:03,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 855 transitions, 12176 flow [2023-08-30 08:32:04,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 855 transitions, 11751 flow, removed 128 selfloop flow, removed 22 redundant places. [2023-08-30 08:32:04,144 INFO L231 Difference]: Finished difference. Result has 421 places, 636 transitions, 8256 flow [2023-08-30 08:32:04,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=5010, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=8256, PETRI_PLACES=421, PETRI_TRANSITIONS=636} [2023-08-30 08:32:04,145 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 400 predicate places. [2023-08-30 08:32:04,145 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 636 transitions, 8256 flow [2023-08-30 08:32:04,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 62.733333333333334) internal successors, (941), 15 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 08:32:04,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:04,145 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:04,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 08:32:04,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 08:32:04,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:32:04,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1288297461, now seen corresponding path program 2 times [2023-08-30 08:32:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193296838] [2023-08-30 08:32:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:04,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193296838] [2023-08-30 08:32:04,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193296838] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:32:04,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485753432] [2023-08-30 08:32:04,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:32:04,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:32:04,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:32:04,441 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:32:04,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 08:32:04,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:32:04,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:32:04,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 08:32:04,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:32:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:04,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:32:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:04,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485753432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:32:04,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:32:04,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 08:32:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601304506] [2023-08-30 08:32:04,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:32:04,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 08:32:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 08:32:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-08-30 08:32:04,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:32:04,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 636 transitions, 8256 flow. Second operand has 19 states, 19 states have (on average 62.473684210526315) internal successors, (1187), 19 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 08:32:04,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:04,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:32:04,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:08,027 INFO L130 PetriNetUnfolder]: 3101/5801 cut-off events. [2023-08-30 08:32:08,027 INFO L131 PetriNetUnfolder]: For 208471/208471 co-relation queries the response was YES. [2023-08-30 08:32:08,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41653 conditions, 5801 events. 3101/5801 cut-off events. For 208471/208471 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 39786 event pairs, 86 based on Foata normal form. 48/5846 useless extension candidates. Maximal degree in co-relation 41534. Up to 1296 conditions per place. [2023-08-30 08:32:08,088 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 561 selfloop transitions, 632 changer transitions 0/1194 dead transitions. [2023-08-30 08:32:08,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 1194 transitions, 17102 flow [2023-08-30 08:32:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-08-30 08:32:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-08-30 08:32:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 9275 transitions. [2023-08-30 08:32:08,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118927080557776 [2023-08-30 08:32:08,096 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 9275 transitions. [2023-08-30 08:32:08,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 9275 transitions. [2023-08-30 08:32:08,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:08,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 9275 transitions. [2023-08-30 08:32:08,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 66.72661870503597) internal successors, (9275), 139 states have internal predecessors, (9275), 0 states have call successors, (0), 0 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 08:32:08,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 162.0) internal successors, (22680), 140 states have internal predecessors, (22680), 0 states have call successors, (0), 0 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 08:32:08,124 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 162.0) internal successors, (22680), 140 states have internal predecessors, (22680), 0 states have call successors, (0), 0 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 08:32:08,124 INFO L175 Difference]: Start difference. First operand has 421 places, 636 transitions, 8256 flow. Second operand 139 states and 9275 transitions. [2023-08-30 08:32:08,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 1194 transitions, 17102 flow [2023-08-30 08:32:09,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 1194 transitions, 16084 flow, removed 261 selfloop flow, removed 24 redundant places. [2023-08-30 08:32:09,235 INFO L231 Difference]: Finished difference. Result has 554 places, 837 transitions, 11809 flow [2023-08-30 08:32:09,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=7476, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=453, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=139, PETRI_FLOW=11809, PETRI_PLACES=554, PETRI_TRANSITIONS=837} [2023-08-30 08:32:09,236 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 533 predicate places. [2023-08-30 08:32:09,236 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 837 transitions, 11809 flow [2023-08-30 08:32:09,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 62.473684210526315) internal successors, (1187), 19 states have internal predecessors, (1187), 0 states have call successors, (0), 0 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 08:32:09,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:09,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:09,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 08:32:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 08:32:09,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:32:09,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1177989345, now seen corresponding path program 1 times [2023-08-30 08:32:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052028428] [2023-08-30 08:32:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:09,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052028428] [2023-08-30 08:32:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052028428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:32:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452432512] [2023-08-30 08:32:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:09,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:32:09,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:32:09,500 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:32:09,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 08:32:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:09,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 08:32:09,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:32:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:09,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:32:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:09,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452432512] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:32:09,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:32:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-08-30 08:32:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214372249] [2023-08-30 08:32:09,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:32:09,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 08:32:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:09,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 08:32:09,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-08-30 08:32:09,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:32:09,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 837 transitions, 11809 flow. Second operand has 17 states, 17 states have (on average 62.64705882352941) internal successors, (1065), 17 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 08:32:09,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:09,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:32:09,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:12,799 INFO L130 PetriNetUnfolder]: 3656/6857 cut-off events. [2023-08-30 08:32:12,800 INFO L131 PetriNetUnfolder]: For 378565/378565 co-relation queries the response was YES. [2023-08-30 08:32:12,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51439 conditions, 6857 events. 3656/6857 cut-off events. For 378565/378565 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 48931 event pairs, 468 based on Foata normal form. 75/6929 useless extension candidates. Maximal degree in co-relation 51254. Up to 1854 conditions per place. [2023-08-30 08:32:12,897 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 631 selfloop transitions, 689 changer transitions 0/1321 dead transitions. [2023-08-30 08:32:12,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 1321 transitions, 21336 flow [2023-08-30 08:32:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-08-30 08:32:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2023-08-30 08:32:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 7892 transitions. [2023-08-30 08:32:12,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128478761247123 [2023-08-30 08:32:12,905 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 7892 transitions. [2023-08-30 08:32:12,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 7892 transitions. [2023-08-30 08:32:12,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:12,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 7892 transitions. [2023-08-30 08:32:12,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 66.88135593220339) internal successors, (7892), 118 states have internal predecessors, (7892), 0 states have call successors, (0), 0 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 08:32:12,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 162.0) internal successors, (19278), 119 states have internal predecessors, (19278), 0 states have call successors, (0), 0 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 08:32:12,934 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 162.0) internal successors, (19278), 119 states have internal predecessors, (19278), 0 states have call successors, (0), 0 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 08:32:12,934 INFO L175 Difference]: Start difference. First operand has 554 places, 837 transitions, 11809 flow. Second operand 118 states and 7892 transitions. [2023-08-30 08:32:12,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 1321 transitions, 21336 flow [2023-08-30 08:32:15,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 1321 transitions, 20269 flow, removed 383 selfloop flow, removed 31 redundant places. [2023-08-30 08:32:15,163 INFO L231 Difference]: Finished difference. Result has 665 places, 991 transitions, 14718 flow [2023-08-30 08:32:15,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=10828, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=14718, PETRI_PLACES=665, PETRI_TRANSITIONS=991} [2023-08-30 08:32:15,164 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 644 predicate places. [2023-08-30 08:32:15,164 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 991 transitions, 14718 flow [2023-08-30 08:32:15,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.64705882352941) internal successors, (1065), 17 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 08:32:15,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:15,165 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:15,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 