./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.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/26_stack_cas_longer-1.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 e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f --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 08:26:33,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 08:26:33,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 08:26:33,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 08:26:33,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 08:26:33,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 08:26:33,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 08:26:33,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 08:26:33,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 08:26:33,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 08:26:33,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 08:26:33,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 08:26:33,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 08:26:33,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 08:26:33,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 08:26:33,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 08:26:33,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 08:26:33,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 08:26:33,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 08:26:33,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 08:26:33,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 08:26:33,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 08:26:33,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 08:26:33,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 08:26:33,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 08:26:33,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 08:26:33,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 08:26:33,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 08:26:33,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 08:26:33,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 08:26:33,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 08:26:33,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 08:26:33,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 08:26:33,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 08:26:33,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 08:26:33,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 08:26:33,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 08:26:33,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 08:26:33,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 08:26:33,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 08:26:33,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 08:26:33,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 08:26:33,379 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 08:26:33,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 08:26:33,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 08:26:33,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 08:26:33,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 08:26:33,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 08:26:33,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 08:26:33,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 08:26:33,382 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 08:26:33,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 08:26:33,383 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 08:26:33,383 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 08:26:33,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 08:26:33,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 08:26:33,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 08:26:33,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 08:26:33,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 08:26:33,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 08:26:33,384 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 08:26:33,385 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 08:26:33,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 08:26:33,385 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 08:26:33,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 08:26:33,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 08:26:33,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 08:26:33,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 08:26:33,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:26:33,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 08:26:33,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 08:26:33,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 08:26:33,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 08:26:33,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 08:26:33,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 08:26:33,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 08:26:33,387 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 08:26:33,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 08:26:33,388 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 08:26:33,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 08:26:33,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 08:26:33,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 08:26:33,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 08:26:33,673 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 08:26:33,673 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 08:26:33,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-30 08:26:34,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 08:26:34,910 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 08:26:34,911 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-30 08:26:34,918 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72fd7527f/aff07408454b4315bbbed218d87815cb/FLAG9cc69cbb9 [2023-08-30 08:26:34,930 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72fd7527f/aff07408454b4315bbbed218d87815cb [2023-08-30 08:26:34,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 08:26:34,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 08:26:34,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 08:26:34,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 08:26:34,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 08:26:34,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:26:34" (1/1) ... [2023-08-30 08:26:34,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ced90d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:34, skipping insertion in model container [2023-08-30 08:26:34,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 08:26:34" (1/1) ... [2023-08-30 08:26:34,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 08:26:34,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 08:26:35,256 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-30 08:26:35,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:26:35,278 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 08:26:35,324 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/26_stack_cas_longer-1.i[31166,31179] [2023-08-30 08:26:35,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 08:26:35,368 INFO L208 MainTranslator]: Completed translation [2023-08-30 08:26:35,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35 WrapperNode [2023-08-30 08:26:35,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 08:26:35,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 08:26:35,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 08:26:35,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 08:26:35,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,424 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-08-30 08:26:35,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 08:26:35,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 08:26:35,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 08:26:35,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 08:26:35,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 08:26:35,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 08:26:35,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 08:26:35,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 08:26:35,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (1/1) ... [2023-08-30 08:26:35,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 08:26:35,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:35,501 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 08:26:35,507 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 08:26:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 08:26:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 08:26:35,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 08:26:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 08:26:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 08:26:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 08:26:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 08:26:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 08:26:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 08:26:35,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 08:26:35,532 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 08:26:35,675 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 08:26:35,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 08:26:35,979 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 08:26:36,094 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 08:26:36,094 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 08:26:36,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:26:36 BoogieIcfgContainer [2023-08-30 08:26:36,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 08:26:36,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 08:26:36,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 08:26:36,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 08:26:36,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 08:26:34" (1/3) ... [2023-08-30 08:26:36,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fbd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:26:36, skipping insertion in model container [2023-08-30 08:26:36,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 08:26:35" (2/3) ... [2023-08-30 08:26:36,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fbd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 08:26:36, skipping insertion in model container [2023-08-30 08:26:36,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 08:26:36" (3/3) ... [2023-08-30 08:26:36,101 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-08-30 08:26:36,107 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 08:26:36,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 08:26:36,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 08:26:36,147 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 08:26:36,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:36,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:36,294 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:36,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:36,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:36,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:36,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:36,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:36,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:36,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:36,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:36,376 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:36,380 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:36,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:26:40,577 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-08-30 08:26:40,577 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:26:40,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:40,590 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;@1d1badf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:40,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 08:26:40,602 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-08-30 08:26:40,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:40,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:40,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:40,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:40,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash 288098820, now seen corresponding path program 1 times [2023-08-30 08:26:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725561596] [2023-08-30 08:26:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:40,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:40,808 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 08:26:40,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725561596] [2023-08-30 08:26:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725561596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:40,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:40,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:40,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055132475] [2023-08-30 08:26:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:40,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:40,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:40,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 269 [2023-08-30 08:26:40,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 38 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:40,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:40,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 269 [2023-08-30 08:26:40,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:40,915 INFO L130 PetriNetUnfolder]: 52/119 cut-off events. [2023-08-30 08:26:40,915 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:40,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 119 events. 52/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 301 event pairs, 2 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 228. Up to 108 conditions per place. [2023-08-30 08:26:40,919 INFO L137 encePairwiseOnDemand]: 258/269 looper letters, 27 selfloop transitions, 2 changer transitions 1/31 dead transitions. [2023-08-30 08:26:40,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 127 flow [2023-08-30 08:26:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 08:26:40,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48451053283767037 [2023-08-30 08:26:40,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 08:26:40,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 08:26:40,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:40,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 08:26:40,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:40,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:40,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:40,946 INFO L175 Difference]: Start difference. First operand has 34 places, 38 transitions, 81 flow. Second operand 3 states and 391 transitions. [2023-08-30 08:26:40,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 127 flow [2023-08-30 08:26:40,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:40,949 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 65 flow [2023-08-30 08:26:40,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-08-30 08:26:40,954 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:26:40,954 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 65 flow [2023-08-30 08:26:40,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:40,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:40,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:40,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 08:26:40,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:40,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1508206433, now seen corresponding path program 1 times [2023-08-30 08:26:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:40,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373013544] [2023-08-30 08:26:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:40,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:41,047 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 08:26:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373013544] [2023-08-30 08:26:41,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373013544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:41,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:41,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:26:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319167455] [2023-08-30 08:26:41,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:41,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:41,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:26:41,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:41,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:26:41,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:41,112 INFO L130 PetriNetUnfolder]: 58/134 cut-off events. [2023-08-30 08:26:41,113 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:41,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 134 events. 