08:32:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 08:32:15,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:32:15,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2137571656, now seen corresponding path program 2 times [2023-08-30 08:32:15,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:15,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764515684] [2023-08-30 08:32:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:15,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:15,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:15,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764515684] [2023-08-30 08:32:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764515684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:32:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99965736] [2023-08-30 08:32:15,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:32:15,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:32:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:32:15,450 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:32:15,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 08:32:15,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:32:15,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:32:15,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:32:15,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:32:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:15,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:32:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99965736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:32:15,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:32:15,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-30 08:32:15,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153071096] [2023-08-30 08:32:15,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:32:15,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:32:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:32:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:32:15,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:32:15,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 991 transitions, 14718 flow. Second operand has 21 states, 21 states have (on average 62.42857142857143) internal successors, (1311), 21 states have internal predecessors, (1311), 0 states have call successors, (0), 0 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 08:32:15,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:15,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:32:15,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:20,670 INFO L130 PetriNetUnfolder]: 4549/8520 cut-off events. [2023-08-30 08:32:20,671 INFO L131 PetriNetUnfolder]: For 611352/611352 co-relation queries the response was YES. [2023-08-30 08:32:20,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66320 conditions, 8520 events. 4549/8520 cut-off events. For 611352/611352 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 63077 event pairs, 316 based on Foata normal form. 69/8589 useless extension candidates. Maximal degree in co-relation 66123. Up to 1908 conditions per place. [2023-08-30 08:32:20,793 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 802 selfloop transitions, 930 changer transitions 0/1733 dead transitions. [2023-08-30 08:32:20,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 851 places, 1733 transitions, 27216 flow [2023-08-30 08:32:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2023-08-30 08:32:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2023-08-30 08:32:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 12438 transitions. [2023-08-30 08:32:20,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41057635175282237 [2023-08-30 08:32:20,805 INFO L72 ComplementDD]: Start complementDD. Operand 187 states and 12438 transitions. [2023-08-30 08:32:20,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 12438 transitions. [2023-08-30 08:32:20,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:20,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 187 states and 12438 transitions. [2023-08-30 08:32:20,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 188 states, 187 states have (on average 66.51336898395722) internal successors, (12438), 187 states have internal predecessors, (12438), 0 states have call successors, (0), 0 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 08:32:20,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 188 states, 188 states have (on average 162.0) internal successors, (30456), 188 states have internal predecessors, (30456), 0 states have call successors, (0), 0 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 08:32:20,842 INFO L81 ComplementDD]: Finished complementDD. Result has 188 states, 188 states have (on average 162.0) internal successors, (30456), 188 states have internal predecessors, (30456), 0 states have call successors, (0), 0 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 08:32:20,842 INFO L175 Difference]: Start difference. First operand has 665 places, 991 transitions, 14718 flow. Second operand 187 states and 12438 transitions. [2023-08-30 08:32:20,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 851 places, 1733 transitions, 27216 flow [2023-08-30 08:32:24,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 817 places, 1733 transitions, 26060 flow, removed 348 selfloop flow, removed 34 redundant places. [2023-08-30 08:32:24,685 INFO L231 Difference]: Finished difference. Result has 845 places, 1229 transitions, 19594 flow [2023-08-30 08:32:24,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=13813, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=716, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=187, PETRI_FLOW=19594, PETRI_PLACES=845, PETRI_TRANSITIONS=1229} [2023-08-30 08:32:24,686 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 824 predicate places. [2023-08-30 08:32:24,686 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1229 transitions, 19594 flow [2023-08-30 08:32:24,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 62.42857142857143) internal successors, (1311), 21 states have internal predecessors, (1311), 0 states have call successors, (0), 0 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 08:32:24,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:24,687 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:32:24,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 08:32:24,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 08:32:24,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:32:24,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1379753549, now seen corresponding path program 2 times [2023-08-30 08:32:24,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:24,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343449002] [2023-08-30 08:32:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:24,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:25,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:25,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343449002] [2023-08-30 08:32:25,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343449002] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:32:25,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607826516] [2023-08-30 08:32:25,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:32:25,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:32:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:32:25,016 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:32:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 08:32:25,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:32:25,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:32:25,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 08:32:25,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:32:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:25,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:32:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:25,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607826516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:32:25,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:32:25,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-30 08:32:25,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550752545] [2023-08-30 08:32:25,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:32:25,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 08:32:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 08:32:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992 [2023-08-30 08:32:25,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:32:25,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1229 transitions, 19594 flow. Second operand has 32 states, 32 states have (on average 62.3125) internal successors, (1994), 32 states have internal predecessors, (1994), 0 states have call successors, (0), 0 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 08:32:25,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:25,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:32:25,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:31,358 INFO L130 PetriNetUnfolder]: 5332/9985 cut-off events. [2023-08-30 08:32:31,358 INFO L131 PetriNetUnfolder]: For 942249/942249 co-relation queries the response was YES. [2023-08-30 08:32:31,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81461 conditions, 9985 events. 5332/9985 cut-off events. For 942249/942249 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 75189 event pairs, 1036 based on Foata normal form. 63/10048 useless extension candidates. Maximal degree in co-relation 81222. Up to 4186 conditions per place. [2023-08-30 08:32:31,597 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 1277 selfloop transitions, 782 changer transitions 0/2060 dead transitions. [2023-08-30 08:32:31,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1019 places, 2060 transitions, 34362 flow [2023-08-30 08:32:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2023-08-30 08:32:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2023-08-30 08:32:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 11561 transitions. [2023-08-30 08:32:31,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077954144620811 [2023-08-30 08:32:31,607 INFO L72 ComplementDD]: Start complementDD. Operand 175 states and 11561 transitions. [2023-08-30 08:32:31,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 11561 transitions. [2023-08-30 08:32:31,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:31,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 175 states and 11561 transitions. [2023-08-30 08:32:31,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 176 states, 175 states have (on average 66.06285714285714) internal successors, (11561), 175 states have internal predecessors, (11561), 0 states have call successors, (0), 0 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 08:32:31,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 176 states, 176 states have (on average 162.0) internal successors, (28512), 176 states have internal predecessors, (28512), 0 states have call successors, (0), 0 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 08:32:31,636 INFO L81 ComplementDD]: Finished complementDD. Result has 176 states, 176 states have (on average 162.0) internal successors, (28512), 176 states have internal predecessors, (28512), 0 states have call successors, (0), 0 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 08:32:31,636 INFO L175 Difference]: Start difference. First operand has 845 places, 1229 transitions, 19594 flow. Second operand 175 states and 11561 transitions. [2023-08-30 08:32:31,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1019 places, 2060 transitions, 34362 flow [2023-08-30 08:32:38,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 2060 transitions, 32040 flow, removed 406 selfloop flow, removed 68 redundant places. [2023-08-30 08:32:38,188 INFO L231 Difference]: Finished difference. Result has 975 places, 1417 transitions, 22454 flow [2023-08-30 08:32:38,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=17764, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=175, PETRI_FLOW=22454, PETRI_PLACES=975, PETRI_TRANSITIONS=1417} [2023-08-30 08:32:38,190 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 954 predicate places. [2023-08-30 08:32:38,190 INFO L495 AbstractCegarLoop]: Abstraction has has 975 places, 1417 transitions, 22454 flow [2023-08-30 08:32:38,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 62.3125) internal successors, (1994), 32 states have internal predecessors, (1994), 0 states have call successors, (0), 0 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 08:32:38,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:32:38,190 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2023-08-30 08:32:38,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 08:32:38,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 08:32:38,393 