58/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 350 event pairs, 12 based on Foata normal form. 3/110 useless extension candidates. Maximal degree in co-relation 261. Up to 98 conditions per place. [2023-08-30 08:26:41,114 INFO L137 encePairwiseOnDemand]: 263/269 looper letters, 30 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-30 08:26:41,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 143 flow [2023-08-30 08:26:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-30 08:26:41,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547707558859975 [2023-08-30 08:26:41,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-30 08:26:41,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-30 08:26:41,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:41,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-30 08:26:41,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,119 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 65 flow. Second operand 3 states and 367 transitions. [2023-08-30 08:26:41,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 143 flow [2023-08-30 08:26:41,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:41,121 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 79 flow [2023-08-30 08:26:41,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-30 08:26:41,121 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-30 08:26:41,121 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 79 flow [2023-08-30 08:26:41,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:41,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:41,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 08:26:41,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:41,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372441, now seen corresponding path program 1 times [2023-08-30 08:26:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:41,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404233341] [2023-08-30 08:26:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:41,234 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 08:26:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:41,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404233341] [2023-08-30 08:26:41,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404233341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:41,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:41,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:41,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429244542] [2023-08-30 08:26:41,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:41,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:41,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:26:41,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:41,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:26:41,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:41,440 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:26:41,441 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:41,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 187 events. 81/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 439 event pairs, 12 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 385. Up to 93 conditions per place. [2023-08-30 08:26:41,442 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 44 selfloop transitions, 7 changer transitions 1/53 dead transitions. [2023-08-30 08:26:41,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 231 flow [2023-08-30 08:26:41,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:26:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:26:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2023-08-30 08:26:41,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385554965480616 [2023-08-30 08:26:41,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2023-08-30 08:26:41,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2023-08-30 08:26:41,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:41,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2023-08-30 08:26:41,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.71428571428571) internal successors, (726), 7 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,449 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,449 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 79 flow. Second operand 7 states and 726 transitions. [2023-08-30 08:26:41,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 231 flow [2023-08-30 08:26:41,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:41,451 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 126 flow [2023-08-30 08:26:41,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-08-30 08:26:41,452 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 08:26:41,452 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 126 flow [2023-08-30 08:26:41,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:41,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 08:26:41,453 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:41,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1328372440, now seen corresponding path program 1 times [2023-08-30 08:26:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437812576] [2023-08-30 08:26:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:41,545 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 08:26:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:41,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437812576] [2023-08-30 08:26:41,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437812576] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:41,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:41,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653990129] [2023-08-30 08:26:41,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:41,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 269 [2023-08-30 08:26:41,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:41,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 269 [2023-08-30 08:26:41,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:41,716 INFO L130 PetriNetUnfolder]: 81/187 cut-off events. [2023-08-30 08:26:41,716 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 08:26:41,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 187 events. 81/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 427 event pairs, 6 based on Foata normal form. 3/172 useless extension candidates. Maximal degree in co-relation 442. Up to 64 conditions per place. [2023-08-30 08:26:41,717 INFO L137 encePairwiseOnDemand]: 261/269 looper letters, 42 selfloop transitions, 9 changer transitions 1/53 dead transitions. [2023-08-30 08:26:41,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 272 flow [2023-08-30 08:26:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 08:26:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 08:26:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2023-08-30 08:26:41,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38502389803505044 [2023-08-30 08:26:41,718 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2023-08-30 08:26:41,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2023-08-30 08:26:41,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:41,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2023-08-30 08:26:41,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,723 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 269.0) internal successors, (2152), 8 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,723 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 126 flow. Second operand 7 states and 725 transitions. [2023-08-30 08:26:41,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 272 flow [2023-08-30 08:26:41,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:41,724 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 145 flow [2023-08-30 08:26:41,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-30 08:26:41,725 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-30 08:26:41,725 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 145 flow [2023-08-30 08:26:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:41,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:41,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 08:26:41,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:41,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265492, now seen corresponding path program 1 times [2023-08-30 08:26:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:41,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088031347] [2023-08-30 08:26:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:41,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088031347] [2023-08-30 08:26:41,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088031347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:41,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931507846] [2023-08-30 08:26:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:41,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:41,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:41,790 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 08:26:41,791 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 08:26:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:41,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:26:41,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:41,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 08:26:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931507846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:41,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 08:26:41,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 08:26:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046781643] [2023-08-30 08:26:41,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:41,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:26:41,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:26:41,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:41,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:41,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:26:41,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:42,011 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:26:42,011 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 08:26:42,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 177 events. 77/177 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 382 event pairs, 12 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 440. Up to 140 conditions per place. [2023-08-30 08:26:42,012 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 33 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-30 08:26:42,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 219 flow [2023-08-30 08:26:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 473 transitions. [2023-08-30 08:26:42,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395910780669145 [2023-08-30 08:26:42,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 473 transitions. [2023-08-30 08:26:42,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 473 transitions. [2023-08-30 08:26:42,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:42,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 473 transitions. [2023-08-30 08:26:42,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,031 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,031 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 145 flow. Second operand 4 states and 473 transitions. [2023-08-30 08:26:42,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 219 flow [2023-08-30 08:26:42,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 201 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 08:26:42,043 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 123 flow [2023-08-30 08:26:42,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-30 08:26:42,044 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 08:26:42,044 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 123 flow [2023-08-30 08:26:42,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:42,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:42,056 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 08:26:42,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:42,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:42,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1980265468, now seen corresponding path program 1 times [2023-08-30 08:26:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524310114] [2023-08-30 08:26:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:42,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:42,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:42,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524310114] [2023-08-30 08:26:42,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524310114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:42,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97719577] [2023-08-30 08:26:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:42,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:42,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:42,340 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 08:26:42,342 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 08:26:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:42,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 08:26:42,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:42,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97719577] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:42,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:42,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 08:26:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634836052] [2023-08-30 08:26:42,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:42,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:26:42,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:26:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:26:42,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 269 [2023-08-30 08:26:42,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:42,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 269 [2023-08-30 08:26:42,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:42,619 INFO L130 PetriNetUnfolder]: 79/182 cut-off events. [2023-08-30 08:26:42,619 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 08:26:42,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 182 events. 79/182 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 406 event pairs, 12 based on Foata normal form. 3/179 useless extension candidates. Maximal degree in co-relation 429. Up to 87 conditions per place. [2023-08-30 08:26:42,620 INFO L137 encePairwiseOnDemand]: 265/269 looper letters, 40 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2023-08-30 08:26:42,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 241 flow [2023-08-30 08:26:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:26:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:26:42,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-30 08:26:42,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43271375464684014 [2023-08-30 08:26:42,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-30 08:26:42,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-30 08:26:42,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:42,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-30 08:26:42,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,626 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 123 flow. Second operand 5 states and 582 transitions. [2023-08-30 08:26:42,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 241 flow [2023-08-30 08:26:42,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:42,629 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 132 flow [2023-08-30 08:26:42,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-08-30 08:26:42,632 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 08:26:42,632 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 132 flow [2023-08-30 08:26:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.71428571428571) internal successors, (796), 7 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:42,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:42,639 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 08:26:42,837 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,SelfDestructingSolverStorable5 [2023-08-30 08:26:42,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:42,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916078, now seen corresponding path program 1 times [2023-08-30 08:26:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405629455] [2023-08-30 08:26:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 08:26:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:42,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405629455] [2023-08-30 08:26:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405629455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:42,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:42,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417862061] [2023-08-30 08:26:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:42,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 269 [2023-08-30 08:26:42,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:42,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 269 [2023-08-30 08:26:42,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:42,945 INFO L130 PetriNetUnfolder]: 77/177 cut-off events. [2023-08-30 08:26:42,945 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 08:26:42,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 177 events. 77/177 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 377 event pairs, 6 based on Foata normal form. 3/174 useless extension candidates. Maximal degree in co-relation 431. Up to 155 conditions per place. [2023-08-30 08:26:42,946 INFO L137 encePairwiseOnDemand]: 267/269 looper letters, 32 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 08:26:42,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 198 flow [2023-08-30 08:26:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 08:26:42,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423791821561338 [2023-08-30 08:26:42,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 08:26:42,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 08:26:42,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:42,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 08:26:42,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,951 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 132 flow. Second operand 3 states and 357 transitions. [2023-08-30 08:26:42,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 198 flow [2023-08-30 08:26:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 193 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:42,952 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 125 flow [2023-08-30 08:26:42,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-30 08:26:42,952 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 08:26:42,952 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 125 flow [2023-08-30 08:26:42,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:42,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:42,953 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:42,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 08:26:42,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 08:26:42,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:42,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1584916077, now seen corresponding path program 1 times [2023-08-30 08:26:42,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:42,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114479970] [2023-08-30 08:26:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:42,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:43,052 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 08:26:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114479970] [2023-08-30 08:26:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114479970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:26:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116402948] [2023-08-30 08:26:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:43,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:26:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:26:43,054 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 08:26:43,057 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 08:26:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:43,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 08:26:43,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:26:43,206 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 08:26:43,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:26:43,273 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 08:26:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116402948] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:26:43,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:26:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 08:26:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784781516] [2023-08-30 08:26:43,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:26:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 08:26:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 08:26:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-08-30 08:26:43,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 269 [2023-08-30 08:26:43,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 125 flow. Second operand has 13 states, 13 states have (on average 95.07692307692308) internal successors, (1236), 13 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:43,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:43,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 269 [2023-08-30 08:26:43,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:43,598 INFO L130 PetriNetUnfolder]: 103/233 cut-off events. [2023-08-30 08:26:43,598 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 08:26:43,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 233 events. 103/233 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 527 event pairs, 6 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 561. Up to 69 conditions per place. [2023-08-30 08:26:43,599 INFO L137 encePairwiseOnDemand]: 260/269 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2023-08-30 08:26:43,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 71 transitions, 357 flow [2023-08-30 08:26:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:26:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:26:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1163 transitions. [2023-08-30 08:26:43,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36028500619578685 [2023-08-30 08:26:43,602 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1163 transitions. [2023-08-30 08:26:43,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1163 transitions. [2023-08-30 08:26:43,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:43,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1163 transitions. [2023-08-30 08:26:43,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.91666666666667) internal successors, (1163), 12 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:43,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:43,608 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:43,608 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 125 flow. Second operand 12 states and 1163 transitions. [2023-08-30 08:26:43,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 71 transitions, 357 flow [2023-08-30 08:26:43,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:43,609 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-30 08:26:43,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-30 08:26:43,610 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-30 08:26:43,610 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-30 08:26:43,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 95.07692307692308) internal successors, (1236), 13 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:43,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-30 08:26:43,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-30 08:26:43,613 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-30 08:26:43,614 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-30 08:26:43,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-30 08:26:43,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-30 08:26:43,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-30 08:26:43,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-30 08:26:43,621 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 08:26:43,819 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 08:26:43,820 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:43,821 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:26:43,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:43,840 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:43,841 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:43,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:43,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:43,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:43,842 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:43,842 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:43,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:43,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-08-30 08:26:43,850 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-08-30 08:26:43,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:43,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-08-30 08:26:43,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-08-30 08:26:47,147 INFO L134 LiptonReduction]: Checked pairs total: 2879 [2023-08-30 08:26:47,147 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-30 08:26:47,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:26:47,149 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;@1d1badf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:47,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:26:47,151 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 08:26:47,151 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 08:26:47,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:47,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 08:26:47,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:26:47,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1827183085, now seen corresponding path program 1 times [2023-08-30 08:26:47,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:47,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256772627] [2023-08-30 08:26:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:47,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:26:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:26:47,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:26:47,182 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:26:47,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:26:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 08:26:47,183 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:26:47,183 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:26:47,184 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:26:47,184 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 08:26:47,226 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:26:47,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:47,250 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:26:47,251 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:47,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:26:47,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:47,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:47,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:26:47,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:47,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:47,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:26:47,278 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:26:47,278 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:47,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:26:47,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:26:50,979 INFO L134 LiptonReduction]: Checked pairs total: 72746 [2023-08-30 08:26:50,979 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-30 08:26:50,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:26:50,981 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;@1d1badf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:26:50,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 08:26:50,983 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:26:50,983 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:26:50,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:50,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:50,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:50,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:50,984 INFO L85 PathProgramCache]: Analyzing trace with hash -104723753, now seen corresponding path program 1 times [2023-08-30 08:26:50,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:50,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976719336] [2023-08-30 08:26:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:50,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:51,009 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 08:26:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976719336] [2023-08-30 08:26:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976719336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:51,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:51,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283472140] [2023-08-30 08:26:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:51,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:26:51,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:51,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:26:51,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:51,344 INFO L130 PetriNetUnfolder]: 1931/3617 cut-off events. [2023-08-30 08:26:51,344 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 08:26:51,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 3617 events. 1931/3617 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23884 event pairs, 689 based on Foata normal form. 0/2596 useless extension candidates. Maximal degree in co-relation 6132. Up to 2397 conditions per place. [2023-08-30 08:26:51,359 INFO L137 encePairwiseOnDemand]: 395/410 looper letters, 105 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2023-08-30 08:26:51,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 550 flow [2023-08-30 08:26:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:26:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:26:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1111 transitions. [2023-08-30 08:26:51,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419512195121952 [2023-08-30 08:26:51,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1111 transitions. [2023-08-30 08:26:51,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1111 transitions. [2023-08-30 08:26:51,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:51,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1111 transitions. [2023-08-30 08:26:51,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,367 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 410.0) internal successors, (2460), 6 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,367 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 212 flow. Second operand 5 states and 1111 transitions. [2023-08-30 08:26:51,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 550 flow [2023-08-30 08:26:51,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 548 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:51,370 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 266 flow [2023-08-30 08:26:51,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2023-08-30 08:26:51,371 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-08-30 08:26:51,371 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 266 flow [2023-08-30 08:26:51,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.5) internal successors, (794), 4 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:51,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:51,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 08:26:51,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:51,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:51,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1121630105, now seen corresponding path program 1 times [2023-08-30 08:26:51,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:51,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958977737] [2023-08-30 08:26:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:51,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:51,423 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 08:26:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958977737] [2023-08-30 08:26:51,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958977737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:51,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:51,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:26:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799751834] [2023-08-30 08:26:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:51,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:51,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 410 [2023-08-30 08:26:51,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:51,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 410 [2023-08-30 08:26:51,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:51,748 INFO L130 PetriNetUnfolder]: 2391/4277 cut-off events. [2023-08-30 08:26:51,748 INFO L131 PetriNetUnfolder]: For 925/935 co-relation queries the response was YES. [2023-08-30 08:26:51,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8829 conditions, 4277 events. 2391/4277 cut-off events. For 925/935 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 29528 event pairs, 1859 based on Foata normal form. 302/3767 useless extension candidates. Maximal degree in co-relation 6144. Up to 3787 conditions per place. [2023-08-30 08:26:51,766 INFO L137 encePairwiseOnDemand]: 403/410 looper letters, 62 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 08:26:51,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 380 flow [2023-08-30 08:26:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-30 08:26:51,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170731707317073 [2023-08-30 08:26:51,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-30 08:26:51,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-30 08:26:51,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-30 08:26:51,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,771 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 266 flow. Second operand 3 states and 636 transitions. [2023-08-30 08:26:51,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 380 flow [2023-08-30 08:26:51,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:51,775 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 256 flow [2023-08-30 08:26:51,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-30 08:26:51,776 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-08-30 08:26:51,776 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 256 flow [2023-08-30 08:26:51,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:51,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:51,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 08:26:51,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:51,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash -410793662, now seen corresponding path program 1 times [2023-08-30 08:26:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567003604] [2023-08-30 08:26:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:51,820 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 08:26:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567003604] [2023-08-30 08:26:51,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567003604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:51,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:26:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220886402] [2023-08-30 08:26:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:51,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:26:51,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:51,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:51,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:26:51,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:52,219 INFO L130 PetriNetUnfolder]: 2769/5103 cut-off events. [2023-08-30 08:26:52,219 INFO L131 PetriNetUnfolder]: For 1140/1150 co-relation queries the response was YES. [2023-08-30 08:26:52,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10444 conditions, 5103 events. 