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:32:38,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:32:38,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1874204034, now seen corresponding path program 2 times [2023-08-30 08:32:38,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:32:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592815762] [2023-08-30 08:32:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:32:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:32:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:32:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:32:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592815762] [2023-08-30 08:32:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592815762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:32:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689257469] [2023-08-30 08:32:38,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:32:38,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:32:38,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:32:38,469 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:32:38,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 08:32:38,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:32:38,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:32:38,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:32:38,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:32:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:38,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:32:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:32:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689257469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:32:38,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:32:38,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-08-30 08:32:38,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595990352] [2023-08-30 08:32:38,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:32:38,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 08:32:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:32:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 08:32:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-08-30 08:32:38,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 162 [2023-08-30 08:32:38,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 975 places, 1417 transitions, 22454 flow. Second operand has 17 states, 17 states have (on average 70.0) internal successors, (1190), 17 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 08:32:38,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:32:38,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 162 [2023-08-30 08:32:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:32:45,258 INFO L130 PetriNetUnfolder]: 9349/17417 cut-off events. [2023-08-30 08:32:45,258 INFO L131 PetriNetUnfolder]: For 1392093/1392093 co-relation queries the response was YES. [2023-08-30 08:32:45,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143902 conditions, 17417 events. 9349/17417 cut-off events. For 1392093/1392093 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 130287 event pairs, 328 based on Foata normal form. 1977/19394 useless extension candidates. Maximal degree in co-relation 143526. Up to 4029 conditions per place. [2023-08-30 08:32:45,547 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 1784 selfloop transitions, 308 changer transitions 0/2093 dead transitions. [2023-08-30 08:32:45,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 2093 transitions, 41104 flow [2023-08-30 08:32:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 08:32:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 08:32:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1229 transitions. [2023-08-30 08:32:45,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47415123456790126 [2023-08-30 08:32:45,550 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1229 transitions. [2023-08-30 08:32:45,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1229 transitions. [2023-08-30 08:32:45,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:32:45,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1229 transitions. [2023-08-30 08:32:45,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.8125) internal successors, (1229), 16 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 08:32:45,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 162.0) internal successors, (2754), 17 states have internal predecessors, (2754), 0 states have call successors, (0), 0 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 08:32:45,553 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 162.0) internal successors, (2754), 17 states have internal predecessors, (2754), 0 states have call successors, (0), 0 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 08:32:45,553 INFO L175 Difference]: Start difference. First operand has 975 places, 1417 transitions, 22454 flow. Second operand 16 states and 1229 transitions. [2023-08-30 08:32:45,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 990 places, 2093 transitions, 41104 flow [2023-08-30 08:33:00,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 910 places, 2093 transitions, 39321 flow, removed 422 selfloop flow, removed 80 redundant places. [2023-08-30 08:33:00,198 INFO L231 Difference]: Finished difference. Result has 919 places, 1432 transitions, 21824 flow [2023-08-30 08:33:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=20972, PETRI_DIFFERENCE_MINUEND_PLACES=895, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=21824, PETRI_PLACES=919, PETRI_TRANSITIONS=1432} [2023-08-30 08:33:00,200 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 898 predicate places. [2023-08-30 08:33:00,200 INFO L495 AbstractCegarLoop]: Abstraction has has 919 places, 1432 transitions, 21824 flow [2023-08-30 08:33:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 70.0) internal successors, (1190), 17 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 08:33:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:33:00,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 08:33:00,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 08:33:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:33:00,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:33:00,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:33:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash 674504504, now seen corresponding path program 3 times [2023-08-30 08:33:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:33:00,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842717469] [2023-08-30 08:33:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:33:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:33:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:33:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:33:00,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:33:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842717469] [2023-08-30 08:33:00,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842717469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:33:00,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654132752] [2023-08-30 08:33:00,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:33:00,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:33:00,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:33:00,505 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:33:00,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 08:33:00,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 08:33:00,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:33:00,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:33:00,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:33:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:33:00,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:33:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:33:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654132752] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:33:00,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:33:00,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-30 08:33:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450187275] [2023-08-30 08:33:00,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:33:00,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:33:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:33:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:33:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:33:00,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:33:00,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 919 places, 1432 transitions, 21824 flow. Second operand has 21 states, 21 states have (on average 62.61904761904762) internal successors, (1315), 21 states have internal predecessors, (1315), 0 states have call successors, (0), 0 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 08:33:00,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:33:00,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:33:00,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:33:12,322 INFO L130 PetriNetUnfolder]: 10775/19997 cut-off events. [2023-08-30 08:33:12,322 INFO L131 PetriNetUnfolder]: For 2130041/2130041 co-relation queries the response was YES. [2023-08-30 08:33:12,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173005 conditions, 19997 events. 10775/19997 cut-off events. For 2130041/2130041 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 152865 event pairs, 938 based on Foata normal form. 138/20132 useless extension candidates. Maximal degree in co-relation 172721. Up to 4784 conditions per place. [2023-08-30 08:33:12,663 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 864 selfloop transitions, 1402 changer transitions 0/2267 dead transitions. [2023-08-30 08:33:12,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1139 places, 2267 transitions, 42028 flow [2023-08-30 08:33:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2023-08-30 08:33:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2023-08-30 08:33:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 14829 transitions. [2023-08-30 08:33:12,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141947377241495 [2023-08-30 08:33:12,673 INFO L72 ComplementDD]: Start complementDD. Operand 221 states and 14829 transitions. [2023-08-30 08:33:12,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 14829 transitions. [2023-08-30 08:33:12,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:33:12,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 221 states and 14829 transitions. [2023-08-30 08:33:12,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 222 states, 221 states have (on average 67.09954751131222) internal successors, (14829), 221 states have internal predecessors, (14829), 0 states have call successors, (0), 0 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 08:33:12,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 222 states, 222 states have (on average 162.0) internal successors, (35964), 222 states have internal predecessors, (35964), 0 states have call successors, (0), 0 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 08:33:12,710 INFO L81 ComplementDD]: Finished complementDD. Result has 222 states, 222 states have (on average 162.0) internal successors, (35964), 222 states have internal predecessors, (35964), 0 states have call successors, (0), 0 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 08:33:12,711 INFO L175 Difference]: Start difference. First operand has 919 places, 1432 transitions, 21824 flow. Second operand 221 states and 14829 transitions. [2023-08-30 08:33:12,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1139 places, 2267 transitions, 42028 flow [2023-08-30 08:33:28,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1133 places, 2267 transitions, 41234 flow, removed 63 selfloop flow, removed 6 redundant places. [2023-08-30 08:33:28,684 INFO L231 Difference]: Finished difference. Result has 1174 places, 1697 transitions, 28879 flow [2023-08-30 08:33:28,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=21247, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=221, PETRI_FLOW=28879, PETRI_PLACES=1174, PETRI_TRANSITIONS=1697} [2023-08-30 08:33:28,686 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1153 predicate places. [2023-08-30 08:33:28,686 INFO L495 AbstractCegarLoop]: Abstraction has has 1174 places, 1697 transitions, 28879 flow [2023-08-30 08:33:28,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 62.61904761904762) internal successors, (1315), 21 states have internal predecessors, (1315), 0 states have call successors, (0), 0 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 08:33:28,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:33:28,686 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1] [2023-08-30 08:33:28,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 08:33:28,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:33:28,891 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:33:28,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:33:28,891 INFO L85 PathProgramCache]: Analyzing