2769/5103 cut-off events. For 1140/1150 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 36391 event pairs, 755 based on Foata normal form. 170/4507 useless extension candidates. Maximal degree in co-relation 10430. Up to 3993 conditions per place. [2023-08-30 08:26:52,256 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 84 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2023-08-30 08:26:52,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 507 flow [2023-08-30 08:26:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 08:26:52,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2023-08-30 08:26:52,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 08:26:52,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 08:26:52,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:52,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 08:26:52,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,265 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 256 flow. Second operand 3 states and 654 transitions. [2023-08-30 08:26:52,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 507 flow [2023-08-30 08:26:52,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 116 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:52,268 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 288 flow [2023-08-30 08:26:52,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-30 08:26:52,269 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:26:52,269 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 288 flow [2023-08-30 08:26:52,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:52,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:52,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 08:26:52,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:52,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:52,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478144, now seen corresponding path program 1 times [2023-08-30 08:26:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:52,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550829904] [2023-08-30 08:26:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:52,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:52,303 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 08:26:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550829904] [2023-08-30 08:26:52,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550829904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:52,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:52,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146214615] [2023-08-30 08:26:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:52,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:52,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:52,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:52,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:52,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:52,664 INFO L130 PetriNetUnfolder]: 2080/4294 cut-off events. [2023-08-30 08:26:52,664 INFO L131 PetriNetUnfolder]: For 910/920 co-relation queries the response was YES. [2023-08-30 08:26:52,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 4294 events. 2080/4294 cut-off events. For 910/920 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31085 event pairs, 1449 based on Foata normal form. 10/3598 useless extension candidates. Maximal degree in co-relation 8652. Up to 3022 conditions per place. [2023-08-30 08:26:52,682 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 75 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-30 08:26:52,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 511 flow [2023-08-30 08:26:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-30 08:26:52,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536585365853659 [2023-08-30 08:26:52,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-30 08:26:52,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-30 08:26:52,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:52,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-30 08:26:52,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,688 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 288 flow. Second operand 3 states and 681 transitions. [2023-08-30 08:26:52,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 511 flow [2023-08-30 08:26:52,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:52,690 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 293 flow [2023-08-30 08:26:52,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2023-08-30 08:26:52,691 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-08-30 08:26:52,691 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 293 flow [2023-08-30 08:26:52,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:52,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:52,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 08:26:52,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:52,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1240478172, now seen corresponding path program 1 times [2023-08-30 08:26:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:52,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223453072] [2023-08-30 08:26:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:52,728 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 08:26:52,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:52,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223453072] [2023-08-30 08:26:52,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223453072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:52,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257229762] [2023-08-30 08:26:52,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:52,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:52,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:52,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:52,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:52,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:52,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:53,104 INFO L130 PetriNetUnfolder]: 2005/4147 cut-off events. [2023-08-30 08:26:53,104 INFO L131 PetriNetUnfolder]: For 1019/1029 co-relation queries the response was YES. [2023-08-30 08:26:53,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 4147 events. 2005/4147 cut-off events. For 1019/1029 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29806 event pairs, 1384 based on Foata normal form. 10/3513 useless extension candidates. Maximal degree in co-relation 8545. Up to 2901 conditions per place. [2023-08-30 08:26:53,123 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 75 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-30 08:26:53,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 120 transitions, 512 flow [2023-08-30 08:26:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-08-30 08:26:53,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2023-08-30 08:26:53,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-08-30 08:26:53,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-08-30 08:26:53,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:53,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-08-30 08:26:53,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,129 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 293 flow. Second operand 3 states and 680 transitions. [2023-08-30 08:26:53,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 120 transitions, 512 flow [2023-08-30 08:26:53,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:53,132 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 289 flow [2023-08-30 08:26:53,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2023-08-30 08:26:53,133 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-08-30 08:26:53,133 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 289 flow [2023-08-30 08:26:53,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:53,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 08:26:53,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:53,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash 199884839, now seen corresponding path program 1 times [2023-08-30 08:26:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275116457] [2023-08-30 08:26:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:53,192 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 08:26:53,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:53,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275116457] [2023-08-30 08:26:53,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275116457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:53,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:53,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:53,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896169287] [2023-08-30 08:26:53,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:53,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:53,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:53,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:53,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:26:53,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:53,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:53,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:26:53,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:53,982 INFO L130 PetriNetUnfolder]: 4089/7201 cut-off events. [2023-08-30 08:26:53,982 INFO L131 PetriNetUnfolder]: For 2141/2175 co-relation queries the response was YES. [2023-08-30 08:26:53,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16003 conditions, 7201 events. 4089/7201 cut-off events. For 2141/2175 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 51374 event pairs, 863 based on Foata normal form. 10/6198 useless extension candidates. Maximal degree in co-relation 15987. Up to 2650 conditions per place. [2023-08-30 08:26:54,009 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 203 selfloop transitions, 16 changer transitions 0/247 dead transitions. [2023-08-30 08:26:54,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 247 transitions, 1175 flow [2023-08-30 08:26:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:26:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:26:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1607 transitions. [2023-08-30 08:26:54,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899390243902439 [2023-08-30 08:26:54,012 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1607 transitions. [2023-08-30 08:26:54,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1607 transitions. [2023-08-30 08:26:54,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:54,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1607 transitions. [2023-08-30 08:26:54,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.875) internal successors, (1607), 8 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,019 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,019 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 289 flow. Second operand 8 states and 1607 transitions. [2023-08-30 08:26:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 247 transitions, 1175 flow [2023-08-30 08:26:54,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 247 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:54,024 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 375 flow [2023-08-30 08:26:54,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-30 08:26:54,025 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 11 predicate places. [2023-08-30 08:26:54,025 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 375 flow [2023-08-30 08:26:54,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:54,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 08:26:54,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:54,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 199884838, now seen corresponding path program 1 times [2023-08-30 08:26:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:54,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378337827] [2023-08-30 08:26:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:54,082 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 08:26:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378337827] [2023-08-30 08:26:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378337827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:54,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:54,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:54,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574188861] [2023-08-30 08:26:54,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:54,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:54,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:54,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:54,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:26:54,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:54,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:26:54,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:54,475 INFO L130 PetriNetUnfolder]: 2892/5574 cut-off events. [2023-08-30 08:26:54,475 INFO L131 PetriNetUnfolder]: For 1987/1997 co-relation queries the response was YES. [2023-08-30 08:26:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12500 conditions, 5574 events. 2892/5574 cut-off events. For 1987/1997 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 40451 event pairs, 991 based on Foata normal form. 106/4903 useless extension candidates. Maximal degree in co-relation 12479. Up to 3501 conditions per place. [2023-08-30 08:26:54,499 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 84 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-30 08:26:54,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 608 flow [2023-08-30 08:26:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-08-30 08:26:54,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540650406504065 [2023-08-30 08:26:54,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-08-30 08:26:54,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-08-30 08:26:54,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:54,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-08-30 08:26:54,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,504 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 375 flow. Second operand 3 states and 665 transitions. [2023-08-30 08:26:54,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 608 flow [2023-08-30 08:26:54,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 130 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:54,509 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 374 flow [2023-08-30 08:26:54,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2023-08-30 08:26:54,509 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:26:54,509 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 374 flow [2023-08-30 08:26:54,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:54,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:54,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 08:26:54,510 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:54,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002933, now seen corresponding path program 1 times [2023-08-30 08:26:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:54,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755410089] [2023-08-30 08:26:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:54,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:54,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:54,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755410089] [2023-08-30 08:26:54,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755410089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:54,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:54,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965766618] [2023-08-30 08:26:54,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:54,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:54,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:54,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:54,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:54,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:54,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:54,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:54,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:55,023 INFO L130 PetriNetUnfolder]: 2873/5599 cut-off events. [2023-08-30 08:26:55,023 INFO L131 PetriNetUnfolder]: For 2085/2095 co-relation queries the response was YES. [2023-08-30 08:26:55,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 5599 events. 2873/5599 cut-off events. For 2085/2095 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 40802 event pairs, 1950 based on Foata normal form. 10/4879 useless extension candidates. Maximal degree in co-relation 12667. Up to 4197 conditions per place. [2023-08-30 08:26:55,052 INFO L137 encePairwiseOnDemand]: 404/410 looper letters, 84 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2023-08-30 08:26:55,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 133 transitions, 675 flow [2023-08-30 08:26:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2023-08-30 08:26:55,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479674796747968 [2023-08-30 08:26:55,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2023-08-30 08:26:55,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2023-08-30 08:26:55,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:55,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2023-08-30 08:26:55,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,058 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 374 flow. Second operand 3 states and 674 transitions. [2023-08-30 08:26:55,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 133 transitions, 675 flow [2023-08-30 08:26:55,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 675 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:55,063 INFO L231 Difference]: Finished difference. Result has 104 places, 103 transitions, 382 flow [2023-08-30 08:26:55,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=104, PETRI_TRANSITIONS=103} [2023-08-30 08:26:55,063 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2023-08-30 08:26:55,063 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 103 transitions, 382 flow [2023-08-30 08:26:55,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:55,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 08:26:55,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:55,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1635002935, now seen corresponding path program 1 times [2023-08-30 08:26:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:55,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356178402] [2023-08-30 08:26:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:55,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:55,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:55,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356178402] [2023-08-30 08:26:55,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356178402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:55,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:55,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258912146] [2023-08-30 08:26:55,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:55,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 410 [2023-08-30 08:26:55,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 103 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:55,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 410 [2023-08-30 08:26:55,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:55,560 INFO L130 PetriNetUnfolder]: 2754/5402 cut-off events. [2023-08-30 08:26:55,561 INFO L131 PetriNetUnfolder]: For 2149/2159 co-relation queries the response was YES. [2023-08-30 08:26:55,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12521 conditions, 5402 events. 2754/5402 cut-off events. For 2149/2159 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 39150 event pairs, 1857 based on Foata normal form. 10/4770 useless extension candidates. Maximal degree in co-relation 12499. Up to 4000 conditions per place. [2023-08-30 08:26:55,581 INFO L137 encePairwiseOnDemand]: 405/410 looper letters, 84 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2023-08-30 08:26:55,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 132 transitions, 679 flow [2023-08-30 08:26:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-08-30 08:26:55,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471544715447154 [2023-08-30 08:26:55,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-08-30 08:26:55,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-08-30 08:26:55,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:55,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-08-30 08:26:55,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,595 INFO L175 Difference]: Start difference. First operand has 104 places, 103 transitions, 382 flow. Second operand 3 states and 673 transitions. [2023-08-30 08:26:55,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 132 transitions, 679 flow [2023-08-30 08:26:55,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 671 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:55,600 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 378 flow [2023-08-30 08:26:55,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-08-30 08:26:55,601 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2023-08-30 08:26:55,601 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 378 flow [2023-08-30 08:26:55,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:55,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:55,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 08:26:55,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:55,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:55,602 INFO L85 PathProgramCache]: Analyzing trace with hash 854518012, now seen corresponding path program 1 times [2023-08-30 08:26:55,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:55,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802349873] [2023-08-30 08:26:55,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:55,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:55,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:55,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802349873] [2023-08-30 08:26:55,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802349873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:26:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240814817] [2023-08-30 08:26:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:55,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:26:55,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:55,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:26:55,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:26:55,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:26:55,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:55,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:55,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:26:55,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:56,663 INFO L130 PetriNetUnfolder]: 5826/10024 cut-off events. [2023-08-30 08:26:56,663 INFO L131 PetriNetUnfolder]: For 4507/4543 co-relation queries the response was YES. [2023-08-30 08:26:56,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24509 conditions, 10024 events. 5826/10024 cut-off events. For 4507/4543 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 72007 event pairs, 1536 based on Foata normal form. 10/9014 useless extension candidates. Maximal degree in co-relation 24487. Up to 3870 conditions per place. [2023-08-30 08:26:56,700 INFO L137 encePairwiseOnDemand]: 398/410 looper letters, 220 selfloop transitions, 18 changer transitions 0/267 dead transitions. [2023-08-30 08:26:56,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 267 transitions, 1516 flow [2023-08-30 08:26:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:26:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:26:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1590 transitions. [2023-08-30 08:26:56,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2023-08-30 08:26:56,703 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1590 transitions. [2023-08-30 08:26:56,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1590 transitions. [2023-08-30 08:26:56,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:56,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1590 transitions. [2023-08-30 08:26:56,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 198.75) internal successors, (1590), 8 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,709 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,710 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 378 flow. Second operand 8 states and 1590 transitions. [2023-08-30 08:26:56,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 267 transitions, 1516 flow [2023-08-30 08:26:56,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 267 transitions, 1502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:26:56,718 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 474 flow [2023-08-30 08:26:56,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=474, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2023-08-30 08:26:56,719 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 21 predicate places. [2023-08-30 08:26:56,719 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 474 flow [2023-08-30 08:26:56,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:56,719 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 08:26:56,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:56,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 854518013, now seen corresponding path program 1 times [2023-08-30 08:26:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032789172] [2023-08-30 08:26:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:56,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:56,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032789172] [2023-08-30 08:26:56,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032789172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:56,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:56,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:56,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096813382] [2023-08-30 08:26:56,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:56,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:56,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 410 [2023-08-30 08:26:56,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:56,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:56,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 410 [2023-08-30 08:26:56,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:57,316 INFO L130 PetriNetUnfolder]: 4161/7847 cut-off events. [2023-08-30 08:26:57,317 INFO L131 PetriNetUnfolder]: For 4337/4349 co-relation queries the response was YES. [2023-08-30 08:26:57,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19478 conditions, 7847 events. 4161/7847 cut-off events. For 4337/4349 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56785 event pairs, 1340 based on Foata normal form. 148/7309 useless extension candidates. Maximal degree in co-relation 19451. Up to 5149 conditions per place. [2023-08-30 08:26:57,347 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 94 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2023-08-30 08:26:57,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 791 flow [2023-08-30 08:26:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-30 08:26:57,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349593495934959 [2023-08-30 08:26:57,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-30 08:26:57,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-30 08:26:57,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:57,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-30 08:26:57,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:57,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:57,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:57,351 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 474 flow. Second operand 3 states and 658 transitions. [2023-08-30 08:26:57,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 791 flow [2023-08-30 08:26:57,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 143 transitions, 791 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:57,360 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 478 flow [2023-08-30 08:26:57,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2023-08-30 08:26:57,360 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 23 predicate places. [2023-08-30 08:26:57,360 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 478 flow [2023-08-30 08:26:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:57,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:57,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 08:26:57,361 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:57,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:57,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1293225098, now seen corresponding path program 1 times [2023-08-30 08:26:57,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:57,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176598386] [2023-08-30 08:26:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:57,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:26:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176598386] [2023-08-30 08:26:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176598386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938329825] [2023-08-30 08:26:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:57,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:57,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 410 [2023-08-30 08:26:57,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:57,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:57,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 410 [2023-08-30 08:26:57,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:58,014 INFO L130 PetriNetUnfolder]: 3874/7244 cut-off events. [2023-08-30 08:26:58,014 INFO L131 PetriNetUnfolder]: For 4390/4402 co-relation queries the response was YES. [2023-08-30 08:26:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18360 conditions, 7244 events. 3874/7244 cut-off events. For 4390/4402 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 52115 event pairs, 2566 based on Foata normal form. 146/6702 useless extension candidates. Maximal degree in co-relation 18332. Up to 5633 conditions per place. [2023-08-30 08:26:58,046 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 90 selfloop transitions, 2 changer transitions 1/140 dead transitions. [2023-08-30 08:26:58,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 140 transitions, 778 flow [2023-08-30 08:26:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-08-30 08:26:58,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487804878048781 [2023-08-30 08:26:58,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-08-30 08:26:58,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-08-30 08:26:58,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:58,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-08-30 08:26:58,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,052 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 478 flow. Second operand 3 states and 675 transitions. [2023-08-30 08:26:58,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 140 transitions, 778 flow [2023-08-30 08:26:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 140 transitions, 778 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:26:58,061 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 480 flow [2023-08-30 08:26:58,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2023-08-30 08:26:58,062 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 25 predicate places. [2023-08-30 08:26:58,062 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 480 flow [2023-08-30 08:26:58,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:58,062 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:58,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 08:26:58,063 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:58,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1352162165, now seen corresponding path program 1 times [2023-08-30 08:26:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420459805] [2023-08-30 08:26:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:58,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:58,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:58,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420459805] [2023-08-30 08:26:58,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420459805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:58,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:58,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:26:58,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910183289] [2023-08-30 08:26:58,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:58,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:26:58,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:58,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:26:58,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:26:58,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 410 [2023-08-30 08:26:58,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:58,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 410 [2023-08-30 08:26:58,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:58,789 INFO L130 PetriNetUnfolder]: 3739/7143 cut-off events. [2023-08-30 08:26:58,789 INFO L131 PetriNetUnfolder]: For 4626/4644 co-relation queries the response was YES. [2023-08-30 08:26:58,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18223 conditions, 7143 events. 3739/7143 cut-off events. For 4626/4644 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 51713 event pairs, 2534 based on Foata normal form. 158/6673 useless extension candidates. Maximal degree in co-relation 18194. Up to 5527 conditions per place. [2023-08-30 08:26:58,831 INFO L137 encePairwiseOnDemand]: 408/410 looper letters, 87 selfloop transitions, 2 changer transitions 3/139 dead transitions. [2023-08-30 08:26:58,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 139 transitions, 789 flow [2023-08-30 08:26:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:26:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:26:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-30 08:26:58,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463414634146342 [2023-08-30 08:26:58,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-30 08:26:58,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-30 08:26:58,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:58,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-30 08:26:58,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 410.0) internal successors, (1640), 4 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,836 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 480 flow. Second operand 3 states and 672 transitions. [2023-08-30 08:26:58,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 139 transitions, 789 flow [2023-08-30 08:26:58,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 139 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:58,848 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 480 flow [2023-08-30 08:26:58,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2023-08-30 08:26:58,848 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 26 predicate places. [2023-08-30 08:26:58,848 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 480 flow [2023-08-30 08:26:58,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:58,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:58,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 08:26:58,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:58,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash 818509966, now seen corresponding path program 1 times [2023-08-30 08:26:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377473957] [2023-08-30 08:26:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377473957] [2023-08-30 08:26:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377473957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:26:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802320063] [2023-08-30 08:26:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:26:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:58,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:26:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:26:58,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 410 [2023-08-30 08:26:58,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 480 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:58,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:26:58,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 410 [2023-08-30 08:26:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:26:59,749 INFO L130 PetriNetUnfolder]: 5815/10653 cut-off events. [2023-08-30 08:26:59,749 INFO L131 PetriNetUnfolder]: For 7000/7158 co-relation queries the response was YES. [2023-08-30 08:26:59,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27809 conditions, 10653 events. 