trace with hash 155130521, now seen corresponding path program 3 times [2023-08-30 08:33:28,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:33:28,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721812140] [2023-08-30 08:33:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:33:28,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:33:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:33:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:33:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:33:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721812140] [2023-08-30 08:33:28,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721812140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:33:28,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805192130] [2023-08-30 08:33:28,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:33:28,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:33:28,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:33:28,996 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:33:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 08:33:29,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 08:33:29,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:33:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 08:33:29,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:33:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 08:33:29,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:33:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-30 08:33:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805192130] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:33:29,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:33:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 22 [2023-08-30 08:33:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699860181] [2023-08-30 08:33:29,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:33:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 08:33:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:33:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 08:33:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-08-30 08:33:29,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 162 [2023-08-30 08:33:29,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1174 places, 1697 transitions, 28879 flow. Second operand has 22 states, 22 states have (on average 57.68181818181818) internal successors, (1269), 22 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 08:33:29,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:33:29,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 162 [2023-08-30 08:33:29,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:33:46,462 INFO L130 PetriNetUnfolder]: 11268/21215 cut-off events. [2023-08-30 08:33:46,462 INFO L131 PetriNetUnfolder]: For 2542640/2542640 co-relation queries the response was YES. [2023-08-30 08:33:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200098 conditions, 21215 events. 11268/21215 cut-off events. For 2542640/2542640 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 163320 event pairs, 94 based on Foata normal form. 453/21668 useless extension candidates. Maximal degree in co-relation 199828. Up to 4962 conditions per place. [2023-08-30 08:33:47,025 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 643 selfloop transitions, 1606 changer transitions 0/2250 dead transitions. [2023-08-30 08:33:47,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1350 places, 2250 transitions, 40427 flow [2023-08-30 08:33:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-08-30 08:33:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2023-08-30 08:33:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 10643 transitions. [2023-08-30 08:33:47,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37117249075817815 [2023-08-30 08:33:47,034 INFO L72 ComplementDD]: Start complementDD. Operand 177 states and 10643 transitions. [2023-08-30 08:33:47,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 10643 transitions. [2023-08-30 08:33:47,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:33:47,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 177 states and 10643 transitions. [2023-08-30 08:33:47,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 178 states, 177 states have (on average 60.12994350282486) internal successors, (10643), 177 states have internal predecessors, (10643), 0 states have call successors, (0), 0 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 08:33:47,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 178 states, 178 states have (on average 162.0) internal successors, (28836), 178 states have internal predecessors, (28836), 0 states have call successors, (0), 0 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 08:33:47,058 INFO L81 ComplementDD]: Finished complementDD. Result has 178 states, 178 states have (on average 162.0) internal successors, (28836), 178 states have internal predecessors, (28836), 0 states have call successors, (0), 0 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 08:33:47,059 INFO L175 Difference]: Start difference. First operand has 1174 places, 1697 transitions, 28879 flow. Second operand 177 states and 10643 transitions. [2023-08-30 08:33:47,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1350 places, 2250 transitions, 40427 flow [2023-08-30 08:34:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1273 places, 2250 transitions, 37737 flow, removed 859 selfloop flow, removed 77 redundant places. [2023-08-30 08:34:09,062 INFO L231 Difference]: Finished difference. Result has 1281 places, 1879 transitions, 33324 flow [2023-08-30 08:34:09,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=24203, PETRI_DIFFERENCE_MINUEND_PLACES=1097, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=177, PETRI_FLOW=33324, PETRI_PLACES=1281, PETRI_TRANSITIONS=1879} [2023-08-30 08:34:09,063 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1260 predicate places. [2023-08-30 08:34:09,063 INFO L495 AbstractCegarLoop]: Abstraction has has 1281 places, 1879 transitions, 33324 flow [2023-08-30 08:34:09,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 57.68181818181818) internal successors, (1269), 22 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 08:34:09,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:34:09,064 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:34:09,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 08:34:09,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:34:09,267 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:34:09,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:34:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash -186654248, now seen corresponding path program 2 times [2023-08-30 08:34:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:34:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553070670] [2023-08-30 08:34:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:34:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:34:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:34:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:34:09,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:34:09,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553070670] [2023-08-30 08:34:09,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553070670] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:34:09,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992708882] [2023-08-30 08:34:09,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:34:09,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:34:09,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:34:09,467 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:34:09,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 08:34:09,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:34:09,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:34:09,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 08:34:09,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:34:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:34:09,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:34:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:34:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992708882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:34:09,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:34:09,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2023-08-30 08:34:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218902395] [2023-08-30 08:34:09,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:34:09,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-30 08:34:09,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:34:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-30 08:34:09,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=802, Invalid=1360, Unknown=0, NotChecked=0, Total=2162 [2023-08-30 08:34:10,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:34:10,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1281 places, 1879 transitions, 33324 flow. Second operand has 47 states, 47 states have (on average 62.08510638297872) internal successors, (2918), 47 states have internal predecessors, (2918), 0 states have call successors, (0), 0 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 08:34:10,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:34:10,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:34:10,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:34:25,532 INFO L130 PetriNetUnfolder]: 13348/25287 cut-off events. [2023-08-30 08:34:25,532 INFO L131 PetriNetUnfolder]: For 3320191/3320191 co-relation queries the response was YES. [2023-08-30 08:34:25,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252439 conditions, 25287 events. 13348/25287 cut-off events. For 3320191/3320191 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 201169 event pairs, 4510 based on Foata normal form. 54/25341 useless extension candidates. Maximal degree in co-relation 252048. Up to 16039 conditions per place. [2023-08-30 08:34:26,086 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 2342 selfloop transitions, 636 changer transitions 0/2979 dead transitions. [2023-08-30 08:34:26,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1445 places, 2979 transitions, 55885 flow [2023-08-30 08:34:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-08-30 08:34:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2023-08-30 08:34:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 10870 transitions. [2023-08-30 08:34:26,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066591844369622 [2023-08-30 08:34:26,093 INFO L72 ComplementDD]: Start complementDD. Operand 165 states and 10870 transitions. [2023-08-30 08:34:26,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 10870 transitions. [2023-08-30 08:34:26,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:34:26,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 165 states and 10870 transitions. [2023-08-30 08:34:26,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 166 states, 165 states have (on average 65.87878787878788) internal successors, (10870), 165 states have internal predecessors, (10870), 0 states have call successors, (0), 0 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 08:34:26,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 166 states, 166 states have (on average 162.0) internal successors, (26892), 166 states have internal predecessors, (26892), 0 states have call successors, (0), 0 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 08:34:26,116 INFO L81 ComplementDD]: Finished complementDD. Result has 166 states, 166 states have (on average 162.0) internal successors, (26892), 166 states have internal predecessors, (26892), 0 states have call successors, (0), 0 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 08:34:26,116 INFO L175 Difference]: Start difference. First operand has 1281 places, 1879 transitions, 33324 flow. Second operand 165 states and 10870 transitions. [2023-08-30 08:34:26,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1445 places, 2979 transitions, 55885 flow [2023-08-30 08:34:56,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1357 places, 2979 transitions, 52420 flow, removed 932 selfloop flow, removed 88 redundant places. [2023-08-30 08:34:56,633 INFO L231 Difference]: Finished difference. Result has 1378 places, 2065 transitions, 35983 flow [2023-08-30 08:34:56,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=31501, PETRI_DIFFERENCE_MINUEND_PLACES=1193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=165, PETRI_FLOW=35983, PETRI_PLACES=1378, PETRI_TRANSITIONS=2065} [2023-08-30 08:34:56,634 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1357 predicate places. [2023-08-30 08:34:56,635 INFO L495 AbstractCegarLoop]: Abstraction has has 1378 places, 2065 transitions, 35983 flow [2023-08-30 08:34:56,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 62.08510638297872) internal successors, (2918), 47 states have internal predecessors, (2918), 0 states have call