5815/10653 cut-off events. For 7000/7158 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 78445 event pairs, 835 based on Foata normal form. 402/10395 useless extension candidates. Maximal degree in co-relation 27780. Up to 7534 conditions per place. [2023-08-30 08:26:59,798 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 132 selfloop transitions, 9 changer transitions 0/172 dead transitions. [2023-08-30 08:26:59,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1013 flow [2023-08-30 08:26:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:26:59,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:26:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 874 transitions. [2023-08-30 08:26:59,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5329268292682927 [2023-08-30 08:26:59,800 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 874 transitions. [2023-08-30 08:26:59,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 874 transitions. [2023-08-30 08:26:59,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:26:59,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 874 transitions. [2023-08-30 08:26:59,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:59,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:59,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:59,804 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 480 flow. Second operand 4 states and 874 transitions. [2023-08-30 08:26:59,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1013 flow [2023-08-30 08:26:59,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:26:59,818 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 532 flow [2023-08-30 08:26:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2023-08-30 08:26:59,819 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2023-08-30 08:26:59,819 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 532 flow [2023-08-30 08:26:59,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:26:59,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:26:59,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:26:59,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 08:26:59,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:26:59,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:26:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1799240676, now seen corresponding path program 1 times [2023-08-30 08:26:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:26:59,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065776535] [2023-08-30 08:26:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:26:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:26:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:26:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:26:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:26:59,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065776535] [2023-08-30 08:26:59,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065776535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:26:59,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:26:59,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:26:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161113082] [2023-08-30 08:26:59,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:26:59,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:26:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:26:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:26:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:27:00,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:27:00,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:00,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:00,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:27:00,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:01,302 INFO L130 PetriNetUnfolder]: 7657/13709 cut-off events. [2023-08-30 08:27:01,302 INFO L131 PetriNetUnfolder]: For 11286/11622 co-relation queries the response was YES. [2023-08-30 08:27:01,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37593 conditions, 13709 events. 7657/13709 cut-off events. For 11286/11622 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 102422 event pairs, 740 based on Foata normal form. 120/12911 useless extension candidates. Maximal degree in co-relation 37562. Up to 5871 conditions per place. [2023-08-30 08:27:01,369 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 293 selfloop transitions, 31 changer transitions 0/353 dead transitions. [2023-08-30 08:27:01,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 353 transitions, 2210 flow [2023-08-30 08:27:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:27:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:27:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2360 transitions. [2023-08-30 08:27:01,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 08:27:01,373 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2360 transitions. [2023-08-30 08:27:01,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2360 transitions. [2023-08-30 08:27:01,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:01,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2360 transitions. [2023-08-30 08:27:01,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.66666666666666) internal successors, (2360), 12 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:01,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:01,380 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:01,380 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 532 flow. Second operand 12 states and 2360 transitions. [2023-08-30 08:27:01,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 353 transitions, 2210 flow [2023-08-30 08:27:01,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 353 transitions, 2187 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 08:27:01,398 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 691 flow [2023-08-30 08:27:01,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=691, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2023-08-30 08:27:01,398 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2023-08-30 08:27:01,398 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 691 flow [2023-08-30 08:27:01,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:01,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:01,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:01,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 08:27:01,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:01,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1931529526, now seen corresponding path program 1 times [2023-08-30 08:27:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208713734] [2023-08-30 08:27:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:01,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:01,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:01,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208713734] [2023-08-30 08:27:01,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208713734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:01,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:01,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 08:27:01,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358924966] [2023-08-30 08:27:01,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:01,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 08:27:01,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:01,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 08:27:01,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 08:27:01,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 410 [2023-08-30 08:27:01,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 691 flow. Second operand has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:01,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:01,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 410 [2023-08-30 08:27:01,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:03,231 INFO L130 PetriNetUnfolder]: 9820/17266 cut-off events. [2023-08-30 08:27:03,231 INFO L131 PetriNetUnfolder]: For 19298/19464 co-relation queries the response was YES. [2023-08-30 08:27:03,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49992 conditions, 17266 events. 9820/17266 cut-off events. For 19298/19464 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 130739 event pairs, 1131 based on Foata normal form. 130/16203 useless extension candidates. Maximal degree in co-relation 49958. Up to 7758 conditions per place. [2023-08-30 08:27:03,344 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 307 selfloop transitions, 34 changer transitions 0/371 dead transitions. [2023-08-30 08:27:03,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 371 transitions, 2569 flow [2023-08-30 08:27:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 08:27:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 08:27:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2366 transitions. [2023-08-30 08:27:03,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48089430894308943 [2023-08-30 08:27:03,347 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2366 transitions. [2023-08-30 08:27:03,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2366 transitions. [2023-08-30 08:27:03,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:03,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2366 transitions. [2023-08-30 08:27:03,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 197.16666666666666) internal successors, (2366), 12 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:03,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:03,355 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 410.0) internal successors, (5330), 13 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:03,355 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 691 flow. Second operand 12 states and 2366 transitions. [2023-08-30 08:27:03,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 371 transitions, 2569 flow [2023-08-30 08:27:03,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 371 transitions, 2536 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 08:27:03,402 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 857 flow [2023-08-30 08:27:03,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=857, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2023-08-30 08:27:03,403 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 51 predicate places. [2023-08-30 08:27:03,403 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 857 flow [2023-08-30 08:27:03,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.14285714285714) internal successors, (1240), 7 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:03,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:03,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:03,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 08:27:03,404 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:03,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1325404433, now seen corresponding path program 1 times [2023-08-30 08:27:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:03,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063768329] [2023-08-30 08:27:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 08:27:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063768329] [2023-08-30 08:27:03,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063768329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:03,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:03,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:27:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407930570] [2023-08-30 08:27:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:27:03,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:27:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:27:03,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 410 [2023-08-30 08:27:03,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 140 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:03,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:03,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 410 [2023-08-30 08:27:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:05,945 INFO L130 PetriNetUnfolder]: 13880/24312 cut-off events. [2023-08-30 08:27:05,945 INFO L131 PetriNetUnfolder]: For 35747/35889 co-relation queries the response was YES. [2023-08-30 08:27:06,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73191 conditions, 24312 events. 13880/24312 cut-off events. For 35747/35889 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 192635 event pairs, 2757 based on Foata normal form. 1058/23668 useless extension candidates. Maximal degree in co-relation 73153. Up to 12366 conditions per place. [2023-08-30 08:27:06,123 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 219 selfloop transitions, 27 changer transitions 0/277 dead transitions. [2023-08-30 08:27:06,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 277 transitions, 2190 flow [2023-08-30 08:27:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 08:27:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 08:27:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 893 transitions. [2023-08-30 08:27:06,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445121951219513 [2023-08-30 08:27:06,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 893 transitions. [2023-08-30 08:27:06,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 893 transitions. [2023-08-30 08:27:06,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:06,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 893 transitions. [2023-08-30 08:27:06,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,128 INFO L175 Difference]: Start difference. First operand has 142 places, 140 transitions, 857 flow. Second operand 4 states and 893 transitions. [2023-08-30 08:27:06,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 277 transitions, 2190 flow [2023-08-30 08:27:06,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 2179 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 08:27:06,250 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 1013 flow [2023-08-30 08:27:06,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1013, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2023-08-30 08:27:06,251 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 51 predicate places. [2023-08-30 08:27:06,251 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 1013 flow [2023-08-30 08:27:06,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:06,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:06,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 08:27:06,252 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:06,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1117930030, now seen corresponding path program 1 times [2023-08-30 08:27:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629750754] [2023-08-30 08:27:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629750754] [2023-08-30 08:27:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629750754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654739603] [2023-08-30 08:27:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:06,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:06,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:06,313 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 08:27:06,315 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 08:27:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:06,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 08:27:06,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:06,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654739603] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:06,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 08:27:06,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486113742] [2023-08-30 08:27:06,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:06,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 08:27:06,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 08:27:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-30 08:27:06,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 410 [2023-08-30 08:27:06,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 1013 flow. Second operand has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:06,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:06,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 410 [2023-08-30 08:27:06,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:12,886 INFO L130 PetriNetUnfolder]: 34509/58521 cut-off events. [2023-08-30 08:27:12,886 INFO L131 PetriNetUnfolder]: For 94832/95000 co-relation queries the response was YES. [2023-08-30 08:27:13,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177903 conditions, 58521 events. 