successors, (0), 0 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 08:34:56,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:34:56,635 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1] [2023-08-30 08:34:56,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 08:34:56,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:34:56,836 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:34:56,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:34:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -94593438, now seen corresponding path program 3 times [2023-08-30 08:34:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:34:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694874192] [2023-08-30 08:34:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:34:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:34:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:34:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:34:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:34:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694874192] [2023-08-30 08:34:56,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694874192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:34:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678593747] [2023-08-30 08:34:56,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:34:56,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:34:56,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:34:56,982 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:34:56,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 08:34:57,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 08:34:57,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:34:57,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:34:57,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:34:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-30 08:34:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:34:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-30 08:34:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678593747] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:34:57,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:34:57,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 22 [2023-08-30 08:34:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109426719] [2023-08-30 08:34:57,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:34:57,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 08:34:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:34:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 08:34:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2023-08-30 08:34:57,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 162 [2023-08-30 08:34:57,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1378 places, 2065 transitions, 35983 flow. Second operand has 23 states, 23 states have (on average 59.56521739130435) internal successors, (1370), 23 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 08:34:57,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:34:57,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 162 [2023-08-30 08:34:57,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:35:16,144 INFO L130 PetriNetUnfolder]: 17688/33381 cut-off events. [2023-08-30 08:35:16,145 INFO L131 PetriNetUnfolder]: For 5853324/5853324 co-relation queries the response was YES. [2023-08-30 08:35:17,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291456 conditions, 33381 events. 17688/33381 cut-off events. For 5853324/5853324 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 275534 event pairs, 0 based on Foata normal form. 273/33654 useless extension candidates. Maximal degree in co-relation 291184. Up to 14934 conditions per place. [2023-08-30 08:35:17,255 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 1628 selfloop transitions, 1503 changer transitions 0/3132 dead transitions. [2023-08-30 08:35:17,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1474 places, 3132 transitions, 60280 flow [2023-08-30 08:35:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-30 08:35:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-30 08:35:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 6100 transitions. [2023-08-30 08:35:17,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38818887616138475 [2023-08-30 08:35:17,280 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 6100 transitions. [2023-08-30 08:35:17,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 6100 transitions. [2023-08-30 08:35:17,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:35:17,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 6100 transitions. [2023-08-30 08:35:17,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 62.88659793814433) internal successors, (6100), 97 states have internal predecessors, (6100), 0 states have call successors, (0), 0 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 08:35:17,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 162.0) internal successors, (15876), 98 states have internal predecessors, (15876), 0 states have call successors, (0), 0 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 08:35:17,307 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 162.0) internal successors, (15876), 98 states have internal predecessors, (15876), 0 states have call successors, (0), 0 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 08:35:17,316 INFO L175 Difference]: Start difference. First operand has 1378 places, 2065 transitions, 35983 flow. Second operand 97 states and 6100 transitions. [2023-08-30 08:35:17,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1474 places, 3132 transitions, 60280 flow [2023-08-30 08:35:57,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1429 places, 3132 transitions, 59146 flow, removed 308 selfloop flow, removed 45 redundant places. [2023-08-30 08:35:57,471 INFO L231 Difference]: Finished difference. Result has 1439 places, 2436 transitions, 47773 flow [2023-08-30 08:35:57,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=34898, PETRI_DIFFERENCE_MINUEND_PLACES=1333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2065, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=47773, PETRI_PLACES=1439, PETRI_TRANSITIONS=2436} [2023-08-30 08:35:57,473 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1418 predicate places. [2023-08-30 08:35:57,473 INFO L495 AbstractCegarLoop]: Abstraction has has 1439 places, 2436 transitions, 47773 flow [2023-08-30 08:35:57,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.56521739130435) internal successors, (1370), 23 states have internal predecessors, (1370), 0 states have call successors, (0), 0 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 08:35:57,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:35:57,473 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2023-08-30 08:35:57,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 08:35:57,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:35:57,678 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:35:57,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:35:57,679 INFO L85 PathProgramCache]: Analyzing trace with hash 421268076, now seen corresponding path program 2 times [2023-08-30 08:35:57,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:35:57,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920581193] [2023-08-30 08:35:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:35:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:35:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:35:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:35:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:35:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920581193] [2023-08-30 08:35:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920581193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:35:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923657453] [2023-08-30 08:35:57,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:35:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:35:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:35:57,788 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:35:57,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 08:35:57,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:35:57,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:35:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:35:57,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:35:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:35:57,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:35:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:35:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923657453] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:35:58,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:35:58,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-08-30 08:35:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837477490] [2023-08-30 08:35:58,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:35:58,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 08:35:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:35:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 08:35:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=538, Unknown=0, NotChecked=0, Total=812 [2023-08-30 08:35:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:35:58,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1439 places, 2436 transitions, 47773 flow. Second operand has 29 states, 29 states have (on average 62.758620689655174) internal successors, (1820), 29 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 08:35:58,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:35:58,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:35:58,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:36:20,536 INFO L130 PetriNetUnfolder]: 18715/35427 cut-off events. [2023-08-30 08:36:20,536 INFO L131 PetriNetUnfolder]: For 4555460/4555460 co-relation queries the response was YES. [2023-08-30 08:36:21,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316352 conditions, 35427 events. 18715/35427 cut-off events. For 4555460/4555460 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 297692 event pairs, 8212 based on Foata normal form. 141/35568 useless extension candidates. Maximal degree in co-relation 315843. Up to 27376 conditions per place. [2023-08-30 08:36:22,107 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 2018 selfloop transitions, 903 changer transitions 0/2922 dead transitions. [2023-08-30 08:36:22,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1531 places, 2922 transitions, 59607 flow [2023-08-30 08:36:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-08-30 08:36:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-08-30 08:36:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 6169 transitions. [2023-08-30 08:36:22,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094650205761317 [2023-08-30 08:36:22,112 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 6169 transitions. [2023-08-30 08:36:22,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 6169 transitions. [2023-08-30 08:36:22,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:36:22,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 6169 transitions. [2023-08-30 08:36:22,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 66.33333333333333) internal successors, (6169), 93 states have internal predecessors, (6169), 0 states have call successors, (0), 0 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 08:36:22,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 162.0) internal successors, (15228), 94 states have internal predecessors, (15228), 0 states have call successors, (0), 0 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 08:36:22,124 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 162.0) internal successors, (15228), 94 states have internal predecessors, (15228), 0 states have call successors, (0), 0 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 08:36:22,125 INFO L175 Difference]: Start difference. First operand has 1439 places, 2436 transitions, 47773 flow. Second operand 93 states and 6169 transitions. [2023-08-30 08:36:22,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1531 places, 2922 transitions, 59607 flow [2023-08-30 08:37:08,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1393 places, 2922 transitions, 54798 flow, removed 1712 selfloop flow, removed 138 redundant places. [2023-08-30 08:37:08,710 INFO L231 Difference]: Finished difference. Result has 1418 places, 2585 transitions, 48342 flow [2023-08-30 08:37:08,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=43230, PETRI_DIFFERENCE_MINUEND_PLACES=1301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=48342, PETRI_PLACES=1418, PETRI_TRANSITIONS=2585} [2023-08-30 08:37:08,713 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1397 predicate places. [2023-08-30 08:37:08,713 INFO L495 AbstractCegarLoop]: Abstraction has has 1418 places, 2585 transitions, 48342 flow [2023-08-30 08:37:08,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 62.758620689655174) internal successors, (1820), 29 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 08:37:08,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:37:08,713 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:37:08,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 08:37:08,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:37:08,918 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:37:08,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:37:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash -828323831, now seen corresponding path program 1 times [2023-08-30 08:37:08,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:37:08,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376392662] [2023-08-30 08:37:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:37:08,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:37:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:37:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:37:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:37:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376392662] [2023-08-30 08:37:09,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376392662] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:37:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907027851] [2023-08-30 08:37:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:37:09,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:37:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:37:09,033 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:37:09,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 08:37:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:37:09,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 08:37:09,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:37:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:37:09,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:37:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:37:09,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907027851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:37:09,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:37:09,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 08:37:09,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283371215] [2023-08-30 08:37:09,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:37:09,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 08:37:09,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:37:09,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 08:37:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2023-08-30 08:37:09,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:37:09,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1418 places, 2585 transitions, 48342 flow. Second operand has 19 states, 19 states have (on average 68.3157894736842) internal successors, (1298), 19 states have internal predecessors, (1298), 0 states have call successors, (0), 0 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 08:37:09,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:37:09,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:37:09,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:37:30,876 INFO L130 PetriNetUnfolder]: 20774/39553 cut-off events. [2023-08-30 08:37:30,877 INFO L131 PetriNetUnfolder]: For 683687/683687 co-relation queries the response was YES. [2023-08-30 08:37:31,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311364 conditions, 39553 events. 20774/39553 cut-off events. For 683687/683687 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 336467 event pairs, 1040 based on Foata normal form. 168/39721 useless extension candidates. Maximal degree in co-relation 310908. Up to 9045 conditions per place. [2023-08-30 08:37:32,134 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 3354 selfloop transitions, 1079 changer transitions 0/4434 dead transitions. [2023-08-30 08:37:32,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1456 places, 4434 transitions, 101921 flow [2023-08-30 08:37:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-30 08:37:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-30 08:37:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2884 transitions. [2023-08-30 08:37:32,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564735675846787 [2023-08-30 08:37:32,136 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2884 transitions. [2023-08-30 08:37:32,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2884 transitions. [2023-08-30 08:37:32,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:37:32,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2884 transitions. [2023-08-30 08:37:32,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 73.94871794871794) internal successors, (2884), 39 states have internal predecessors, (2884), 0 states have call successors, (0), 0 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 08:37:32,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 162.0) internal successors, (6480), 40 states have internal predecessors, (6480), 0 states have call successors, (0), 0 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 08:37:32,141 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 162.0) internal successors, (6480), 40 states have internal predecessors, (6480), 0 states have call successors, (0), 0 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 08:37:32,141 INFO L175 Difference]: Start difference. First operand has 1418 places, 2585 transitions, 48342 flow. Second operand 39 states and 2884 transitions. [2023-08-30 08:37:32,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1456 places, 4434 transitions, 101921 flow [2023-08-30 08:37:57,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1415 places, 4434 transitions, 100682 flow, removed 231 selfloop flow, removed 41 redundant places. [2023-08-30 08:37:57,538 INFO L231 Difference]: Finished difference. Result has 1428 places, 2711 transitions, 52369 flow [2023-08-30 08:37:57,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=47263, PETRI_DIFFERENCE_MINUEND_PLACES=1377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=972, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=52369, PETRI_PLACES=1428, PETRI_TRANSITIONS=2711} [2023-08-30 08:37:57,541 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1407 predicate places. [2023-08-30 08:37:57,541 INFO L495 AbstractCegarLoop]: Abstraction has has 1428 places, 2711 transitions, 52369 flow [2023-08-30 08:37:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 68.3157894736842) internal successors, (1298), 19 states have internal predecessors, (1298), 0 states have call successors, (0), 0 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 08:37:57,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:37:57,541 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:37:57,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 08:37:57,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 08:37:57,742 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:37:57,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:37:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash -828323822, now seen corresponding path program 2 times [2023-08-30 08:37:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:37:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646345551] [2023-08-30 08:37:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:37:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:37:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:37:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:37:57,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:37:57,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646345551] [2023-08-30 08:37:57,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646345551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:37:57,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242937514] [2023-08-30 08:37:57,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:37:57,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:37:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:37:57,840 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:37:57,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 08:37:57,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:37:57,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:37:57,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:37:57,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:37:57,915 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:37:57,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:37:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:37:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242937514] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:37:58,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:37:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-30 08:37:58,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609276085] [2023-08-30 08:37:58,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:37:58,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:37:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:37:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:37:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:37:58,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 162 [2023-08-30 08:37:58,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1428 places, 2711 transitions, 52369 flow. Second operand has 21 states, 21 states have (on average 63.095238095238095) internal successors, (1325), 21 states have internal predecessors, (1325), 0 states have call successors, (0), 0 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 08:37:58,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:37:58,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 162 [2023-08-30 08:37:58,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:38:23,325 INFO L130 PetriNetUnfolder]: 21766/41293 cut-off events. [2023-08-30 08:38:23,326 INFO L131 PetriNetUnfolder]: For 765037/765037 co-relation queries the response was YES. [2023-08-30 08:38:24,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348258 conditions, 41293 events. 21766/41293 cut-off events. For 765037/765037 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 352056 event pairs, 862 based on Foata normal form. 114/41407 useless extension candidates. Maximal degree in co-relation 347784. Up to 9447 conditions per place. [2023-08-30 08:38:25,004 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 1745 selfloop transitions, 3114 changer transitions 0/4860 dead transitions. [2023-08-30 08:38:25,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1528 places, 4860 transitions, 112227 flow [2023-08-30 08:38:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-08-30 08:38:25,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-08-30 08:38:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 6812 transitions. [2023-08-30 08:38:25,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416330521941083 [2023-08-30 08:38:25,010 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 6812 transitions. [2023-08-30 08:38:25,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 6812 transitions. [2023-08-30 08:38:25,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:38:25,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 6812 transitions. [2023-08-30 08:38:25,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 67.44554455445545) internal successors, (6812), 101 states have internal predecessors, (6812), 0 states have call successors, (0), 0 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 08:38:25,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 162.0) internal successors, (16524), 102 states have internal predecessors, (16524), 0 states have call successors, (0), 0 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 08:38:25,027 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 162.0) internal successors, (16524), 102 states have internal predecessors, (16524), 0 states have call successors, (0), 0 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 08:38:25,027 INFO L175 Difference]: Start difference. First operand has 1428 places, 2711 transitions, 52369 flow. Second operand 101 states and 6812 transitions. [2023-08-30 08:38:25,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1528 places, 4860 transitions, 112227 flow [2023-08-30 08:38:56,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1501 places, 4860 transitions, 108964 flow, removed 534 selfloop flow, removed 27 redundant places. [2023-08-30 08:38:57,016 INFO L231 Difference]: Finished difference. Result has 1522 places, 4268 transitions, 96156 flow [2023-08-30 08:38:57,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=49485, PETRI_DIFFERENCE_MINUEND_PLACES=1401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1807, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=877, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=96156, PETRI_PLACES=1522, PETRI_TRANSITIONS=4268} [2023-08-30 08:38:57,019 