34509/58521 cut-off events. For 94832/95000 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 473243 event pairs, 1057 based on Foata normal form. 1460/55907 useless extension candidates. Maximal degree in co-relation 177862. Up to 18842 conditions per place. [2023-08-30 08:27:13,347 INFO L137 encePairwiseOnDemand]: 399/410 looper letters, 349 selfloop transitions, 35 changer transitions 0/411 dead transitions. [2023-08-30 08:27:13,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 411 transitions, 3131 flow [2023-08-30 08:27:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:27:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:27:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1735 transitions. [2023-08-30 08:27:13,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289634146341463 [2023-08-30 08:27:13,350 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1735 transitions. [2023-08-30 08:27:13,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1735 transitions. [2023-08-30 08:27:13,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:13,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1735 transitions. [2023-08-30 08:27:13,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 216.875) internal successors, (1735), 8 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:13,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:13,354 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 410.0) internal successors, (3690), 9 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:13,354 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 1013 flow. Second operand 8 states and 1735 transitions. [2023-08-30 08:27:13,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 411 transitions, 3131 flow [2023-08-30 08:27:13,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 411 transitions, 3095 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:27:13,699 INFO L231 Difference]: Finished difference. Result has 147 places, 156 transitions, 1145 flow [2023-08-30 08:27:13,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=147, PETRI_TRANSITIONS=156} [2023-08-30 08:27:13,700 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 56 predicate places. [2023-08-30 08:27:13,700 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 156 transitions, 1145 flow [2023-08-30 08:27:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:13,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:13,700 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:13,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 08:27:13,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 08:27:13,905 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:13,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash 751907127, now seen corresponding path program 1 times [2023-08-30 08:27:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644397907] [2023-08-30 08:27:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:14,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:14,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644397907] [2023-08-30 08:27:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644397907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:14,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848592967] [2023-08-30 08:27:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:14,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:14,010 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 08:27:14,012 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 08:27:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:14,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:27:14,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:14,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848592967] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:14,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:27:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119683737] [2023-08-30 08:27:14,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:14,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:27:14,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:27:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:27:14,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:27:14,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 156 transitions, 1145 flow. Second operand has 14 states, 14 states have (on average 171.71428571428572) internal successors, (2404), 14 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:14,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:14,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:27:14,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:23,410 INFO L130 PetriNetUnfolder]: 40941/68243 cut-off events. [2023-08-30 08:27:23,410 INFO L131 PetriNetUnfolder]: For 111839/111849 co-relation queries the response was YES. [2023-08-30 08:27:23,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211618 conditions, 68243 events. 40941/68243 cut-off events. For 111839/111849 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 555020 event pairs, 959 based on Foata normal form. 608/64226 useless extension candidates. Maximal degree in co-relation 211573. Up to 16752 conditions per place. [2023-08-30 08:27:23,956 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 861 selfloop transitions, 133 changer transitions 64/1080 dead transitions. [2023-08-30 08:27:23,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 1080 transitions, 8164 flow [2023-08-30 08:27:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:27:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:27:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6093 transitions. [2023-08-30 08:27:23,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46440548780487806 [2023-08-30 08:27:23,961 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6093 transitions. [2023-08-30 08:27:23,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6093 transitions. [2023-08-30 08:27:23,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:23,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6093 transitions. [2023-08-30 08:27:23,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 190.40625) internal successors, (6093), 32 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:23,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:23,977 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:23,977 INFO L175 Difference]: Start difference. First operand has 147 places, 156 transitions, 1145 flow. Second operand 32 states and 6093 transitions. [2023-08-30 08:27:23,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 1080 transitions, 8164 flow [2023-08-30 08:27:24,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1080 transitions, 8106 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 08:27:24,663 INFO L231 Difference]: Finished difference. Result has 177 places, 237 transitions, 2130 flow [2023-08-30 08:27:24,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2130, PETRI_PLACES=177, PETRI_TRANSITIONS=237} [2023-08-30 08:27:24,664 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 86 predicate places. [2023-08-30 08:27:24,664 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 237 transitions, 2130 flow [2023-08-30 08:27:24,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.71428571428572) internal successors, (2404), 14 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:24,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:24,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:24,669 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 08:27:24,865 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,SelfDestructingSolverStorable27 [2023-08-30 08:27:24,865 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-30 08:27:24,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash -694326327, now seen corresponding path program 1 times [2023-08-30 08:27:24,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:24,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063496731] [2023-08-30 08:27:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:24,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:24,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:24,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063496731] [2023-08-30 08:27:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063496731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 08:27:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875688377] [2023-08-30 08:27:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:24,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 08:27:24,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 08:27:24,984 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 08:27:24,986 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 08:27:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:25,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 08:27:25,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 08:27:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:25,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 08:27:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 08:27:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875688377] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 08:27:25,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 08:27:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 08:27:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960970814] [2023-08-30 08:27:25,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 08:27:25,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 08:27:25,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 08:27:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-30 08:27:25,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 410 [2023-08-30 08:27:25,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 237 transitions, 2130 flow. Second operand has 14 states, 14 states have (on average 171.57142857142858) internal successors, (2402), 14 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:25,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:25,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 410 [2023-08-30 08:27:25,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:35,268 INFO L130 PetriNetUnfolder]: 44428/73940 cut-off events. [2023-08-30 08:27:35,269 INFO L131 PetriNetUnfolder]: For 151371/151381 co-relation queries the response was YES. [2023-08-30 08:27:35,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239307 conditions, 73940 events. 44428/73940 cut-off events. For 151371/151381 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 607633 event pairs, 1092 based on Foata normal form. 676/69582 useless extension candidates. Maximal degree in co-relation 239259. Up to 17857 conditions per place. [2023-08-30 08:27:35,776 INFO L137 encePairwiseOnDemand]: 397/410 looper letters, 0 selfloop transitions, 0 changer transitions 1187/1187 dead transitions. [2023-08-30 08:27:35,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1187 transitions, 10241 flow [2023-08-30 08:27:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 08:27:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 08:27:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6066 transitions. [2023-08-30 08:27:35,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46234756097560975 [2023-08-30 08:27:35,780 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6066 transitions. [2023-08-30 08:27:35,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6066 transitions. [2023-08-30 08:27:35,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:35,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6066 transitions. [2023-08-30 08:27:35,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 189.5625) internal successors, (6066), 32 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,792 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 410.0) internal successors, (13530), 33 states have internal predecessors, (13530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:35,793 INFO L175 Difference]: Start difference. First operand has 177 places, 237 transitions, 2130 flow. Second operand 32 states and 6066 transitions. [2023-08-30 08:27:35,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1187 transitions, 10241 flow [2023-08-30 08:27:36,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 1187 transitions, 9601 flow, removed 74 selfloop flow, removed 14 redundant places. [2023-08-30 08:27:36,717 INFO L231 Difference]: Finished difference. Result has 193 places, 0 transitions, 0 flow [2023-08-30 08:27:36,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=410, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=0, PETRI_PLACES=193, PETRI_TRANSITIONS=0} [2023-08-30 08:27:36,717 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 102 predicate places. [2023-08-30 08:27:36,717 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 0 transitions, 0 flow [2023-08-30 08:27:36,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.57142857142858) internal successors, (2402), 14 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:36,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-08-30 08:27:36,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-30 08:27:36,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-30 08:27:36,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-30 08:27:36,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-30 08:27:36,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-08-30 08:27:36,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-30 08:27:36,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-30 08:27:36,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-08-30 08:27:36,729 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 08:27:36,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 08:27:36,923 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:36,923 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 08:27:36,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:27:36,940 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:27:36,941 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:27:36,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:27:36,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:27:36,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-08-30 08:27:36,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:27:36,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:27:36,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-08-30 08:27:36,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-08-30 08:27:36,958 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-08-30 08:27:36,958 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:27:36,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-08-30 08:27:36,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-08-30 08:27:40,650 INFO L134 LiptonReduction]: Checked pairs total: 72968 [2023-08-30 08:27:40,651 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-30 08:27:40,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 08:27:40,652 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;@1d1badf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:27:40,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 08:27:40,654 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-08-30 08:27:40,654 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 08:27:40,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:40,654 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 08:27:40,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 08:27:40,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -574457129, now seen corresponding path program 1 times [2023-08-30 08:27:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:40,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127728022] [2023-08-30 08:27:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:27:40,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 08:27:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 08:27:40,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 08:27:40,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 08:27:40,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 08:27:40,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 08:27:40,687 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 08:27:40,687 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 08:27:40,687 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 08:27:40,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 08:27:40,733 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 08:27:40,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:27:40,781 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:27:40,781 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:27:40,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 08:27:40,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:27:40,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-08-30 08:27:40,789 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 08:27:40,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:27:40,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-08-30 08:27:40,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-08-30 08:27:40,832 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-08-30 08:27:40,833 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 08:27:40,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-08-30 08:27:40,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-08-30 08:27:45,676 INFO L134 LiptonReduction]: Checked pairs total: 173976 [2023-08-30 08:27:45,676 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-30 08:27:45,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 08:27:45,677 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;@1d1badf9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 08:27:45,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-30 08:27:45,680 INFO L130 PetriNetUnfolder]: 4/35 cut-off events. [2023-08-30 08:27:45,680 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 08:27:45,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:45,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:45,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:27:45,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash 738447711, now seen corresponding path program 1 times [2023-08-30 08:27:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:45,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473396867] [2023-08-30 08:27:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:45,712 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 08:27:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473396867] [2023-08-30 08:27:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473396867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:45,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:45,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:27:45,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401013725] [2023-08-30 08:27:45,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 08:27:45,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:45,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 08:27:45,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 08:27:45,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 578 [2023-08-30 08:27:45,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 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 08:27:45,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:45,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 578 [2023-08-30 08:27:45,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:27:52,327 INFO L130 PetriNetUnfolder]: 75621/123101 cut-off events. [2023-08-30 08:27:52,327 INFO L131 PetriNetUnfolder]: For 3415/3415 co-relation queries the response was YES. [2023-08-30 08:27:52,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225968 conditions, 123101 events. 