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1501 predicate places. [2023-08-30 08:38:57,019 INFO L495 AbstractCegarLoop]: Abstraction has has 1522 places, 4268 transitions, 96156 flow [2023-08-30 08:38:57,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 63.095238095238095) internal successors, (1325), 21 states have internal predecessors, (1325), 0 states have call successors, (0), 0 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 08:38:57,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:38:57,019 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 08:38:57,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 08:38:57,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 08:38:57,221 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:38:57,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:38:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1099411471, now seen corresponding path program 2 times [2023-08-30 08:38:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:38:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084536433] [2023-08-30 08:38:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:38:57,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:38:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:38:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:38:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:38:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084536433] [2023-08-30 08:38:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084536433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:38:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267026148] [2023-08-30 08:38:57,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 08:38:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:38:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:38:57,305 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:38:57,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 08:38:57,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 08:38:57,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:38:57,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 08:38:57,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:38:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:38:57,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:38:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:38:57,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267026148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:38:57,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:38:57,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-30 08:38:57,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384289736] [2023-08-30 08:38:57,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:38:57,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 08:38:57,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:38:57,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 08:38:57,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2023-08-30 08:38:57,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:38:57,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1522 places, 4268 transitions, 96156 flow. Second operand has 21 states, 21 states have (on average 68.28571428571429) internal successors, (1434), 21 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 08:38:57,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:38:57,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:38:57,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:39:34,819 INFO L130 PetriNetUnfolder]: 23645/44723 cut-off events. [2023-08-30 08:39:34,819 INFO L131 PetriNetUnfolder]: For 1422696/1422696 co-relation queries the response was YES. [2023-08-30 08:39:36,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395782 conditions, 44723 events. 23645/44723 cut-off events. For 1422696/1422696 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 384760 event pairs, 4784 based on Foata normal form. 534/45254 useless extension candidates. Maximal degree in co-relation 395549. Up to 15707 conditions per place. [2023-08-30 08:39:36,416 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 3718 selfloop transitions, 1373 changer transitions 0/5092 dead transitions. [2023-08-30 08:39:36,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1601 places, 5092 transitions, 125153 flow [2023-08-30 08:39:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-08-30 08:39:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-08-30 08:39:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5870 transitions. [2023-08-30 08:39:36,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529320987654321 [2023-08-30 08:39:36,420 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5870 transitions. [2023-08-30 08:39:36,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5870 transitions. [2023-08-30 08:39:36,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:39:36,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5870 transitions. [2023-08-30 08:39:36,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 73.375) internal successors, (5870), 80 states have internal predecessors, (5870), 0 states have call successors, (0), 0 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 08:39:36,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 162.0) internal successors, (13122), 81 states have internal predecessors, (13122), 0 states have call successors, (0), 0 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 08:39:36,430 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 162.0) internal successors, (13122), 81 states have internal predecessors, (13122), 0 states have call successors, (0), 0 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 08:39:36,430 INFO L175 Difference]: Start difference. First operand has 1522 places, 4268 transitions, 96156 flow. Second operand 80 states and 5870 transitions. [2023-08-30 08:39:36,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1601 places, 5092 transitions, 125153 flow [2023-08-30 08:40:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1568 places, 5092 transitions, 122251 flow, removed 567 selfloop flow, removed 33 redundant places. [2023-08-30 08:40:23,735 INFO L231 Difference]: Finished difference. Result has 1595 places, 4514 transitions, 103028 flow [2023-08-30 08:40:23,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=93554, PETRI_DIFFERENCE_MINUEND_PLACES=1489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3084, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=103028, PETRI_PLACES=1595, PETRI_TRANSITIONS=4514} [2023-08-30 08:40:23,738 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1574 predicate places. [2023-08-30 08:40:23,738 INFO L495 AbstractCegarLoop]: Abstraction has has 1595 places, 4514 transitions, 103028 flow [2023-08-30 08:40:23,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 68.28571428571429) internal successors, (1434), 21 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 08:40:23,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:40:23,738 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-08-30 08:40:23,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 08:40:23,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 08:40:23,939 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:40:23,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:40:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1099411480, now seen corresponding path program 3 times [2023-08-30 08:40:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:40:23,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478961639] [2023-08-30 08:40:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:40:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:40:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:40:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:40:24,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:40:24,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478961639] [2023-08-30 08:40:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478961639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:40:24,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339828697] [2023-08-30 08:40:24,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:40:24,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:40:24,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:40:24,061 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:40:24,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 08:40:24,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 08:40:24,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:40:24,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 08:40:24,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:40:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-08-30 08:40:24,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:40:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-08-30 08:40:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339828697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:40:24,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:40:24,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2023-08-30 08:40:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432465123] [2023-08-30 08:40:24,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:40:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 08:40:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:40:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 08:40:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-08-30 08:40:24,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 162 [2023-08-30 08:40:24,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1595 places, 4514 transitions, 103028 flow. Second operand has 18 states, 18 states have (on average 61.0) internal successors, (1098), 18 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 08:40:24,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:40:24,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 162 [2023-08-30 08:40:24,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:41:26,027 INFO L130 PetriNetUnfolder]: 30027/56700 cut-off events. [2023-08-30 08:41:26,028 INFO L131 PetriNetUnfolder]: For 1962347/1962347 co-relation queries the response was YES. [2023-08-30 08:41:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525510 conditions, 56700 events. 30027/56700 cut-off events. For 1962347/1962347 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 503296 event pairs, 0 based on Foata normal form. 1398/58098 useless extension candidates. Maximal degree in co-relation 525250. Up to 14961 conditions per place. [2023-08-30 08:41:29,322 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 1453 selfloop transitions, 4949 changer transitions 0/6403 dead transitions. [2023-08-30 08:41:29,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1808 places, 6403 transitions, 156160 flow [2023-08-30 08:41:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2023-08-30 08:41:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2023-08-30 08:41:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 13865 transitions. [2023-08-30 08:41:29,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944074642999374 [2023-08-30 08:41:29,331 INFO L72 ComplementDD]: Start complementDD. Operand 217 states and 13865 transitions. [2023-08-30 08:41:29,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 13865 transitions. [2023-08-30 08:41:29,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:41:29,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 217 states and 13865 transitions. [2023-08-30 08:41:29,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 218 states, 217 states have (on average 63.894009216589865) internal successors, (13865), 217 states have internal predecessors, (13865), 0 states have call successors, (0), 0 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 08:41:29,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 218 states, 218 states have (on average 162.0) internal successors, (35316), 218 states have internal predecessors, (35316), 0 states have call successors, (0), 0 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 08:41:29,360 INFO L81 ComplementDD]: Finished complementDD. Result has 218 states, 218 states have (on average 162.0) internal successors, (35316), 218 states have internal predecessors, (35316), 0 states have call successors, (0), 0 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 08:41:29,361 INFO L175 Difference]: Start difference. First operand has 1595 places, 4514 transitions, 103028 flow. Second operand 217 states and 13865 transitions. [2023-08-30 08:41:29,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1808 places, 6403 transitions, 156160 flow [2023-08-30 08:42:37,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1767 places, 6403 transitions, 149828 flow, removed 1988 selfloop flow, removed 41 redundant places. [2023-08-30 08:42:37,915 INFO L231 Difference]: Finished difference. Result has 1796 places, 5668 transitions, 142489 flow [2023-08-30 08:42:37,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=98347, PETRI_DIFFERENCE_MINUEND_PLACES=1551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=217, PETRI_FLOW=142489, PETRI_PLACES=1796, PETRI_TRANSITIONS=5668} [2023-08-30 08:42:37,918 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1775 predicate places. [2023-08-30 08:42:37,918 INFO L495 AbstractCegarLoop]: Abstraction has has 1796 places, 5668 transitions, 142489 flow [2023-08-30 08:42:37,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.0) internal successors, (1098), 18 states have internal predecessors, (1098), 0 states have call successors, (0), 0 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 08:42:37,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:42:37,919 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-08-30 08:42:37,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 08:42:38,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:42:38,122 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:42:38,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:42:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2051144337, now seen corresponding path program 3 times [2023-08-30 08:42:38,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:42:38,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228838708] [2023-08-30 08:42:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:42:38,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:42:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:42:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 08:42:38,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:42:38,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228838708] [2023-08-30 08:42:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228838708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:42:38,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813658263] [2023-08-30 08:42:38,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 08:42:38,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:42:38,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:42:38,233 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:42:38,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 08:42:38,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 08:42:38,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:42:38,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 08:42:38,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:42:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-30 08:42:38,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:42:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-08-30 08:42:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813658263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:42:38,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:42:38,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2023-08-30 08:42:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147104115] [2023-08-30 08:42:38,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:42:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 08:42:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:42:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 08:42:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-08-30 08:42:38,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 162 [2023-08-30 08:42:38,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1796 places, 5668 transitions, 142489 flow. Second operand has 19 states, 19 states have (on average 64.26315789473684) internal successors, (1221), 19 states have internal predecessors, (1221), 0 states have call successors, (0), 0 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 08:42:38,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:42:38,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 162 [2023-08-30 08:42:38,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:43:46,621 INFO L130 PetriNetUnfolder]: 21272/46776 cut-off events. [2023-08-30 08:43:46,621 INFO L131 PetriNetUnfolder]: For 2091905/2091905 co-relation queries the response was YES. [2023-08-30 08:43:48,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396966 conditions, 46776 events. 21272/46776 cut-off events. For 2091905/2091905 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 450015 event pairs, 764 based on Foata normal form. 7248/54015 useless extension candidates. Maximal degree in co-relation 396668. Up to 12936 conditions per place. [2023-08-30 08:43:48,796 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 1493 selfloop transitions, 1940 changer transitions 0/3434 dead transitions. [2023-08-30 08:43:48,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1903 places, 3434 transitions, 76760 flow [2023-08-30 08:43:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-08-30 08:43:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-08-30 08:43:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 7191 transitions. [2023-08-30 08:43:48,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41100823045267487 [2023-08-30 08:43:48,801 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 7191 transitions. [2023-08-30 08:43:48,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 7191 transitions. [2023-08-30 08:43:48,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:43:48,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 7191 transitions. [2023-08-30 08:43:48,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 66.58333333333333) internal successors, (7191), 108 states have internal predecessors, (7191), 0 states have call successors, (0), 0 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 08:43:48,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 162.0) internal successors, (17658), 109 states have internal predecessors, (17658), 0 states have call successors, (0), 0 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 08:43:48,813 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 162.0) internal successors, (17658), 109 states have internal predecessors, (17658), 0 states have call successors, (0), 0 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 08:43:48,813 INFO L175 Difference]: Start difference. First operand has 1796 places, 5668 transitions, 142489 flow. Second operand 108 states and 7191 transitions. [2023-08-30 08:43:48,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1903 places, 3434 transitions, 76760 flow [2023-08-30 08:44:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1772 places, 3434 transitions, 65280 flow, removed 2594 selfloop flow, removed 131 redundant places. [2023-08-30 08:44:30,322 INFO L231 Difference]: Finished difference. Result has 1779 places, 3125 transitions, 58657 flow [2023-08-30 08:44:30,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=52669, PETRI_DIFFERENCE_MINUEND_PLACES=1665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1835, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=58657, PETRI_PLACES=1779, PETRI_TRANSITIONS=3125} [2023-08-30 08:44:30,325 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1758 predicate places. [2023-08-30 08:44:30,325 INFO L495 AbstractCegarLoop]: Abstraction has has 1779 places, 3125 transitions, 58657 flow [2023-08-30 08:44:30,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.26315789473684) internal successors, (1221), 19 states have internal predecessors, (1221), 0 states have call successors, (0), 0 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 08:44:30,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:44:30,326 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 08:44:30,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 08:44:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 08:44:30,530 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-08-30 08:44:30,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:44:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1527627373, now seen corresponding path program 4 times [2023-08-30 08:44:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:44:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340834020] [2023-08-30 08:44:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:44:30,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:44:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:44:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 08:44:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:44:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340834020] [2023-08-30 08:44:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340834020] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:44:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614147758] [2023-08-30 08:44:30,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 08:44:30,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:44:30,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:44:30,671 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 08:44:30,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 08:44:30,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 08:44:30,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 08:44:30,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 08:44:30,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:44:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 08:44:30,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:44:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 08:44:30,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614147758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:44:30,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:44:30,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 08:44:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076839950] [2023-08-30 08:44:30,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:44:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 08:44:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:44:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 08:44:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2023-08-30 08:44:31,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 162 [2023-08-30 08:44:31,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1779 places, 3125 transitions, 58657 flow. Second operand has 25 states, 25 states have (on average 68.24) internal successors, (1706), 25 states have internal predecessors, (1706), 0 states have call successors, (0), 0 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 08:44:31,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:44:31,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 162 [2023-08-30 08:44:31,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:45:04,436 INFO L130 PetriNetUnfolder]: 22421/49101 cut-off events. [2023-08-30 08:45:04,436 INFO L131 PetriNetUnfolder]: For 853600/853600 co-relation queries the response was YES. [2023-08-30 08:45:06,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392345 conditions, 49101 events. 22421/49101 cut-off events. For 853600/853600 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 475124 event pairs, 13212 based on Foata normal form. 342/49443 useless extension candidates. Maximal degree in co-relation 391691. Up to 35814 conditions per place. [2023-08-30 08:45:06,752 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 2379 selfloop transitions, 1436 changer transitions 0/3816 dead transitions. [2023-08-30 08:45:06,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1856 places, 3816 transitions, 76789 flow [2023-08-30 08:45:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-30 08:45:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-08-30 08:45:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 5645 transitions. [2023-08-30 08:45:06,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467394745172523 [2023-08-30 08:45:06,756 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 5645 transitions. [2023-08-30 08:45:06,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 5645 transitions. [2023-08-30 08:45:06,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:45:06,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 5645 transitions. [2023-08-30 08:45:06,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 72.37179487179488) internal successors, (5645), 78 states have internal predecessors, (5645), 0 states have call successors, (0), 0 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 08:45:06,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 162.0) internal successors, (12798), 79 states have internal predecessors, (12798), 0 states have call successors, (0), 0 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 08:45:06,765 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 162.0) internal successors, (12798), 79 states have internal predecessors, (12798), 0 states have call successors, (0), 0 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 08:45:06,765 INFO L175 Difference]: Start difference. First operand has 1779 places, 3125 transitions, 58657 flow. Second operand 78 states and 5645 transitions. [2023-08-30 08:45:06,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1856 places, 3816 transitions, 76789 flow Killed by 15