75621/123101 cut-off events. For 3415/3415 co-relation queries the response was YES. Maximal size of possible extension queue 3231. Compared 1149690 event pairs, 5649 based on Foata normal form. 0/85858 useless extension candidates. Maximal degree in co-relation 126578. Up to 72729 conditions per place. [2023-08-30 08:27:52,909 INFO L137 encePairwiseOnDemand]: 562/578 looper letters, 228 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2023-08-30 08:27:52,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 293 transitions, 1112 flow [2023-08-30 08:27:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 08:27:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 08:27:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1667 transitions. [2023-08-30 08:27:52,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768166089965397 [2023-08-30 08:27:52,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1667 transitions. [2023-08-30 08:27:52,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1667 transitions. [2023-08-30 08:27:52,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:27:52,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1667 transitions. [2023-08-30 08:27:52,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.4) internal successors, (1667), 5 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:52,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:52,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 578.0) internal successors, (3468), 6 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:52,915 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 309 flow. Second operand 5 states and 1667 transitions. [2023-08-30 08:27:52,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 293 transitions, 1112 flow [2023-08-30 08:27:52,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 1100 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 08:27:52,918 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 359 flow [2023-08-30 08:27:52,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-08-30 08:27:52,919 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 5 predicate places. [2023-08-30 08:27:52,919 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 359 flow [2023-08-30 08:27:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 283.5) internal successors, (1134), 4 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 08:27:52,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:27:52,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:27:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 08:27:52,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:27:52,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:27:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1549207263, now seen corresponding path program 1 times [2023-08-30 08:27:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:27:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688966317] [2023-08-30 08:27:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:27:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:27:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:27:52,939 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 08:27:52,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:27:52,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688966317] [2023-08-30 08:27:52,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688966317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:27:52,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:27:52,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 08:27:52,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443304837] [2023-08-30 08:27:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:27:52,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:27:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:27:52,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:27:52,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:27:52,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 578 [2023-08-30 08:27:52,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:27:52,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:27:52,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 578 [2023-08-30 08:27:52,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:08,372 INFO L130 PetriNetUnfolder]: 168734/238074 cut-off events. [2023-08-30 08:28:08,373 INFO L131 PetriNetUnfolder]: For 30640/34486 co-relation queries the response was YES. [2023-08-30 08:28:09,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490787 conditions, 238074 events. 168734/238074 cut-off events. For 30640/34486 co-relation queries the response was YES. Maximal size of possible extension queue 10899. Compared 1967601 event pairs, 57704 based on Foata normal form. 7655/198537 useless extension candidates. Maximal degree in co-relation 363510. Up to 220588 conditions per place. [2023-08-30 08:28:09,957 INFO L137 encePairwiseOnDemand]: 553/578 looper letters, 129 selfloop transitions, 4 changer transitions 0/175 dead transitions. [2023-08-30 08:28:09,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 175 transitions, 717 flow [2023-08-30 08:28:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 08:28:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 08:28:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 948 transitions. [2023-08-30 08:28:09,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467128027681661 [2023-08-30 08:28:09,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 948 transitions. [2023-08-30 08:28:09,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 948 transitions. [2023-08-30 08:28:09,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:09,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 948 transitions. [2023-08-30 08:28:09,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:09,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:09,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 578.0) internal successors, (2312), 4 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:09,961 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 359 flow. Second operand 3 states and 948 transitions. [2023-08-30 08:28:09,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 175 transitions, 717 flow [2023-08-30 08:28:09,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 175 transitions, 717 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 08:28:09,978 INFO L231 Difference]: Finished difference. Result has 138 places, 146 transitions, 425 flow [2023-08-30 08:28:09,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=425, PETRI_PLACES=138, PETRI_TRANSITIONS=146} [2023-08-30 08:28:09,979 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 8 predicate places. [2023-08-30 08:28:09,979 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 146 transitions, 425 flow [2023-08-30 08:28:09,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:09,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:09,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:09,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 08:28:09,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:28:09,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 928305410, now seen corresponding path program 1 times [2023-08-30 08:28:09,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:09,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906306772] [2023-08-30 08:28:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:09,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:10,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:10,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906306772] [2023-08-30 08:28:10,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906306772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:10,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:10,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 08:28:10,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672577849] [2023-08-30 08:28:10,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:10,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 08:28:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:10,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 08:28:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 08:28:10,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 578 [2023-08-30 08:28:10,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 146 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:10,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:10,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 578 [2023-08-30 08:28:10,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:28:33,815 INFO L130 PetriNetUnfolder]: 245412/346044 cut-off events. [2023-08-30 08:28:33,815 INFO L131 PetriNetUnfolder]: For 79160/104150 co-relation queries the response was YES. [2023-08-30 08:28:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772224 conditions, 346044 events. 245412/346044 cut-off events. For 79160/104150 co-relation queries the response was YES. Maximal size of possible extension queue 14037. Compared 2979735 event pairs, 91900 based on Foata normal form. 3391/279911 useless extension candidates. Maximal degree in co-relation 622234. Up to 228538 conditions per place. [2023-08-30 08:28:36,206 INFO L137 encePairwiseOnDemand]: 567/578 looper letters, 292 selfloop transitions, 10 changer transitions 0/343 dead transitions. [2023-08-30 08:28:36,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 343 transitions, 1557 flow [2023-08-30 08:28:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 08:28:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 08:28:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1855 transitions. [2023-08-30 08:28:36,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348904267589388 [2023-08-30 08:28:36,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1855 transitions. [2023-08-30 08:28:36,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1855 transitions. [2023-08-30 08:28:36,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:28:36,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1855 transitions. [2023-08-30 08:28:36,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 309.1666666666667) internal successors, (1855), 6 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:36,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:36,212 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 578.0) internal successors, (4046), 7 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:36,212 INFO L175 Difference]: Start difference. First operand has 138 places, 146 transitions, 425 flow. Second operand 6 states and 1855 transitions. [2023-08-30 08:28:36,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 343 transitions, 1557 flow [2023-08-30 08:28:36,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 343 transitions, 1551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 08:28:36,278 INFO L231 Difference]: Finished difference. Result has 145 places, 152 transitions, 483 flow [2023-08-30 08:28:36,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=145, PETRI_TRANSITIONS=152} [2023-08-30 08:28:36,279 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 15 predicate places. [2023-08-30 08:28:36,279 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 152 transitions, 483 flow [2023-08-30 08:28:36,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 261.6) internal successors, (1308), 5 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:36,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:28:36,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:28:36,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 08:28:36,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:28:36,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:28:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1287301109, now seen corresponding path program 1 times [2023-08-30 08:28:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:28:36,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727703919] [2023-08-30 08:28:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:28:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:28:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:28:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:28:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:28:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727703919] [2023-08-30 08:28:36,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727703919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:28:36,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:28:36,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 08:28:36,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209942564] [2023-08-30 08:28:36,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:28:36,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 08:28:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:28:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 08:28:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 08:28:36,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 578 [2023-08-30 08:28:36,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 152 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:28:36,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:28:36,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 578 [2023-08-30 08:28:36,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 08:29:02,455 INFO L130 PetriNetUnfolder]: 245388/347240 cut-off events. [2023-08-30 08:29:02,455 INFO L131 PetriNetUnfolder]: For 95898/110572 co-relation queries the response was YES. [2023-08-30 08:29:03,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797218 conditions, 347240 events. 245388/347240 cut-off events. For 95898/110572 co-relation queries the response was YES. Maximal size of possible extension queue 13491. Compared 3004869 event pairs, 85059 based on Foata normal form. 3391/282462 useless extension candidates. Maximal degree in co-relation 645208. Up to 120312 conditions per place. [2023-08-30 08:29:05,180 INFO L137 encePairwiseOnDemand]: 566/578 looper letters, 371 selfloop transitions, 17 changer transitions 0/429 dead transitions. [2023-08-30 08:29:05,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 429 transitions, 2005 flow [2023-08-30 08:29:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 08:29:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 08:29:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2401 transitions. [2023-08-30 08:29:05,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192474048442907 [2023-08-30 08:29:05,183 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2401 transitions. [2023-08-30 08:29:05,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2401 transitions. [2023-08-30 08:29:05,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 08:29:05,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2401 transitions. [2023-08-30 08:29:05,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 300.125) internal successors, (2401), 8 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 578.0) internal successors, (5202), 9 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,187 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 578.0) internal successors, (5202), 9 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,188 INFO L175 Difference]: Start difference. First operand has 145 places, 152 transitions, 483 flow. Second operand 8 states and 2401 transitions. [2023-08-30 08:29:05,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 429 transitions, 2005 flow [2023-08-30 08:29:05,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 429 transitions, 1991 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 08:29:05,628 INFO L231 Difference]: Finished difference. Result has 153 places, 157 transitions, 548 flow [2023-08-30 08:29:05,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=578, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=548, PETRI_PLACES=153, PETRI_TRANSITIONS=157} [2023-08-30 08:29:05,628 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 23 predicate places. [2023-08-30 08:29:05,628 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 157 transitions, 548 flow [2023-08-30 08:29:05,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 08:29:05,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 08:29:05,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 08:29:05,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-30 08:29:05,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 08:29:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1287301134, now seen corresponding path program 1 times [2023-08-30 08:29:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 08:29:05,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357321444] [2023-08-30 08:29:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 08:29:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 08:29:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 08:29:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 08:29:05,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 08:29:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357321444] [2023-08-30 08:29:05,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357321444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 08:29:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 08:29:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 08:29:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797390111] [2023-08-30 08:29:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 08:29:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 08:29:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 08:29:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 08:29:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 08:29:05,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 578 [2023-08-30 08:29:05,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 157 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 08:29:05,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 08:29:05,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 578 [2023-08-30 08:29:05,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand