./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/queue_longest.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/queue_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:34:16,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:34:16,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:34:16,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:34:16,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:34:16,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:34:16,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:34:16,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:34:16,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:34:16,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:34:16,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:34:16,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:34:16,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:34:16,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:34:16,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:34:16,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:34:16,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:34:16,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:34:16,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:34:16,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:34:16,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:34:16,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:34:16,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:34:16,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:34:16,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:34:16,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:34:16,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:34:16,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:34:16,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:34:16,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:34:16,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:34:16,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:34:16,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:34:16,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:34:16,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:34:16,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:34:16,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:34:16,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:34:16,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:34:16,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:34:16,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:34:16,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:34:16,572 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:34:16,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:34:16,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:34:16,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:34:16,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:34:16,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:34:16,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:34:16,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:34:16,576 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:34:16,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:34:16,577 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:34:16,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:34:16,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:34:16,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:34:16,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:34:16,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:34:16,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:34:16,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:34:16,579 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:34:16,579 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:34:16,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:34:16,579 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:34:16,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:34:16,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:34:16,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:34:16,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:34:16,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:34:16,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:34:16,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:34:16,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:34:16,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:34:16,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:34:16,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:34:16,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:34:16,582 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:34:16,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:34:16,582 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:34:16,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:34:16,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:34:16,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:34:16,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:34:16,909 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:34:16,911 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:34:16,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-08-30 12:34:18,029 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:34:18,285 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:34:18,285 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-08-30 12:34:18,302 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a46be8a7/42cb7af9972c4428adc899fb573ff4bd/FLAGc6353e1ee [2023-08-30 12:34:18,322 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a46be8a7/42cb7af9972c4428adc899fb573ff4bd [2023-08-30 12:34:18,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:34:18,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:34:18,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:34:18,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:34:18,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:34:18,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:18,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49827e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:18, skipping insertion in model container [2023-08-30 12:34:18,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:34:18" (1/1) ... [2023-08-30 12:34:18,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:34:18,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:34:18,878 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/queue_longest.i[43296,43309] [2023-08-30 12:34:18,884 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/queue_longest.i[43503,43516] [2023-08-30 12:34:18,889 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/queue_longest.i[43783,43796] [2023-08-30 12:34:18,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:34:18,909 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:34:18,952 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/queue_longest.i[43296,43309] [2023-08-30 12:34:18,953 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/queue_longest.i[43503,43516] [2023-08-30 12:34:18,955 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/queue_longest.i[43783,43796] [2023-08-30 12:34:18,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:34:19,035 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:34:19,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19 WrapperNode [2023-08-30 12:34:19,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:34:19,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:34:19,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:34:19,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:34:19,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,124 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 261 [2023-08-30 12:34:19,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:34:19,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:34:19,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:34:19,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:34:19,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:34:19,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:34:19,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:34:19,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:34:19,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (1/1) ... [2023-08-30 12:34:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:34:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:19,229 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 12:34:19,237 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 12:34:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:34:19,257 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:34:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:34:19,259 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:34:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:34:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:34:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:34:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:34:19,259 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:34:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:34:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:34:19,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:34:19,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:34:19,261 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 12:34:19,433 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:34:19,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:34:19,852 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:34:19,861 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:34:19,864 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:34:19,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:19 BoogieIcfgContainer [2023-08-30 12:34:19,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:34:19,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:34:19,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:34:19,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:34:19,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:34:18" (1/3) ... [2023-08-30 12:34:19,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e77c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:34:19, skipping insertion in model container [2023-08-30 12:34:19,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:19" (2/3) ... [2023-08-30 12:34:19,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e77c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:34:19, skipping insertion in model container [2023-08-30 12:34:19,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:19" (3/3) ... [2023-08-30 12:34:19,876 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-08-30 12:34:19,884 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:34:19,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:34:19,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 12:34:19,893 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:34:20,021 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:34:20,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 291 transitions, 598 flow [2023-08-30 12:34:20,180 INFO L130 PetriNetUnfolder]: 15/289 cut-off events. [2023-08-30 12:34:20,180 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:34:20,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 15/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 464 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-30 12:34:20,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 291 transitions, 598 flow [2023-08-30 12:34:20,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 280 transitions, 569 flow [2023-08-30 12:34:20,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:34:20,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 280 transitions, 569 flow [2023-08-30 12:34:20,214 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 280 transitions, 569 flow [2023-08-30 12:34:20,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 280 transitions, 569 flow [2023-08-30 12:34:20,270 INFO L130 PetriNetUnfolder]: 15/280 cut-off events. [2023-08-30 12:34:20,271 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:34:20,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 280 events. 15/280 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 423 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-30 12:34:20,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 22068 [2023-08-30 12:34:28,089 INFO L134 LiptonReduction]: Checked pairs total: 50861 [2023-08-30 12:34:28,090 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-30 12:34:28,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:34:28,106 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;@1ba69813, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:34:28,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 12:34:28,111 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 12:34:28,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:34:28,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:28,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:34:28,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:28,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -471379928, now seen corresponding path program 1 times [2023-08-30 12:34:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851649158] [2023-08-30 12:34:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:28,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:29,461 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 12:34:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:29,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851649158] [2023-08-30 12:34:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851649158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:29,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:29,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:34:29,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723072076] [2023-08-30 12:34:29,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:29,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:34:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:34:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:34:30,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 558 [2023-08-30 12:34:30,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:30,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:30,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 558 [2023-08-30 12:34:30,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:30,778 INFO L130 PetriNetUnfolder]: 3012/4951 cut-off events. [2023-08-30 12:34:30,778 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-30 12:34:30,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9773 conditions, 4951 events. 3012/4951 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26092 event pairs, 2374 based on Foata normal form. 0/3452 useless extension candidates. Maximal degree in co-relation 9558. Up to 4712 conditions per place. [2023-08-30 12:34:30,805 INFO L137 encePairwiseOnDemand]: 548/558 looper letters, 70 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-08-30 12:34:30,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 337 flow [2023-08-30 12:34:30,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1607 transitions. [2023-08-30 12:34:30,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47998805256869775 [2023-08-30 12:34:30,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1607 transitions. [2023-08-30 12:34:30,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1607 transitions. [2023-08-30 12:34:30,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:30,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1607 transitions. [2023-08-30 12:34:30,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.8333333333333) internal successors, (1607), 6 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 12:34:30,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:30,854 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:30,856 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 165 flow. Second operand 6 states and 1607 transitions. [2023-08-30 12:34:30,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 337 flow [2023-08-30 12:34:30,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:34:30,864 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 216 flow [2023-08-30 12:34:30,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-08-30 12:34:30,870 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-08-30 12:34:30,870 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 216 flow [2023-08-30 12:34:30,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:30,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:30,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:30,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:34:30,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:30,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1727417925, now seen corresponding path program 1 times [2023-08-30 12:34:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:30,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18404658] [2023-08-30 12:34:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:31,573 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 12:34:31,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:31,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18404658] [2023-08-30 12:34:31,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18404658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:31,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:31,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320851766] [2023-08-30 12:34:31,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:31,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:31,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:32,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 558 [2023-08-30 12:34:32,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:32,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:32,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 558 [2023-08-30 12:34:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:33,257 INFO L130 PetriNetUnfolder]: 3238/5330 cut-off events. [2023-08-30 12:34:33,258 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2023-08-30 12:34:33,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 5330 events. 3238/5330 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 28893 event pairs, 666 based on Foata normal form. 0/3769 useless extension candidates. Maximal degree in co-relation 9595. Up to 4756 conditions per place. [2023-08-30 12:34:33,289 INFO L137 encePairwiseOnDemand]: 549/558 looper letters, 127 selfloop transitions, 17 changer transitions 0/150 dead transitions. [2023-08-30 12:34:33,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 150 transitions, 654 flow [2023-08-30 12:34:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1648 transitions. [2023-08-30 12:34:33,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922341696535245 [2023-08-30 12:34:33,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1648 transitions. [2023-08-30 12:34:33,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1648 transitions. [2023-08-30 12:34:33,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:33,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1648 transitions. [2023-08-30 12:34:33,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.6666666666667) internal successors, (1648), 6 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:33,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:33,307 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:33,307 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 216 flow. Second operand 6 states and 1648 transitions. [2023-08-30 12:34:33,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 150 transitions, 654 flow [2023-08-30 12:34:33,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 12:34:33,316 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 310 flow [2023-08-30 12:34:33,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2023-08-30 12:34:33,317 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2023-08-30 12:34:33,317 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 310 flow [2023-08-30 12:34:33,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:33,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:33,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:33,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:34:33,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:33,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:33,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1727873625, now seen corresponding path program 2 times [2023-08-30 12:34:33,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:33,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235251535] [2023-08-30 12:34:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:33,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:33,741 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 12:34:33,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235251535] [2023-08-30 12:34:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235251535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:33,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636981802] [2023-08-30 12:34:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:33,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:33,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:34,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 558 [2023-08-30 12:34:34,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:34,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 558 [2023-08-30 12:34:34,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:34,633 INFO L130 PetriNetUnfolder]: 3284/5402 cut-off events. [2023-08-30 12:34:34,633 INFO L131 PetriNetUnfolder]: For 867/867 co-relation queries the response was YES. [2023-08-30 12:34:34,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11756 conditions, 5402 events. 3284/5402 cut-off events. For 867/867 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 29623 event pairs, 745 based on Foata normal form. 0/3847 useless extension candidates. Maximal degree in co-relation 10590. Up to 4706 conditions per place. [2023-08-30 12:34:34,671 INFO L137 encePairwiseOnDemand]: 551/558 looper letters, 119 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2023-08-30 12:34:34,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 141 transitions, 697 flow [2023-08-30 12:34:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:34:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:34:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1380 transitions. [2023-08-30 12:34:34,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2023-08-30 12:34:34,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1380 transitions. [2023-08-30 12:34:34,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1380 transitions. [2023-08-30 12:34:34,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:34,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1380 transitions. [2023-08-30 12:34:34,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 558.0) internal successors, (3348), 6 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 558.0) internal successors, (3348), 6 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,686 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 310 flow. Second operand 5 states and 1380 transitions. [2023-08-30 12:34:34,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 141 transitions, 697 flow [2023-08-30 12:34:34,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 141 transitions, 679 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-30 12:34:34,696 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 376 flow [2023-08-30 12:34:34,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-08-30 12:34:34,699 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2023-08-30 12:34:34,699 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 376 flow [2023-08-30 12:34:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:34,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:34,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:34,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:34:34,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:34,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267153, now seen corresponding path program 1 times [2023-08-30 12:34:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:34,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235405174] [2023-08-30 12:34:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:35,217 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 12:34:35,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:35,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235405174] [2023-08-30 12:34:35,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235405174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:35,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:35,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:34:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078826097] [2023-08-30 12:34:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:35,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:34:35,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:35,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:34:35,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:34:35,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 558 [2023-08-30 12:34:35,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:35,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:35,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 558 [2023-08-30 12:34:35,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:36,421 INFO L130 PetriNetUnfolder]: 3280/5405 cut-off events. [2023-08-30 12:34:36,422 INFO L131 PetriNetUnfolder]: For 1542/1542 co-relation queries the response was YES. [2023-08-30 12:34:36,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11936 conditions, 5405 events. 3280/5405 cut-off events. For 1542/1542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 29264 event pairs, 2430 based on Foata normal form. 0/3849 useless extension candidates. Maximal degree in co-relation 10737. Up to 5147 conditions per place. [2023-08-30 12:34:36,512 INFO L137 encePairwiseOnDemand]: 549/558 looper letters, 87 selfloop transitions, 10 changer transitions 0/103 dead transitions. [2023-08-30 12:34:36,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 103 transitions, 582 flow [2023-08-30 12:34:36,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2023-08-30 12:34:36,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805854241338112 [2023-08-30 12:34:36,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2023-08-30 12:34:36,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2023-08-30 12:34:36,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:36,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2023-08-30 12:34:36,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,542 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,542 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 376 flow. Second operand 6 states and 1609 transitions. [2023-08-30 12:34:36,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 103 transitions, 582 flow [2023-08-30 12:34:36,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 574 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 12:34:36,548 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 408 flow [2023-08-30 12:34:36,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2023-08-30 12:34:36,550 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 26 predicate places. [2023-08-30 12:34:36,550 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 408 flow [2023-08-30 12:34:36,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.8) internal successors, (1279), 5 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:36,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:34:36,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:36,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash 133239830, now seen corresponding path program 1 times [2023-08-30 12:34:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43488524] [2023-08-30 12:34:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:36,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:36,586 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 12:34:36,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43488524] [2023-08-30 12:34:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43488524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:36,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:36,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257887332] [2023-08-30 12:34:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:36,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:36,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 558 [2023-08-30 12:34:36,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:36,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:36,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 558 [2023-08-30 12:34:36,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:37,435 INFO L130 PetriNetUnfolder]: 5225/8793 cut-off events. [2023-08-30 12:34:37,435 INFO L131 PetriNetUnfolder]: For 2381/2418 co-relation queries the response was YES. [2023-08-30 12:34:37,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19046 conditions, 8793 events. 5225/8793 cut-off events. For 2381/2418 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 55682 event pairs, 2351 based on Foata normal form. 37/6603 useless extension candidates. Maximal degree in co-relation 17492. Up to 4846 conditions per place. [2023-08-30 12:34:37,487 INFO L137 encePairwiseOnDemand]: 553/558 looper letters, 159 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-08-30 12:34:37,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 172 transitions, 972 flow [2023-08-30 12:34:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2023-08-30 12:34:37,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692951015531661 [2023-08-30 12:34:37,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2023-08-30 12:34:37,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2023-08-30 12:34:37,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:37,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2023-08-30 12:34:37,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:37,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:37,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:37,500 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 408 flow. Second operand 3 states and 953 transitions. [2023-08-30 12:34:37,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 172 transitions, 972 flow [2023-08-30 12:34:37,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 956 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:34:37,508 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 408 flow [2023-08-30 12:34:37,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2023-08-30 12:34:37,511 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2023-08-30 12:34:37,511 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 408 flow [2023-08-30 12:34:37,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:37,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:37,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:34:37,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:37,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:37,514 INFO L85 PathProgramCache]: Analyzing trace with hash 791606712, now seen corresponding path program 1 times [2023-08-30 12:34:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:37,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182864229] [2023-08-30 12:34:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:38,181 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 12:34:38,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:38,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182864229] [2023-08-30 12:34:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182864229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:38,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:38,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033212670] [2023-08-30 12:34:38,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:39,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 558 [2023-08-30 12:34:39,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:39,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:39,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 558 [2023-08-30 12:34:39,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:40,806 INFO L130 PetriNetUnfolder]: 5786/9558 cut-off events. [2023-08-30 12:34:40,806 INFO L131 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2023-08-30 12:34:40,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22022 conditions, 9558 events. 5786/9558 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 58105 event pairs, 1166 based on Foata normal form. 82/7379 useless extension candidates. Maximal degree in co-relation 13503. Up to 8279 conditions per place. [2023-08-30 12:34:40,855 INFO L137 encePairwiseOnDemand]: 548/558 looper letters, 140 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2023-08-30 12:34:40,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 166 transitions, 928 flow [2023-08-30 12:34:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-08-30 12:34:40,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934289127837515 [2023-08-30 12:34:40,861 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-08-30 12:34:40,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-08-30 12:34:40,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:40,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-08-30 12:34:40,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,871 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,871 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 408 flow. Second operand 6 states and 1652 transitions. [2023-08-30 12:34:40,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 166 transitions, 928 flow [2023-08-30 12:34:40,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 166 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:40,888 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 474 flow [2023-08-30 12:34:40,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2023-08-30 12:34:40,891 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 30 predicate places. [2023-08-30 12:34:40,892 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 474 flow [2023-08-30 12:34:40,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:40,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:40,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:40,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:34:40,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:40,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -926142348, now seen corresponding path program 2 times [2023-08-30 12:34:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:40,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679442193] [2023-08-30 12:34:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:41,414 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 12:34:41,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679442193] [2023-08-30 12:34:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679442193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:41,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:41,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:41,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366943486] [2023-08-30 12:34:41,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:41,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:41,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:41,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 558 [2023-08-30 12:34:41,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 474 flow. Second operand has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:41,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:41,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 558 [2023-08-30 12:34:41,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:42,923 INFO L130 PetriNetUnfolder]: 6018/9970 cut-off events. [2023-08-30 12:34:42,923 INFO L131 PetriNetUnfolder]: For 4056/4056 co-relation queries the response was YES. [2023-08-30 12:34:42,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23656 conditions, 9970 events. 6018/9970 cut-off events. For 4056/4056 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 60785 event pairs, 3130 based on Foata normal form. 82/7767 useless extension candidates. Maximal degree in co-relation 12052. Up to 8136 conditions per place. [2023-08-30 12:34:42,981 INFO L137 encePairwiseOnDemand]: 548/558 looper letters, 141 selfloop transitions, 23 changer transitions 0/170 dead transitions. [2023-08-30 12:34:42,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 170 transitions, 1012 flow [2023-08-30 12:34:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1657 transitions. [2023-08-30 12:34:42,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49492234169653526 [2023-08-30 12:34:42,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1657 transitions. [2023-08-30 12:34:42,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1657 transitions. [2023-08-30 12:34:42,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:42,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1657 transitions. [2023-08-30 12:34:42,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.1666666666667) internal successors, (1657), 6 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,995 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:42,995 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 474 flow. Second operand 6 states and 1657 transitions. [2023-08-30 12:34:42,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 170 transitions, 1012 flow [2023-08-30 12:34:43,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 170 transitions, 980 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 12:34:43,011 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 533 flow [2023-08-30 12:34:43,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=533, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2023-08-30 12:34:43,012 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 32 predicate places. [2023-08-30 12:34:43,012 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 533 flow [2023-08-30 12:34:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:43,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:43,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:34:43,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:43,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash 89131410, now seen corresponding path program 3 times [2023-08-30 12:34:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287087655] [2023-08-30 12:34:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:43,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:43,507 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 12:34:43,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:43,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287087655] [2023-08-30 12:34:43,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287087655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:43,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:43,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392283184] [2023-08-30 12:34:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:43,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:43,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 558 [2023-08-30 12:34:43,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:43,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:43,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 558 [2023-08-30 12:34:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:44,987 INFO L130 PetriNetUnfolder]: 6012/9917 cut-off events. [2023-08-30 12:34:44,987 INFO L131 PetriNetUnfolder]: For 6455/6455 co-relation queries the response was YES. [2023-08-30 12:34:45,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24269 conditions, 9917 events. 6012/9917 cut-off events. For 6455/6455 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 60320 event pairs, 1447 based on Foata normal form. 82/7719 useless extension candidates. Maximal degree in co-relation 20101. Up to 7790 conditions per place. [2023-08-30 12:34:45,062 INFO L137 encePairwiseOnDemand]: 549/558 looper letters, 141 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2023-08-30 12:34:45,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 171 transitions, 1063 flow [2023-08-30 12:34:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1657 transitions. [2023-08-30 12:34:45,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49492234169653526 [2023-08-30 12:34:45,068 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1657 transitions. [2023-08-30 12:34:45,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1657 transitions. [2023-08-30 12:34:45,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:45,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1657 transitions. [2023-08-30 12:34:45,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.1666666666667) internal successors, (1657), 6 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,078 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 533 flow. Second operand 6 states and 1657 transitions. [2023-08-30 12:34:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 171 transitions, 1063 flow [2023-08-30 12:34:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 171 transitions, 1021 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-30 12:34:45,112 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 580 flow [2023-08-30 12:34:45,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2023-08-30 12:34:45,112 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 35 predicate places. [2023-08-30 12:34:45,113 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 580 flow [2023-08-30 12:34:45,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.66666666666666) internal successors, (1522), 6 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:45,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:34:45,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:45,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -156159243, now seen corresponding path program 1 times [2023-08-30 12:34:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122313496] [2023-08-30 12:34:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:45,158 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 12:34:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122313496] [2023-08-30 12:34:45,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122313496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:45,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:45,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818019630] [2023-08-30 12:34:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:45,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:45,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 558 [2023-08-30 12:34:45,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 580 flow. Second operand has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:45,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 558 [2023-08-30 12:34:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:45,812 INFO L130 PetriNetUnfolder]: 4278/7094 cut-off events. [2023-08-30 12:34:45,813 INFO L131 PetriNetUnfolder]: For 3356/3369 co-relation queries the response was YES. [2023-08-30 12:34:45,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16468 conditions, 7094 events. 4278/7094 cut-off events. For 3356/3369 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 39308 event pairs, 2135 based on Foata normal form. 185/5285 useless extension candidates. Maximal degree in co-relation 14635. Up to 4581 conditions per place. [2023-08-30 12:34:45,855 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 109 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-08-30 12:34:45,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 121 transitions, 712 flow [2023-08-30 12:34:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 12:34:45,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477897252090801 [2023-08-30 12:34:45,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 12:34:45,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 12:34:45,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:45,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 12:34:45,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,864 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 580 flow. Second operand 3 states and 917 transitions. [2023-08-30 12:34:45,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 121 transitions, 712 flow [2023-08-30 12:34:45,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 625 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-30 12:34:45,870 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 327 flow [2023-08-30 12:34:45,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 12:34:45,871 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2023-08-30 12:34:45,871 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 327 flow [2023-08-30 12:34:45,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:45,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:45,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:45,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:34:45,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:45,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash -917278505, now seen corresponding path program 1 times [2023-08-30 12:34:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420132447] [2023-08-30 12:34:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420132447] [2023-08-30 12:34:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420132447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132160911] [2023-08-30 12:34:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:45,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:45,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:45,919 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 12:34:45,925 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 12:34:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:46,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:34:46,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:46,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:34:46,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132160911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:46,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:34:46,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:34:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951797471] [2023-08-30 12:34:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:46,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:34:46,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:46,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:34:46,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:34:46,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 558 [2023-08-30 12:34:46,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:46,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:46,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 558 [2023-08-30 12:34:46,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:46,749 INFO L130 PetriNetUnfolder]: 3764/6736 cut-off events. [2023-08-30 12:34:46,750 INFO L131 PetriNetUnfolder]: For 1255/1270 co-relation queries the response was YES. [2023-08-30 12:34:46,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14255 conditions, 6736 events. 3764/6736 cut-off events. For 1255/1270 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 40457 event pairs, 119 based on Foata normal form. 13/5095 useless extension candidates. Maximal degree in co-relation 12791. Up to 3217 conditions per place. [2023-08-30 12:34:46,788 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 170 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2023-08-30 12:34:46,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 183 transitions, 948 flow [2023-08-30 12:34:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:34:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:34:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2023-08-30 12:34:46,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-08-30 12:34:46,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2023-08-30 12:34:46,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2023-08-30 12:34:46,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:46,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2023-08-30 12:34:46,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:46,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 558.0) internal successors, (2790), 5 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:46,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 558.0) internal successors, (2790), 5 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:46,798 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 327 flow. Second operand 4 states and 1248 transitions. [2023-08-30 12:34:46,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 183 transitions, 948 flow [2023-08-30 12:34:46,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 183 transitions, 944 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:46,804 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 324 flow [2023-08-30 12:34:46,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-08-30 12:34:46,805 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-08-30 12:34:46,805 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 324 flow [2023-08-30 12:34:46,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 276.25) internal successors, (1105), 4 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:46,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:46,806 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:46,815 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 12:34:47,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 12:34:47,012 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:47,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:47,013 INFO L85 PathProgramCache]: Analyzing trace with hash -917278443, now seen corresponding path program 1 times [2023-08-30 12:34:47,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:47,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722838981] [2023-08-30 12:34:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:47,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:34:47,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:47,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722838981] [2023-08-30 12:34:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722838981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:47,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229966010] [2023-08-30 12:34:47,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:47,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:47,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 558 [2023-08-30 12:34:47,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:47,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 558 [2023-08-30 12:34:47,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:47,526 INFO L130 PetriNetUnfolder]: 3554/6420 cut-off events. [2023-08-30 12:34:47,526 INFO L131 PetriNetUnfolder]: For 1676/1691 co-relation queries the response was YES. [2023-08-30 12:34:47,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13675 conditions, 6420 events. 3554/6420 cut-off events. For 1676/1691 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 37862 event pairs, 477 based on Foata normal form. 13/4961 useless extension candidates. Maximal degree in co-relation 12310. Up to 4534 conditions per place. [2023-08-30 12:34:47,551 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 111 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2023-08-30 12:34:47,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 673 flow [2023-08-30 12:34:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:47,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 12:34:47,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477897252090801 [2023-08-30 12:34:47,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 12:34:47,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 12:34:47,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:47,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 12:34:47,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,560 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 324 flow. Second operand 3 states and 917 transitions. [2023-08-30 12:34:47,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 126 transitions, 673 flow [2023-08-30 12:34:47,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 126 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:34:47,564 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 333 flow [2023-08-30 12:34:47,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2023-08-30 12:34:47,564 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 19 predicate places. [2023-08-30 12:34:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 333 flow [2023-08-30 12:34:47,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:47,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:47,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:34:47,566 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:47,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1914224002, now seen corresponding path program 1 times [2023-08-30 12:34:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4157737] [2023-08-30 12:34:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:47,606 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 12:34:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4157737] [2023-08-30 12:34:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4157737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:47,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:47,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104505173] [2023-08-30 12:34:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:47,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:47,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 558 [2023-08-30 12:34:47,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:47,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:47,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 558 [2023-08-30 12:34:47,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:48,157 INFO L130 PetriNetUnfolder]: 4137/7171 cut-off events. [2023-08-30 12:34:48,157 INFO L131 PetriNetUnfolder]: For 4724/4733 co-relation queries the response was YES. [2023-08-30 12:34:48,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 7171 events. 4137/7171 cut-off events. For 4724/4733 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 42190 event pairs, 1699 based on Foata normal form. 9/5613 useless extension candidates. Maximal degree in co-relation 15486. Up to 5966 conditions per place. [2023-08-30 12:34:48,182 INFO L137 encePairwiseOnDemand]: 551/558 looper letters, 115 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-30 12:34:48,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 684 flow [2023-08-30 12:34:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-30 12:34:48,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501792114695341 [2023-08-30 12:34:48,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-30 12:34:48,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-30 12:34:48,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:48,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-30 12:34:48,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,190 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 333 flow. Second operand 3 states and 921 transitions. [2023-08-30 12:34:48,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 684 flow [2023-08-30 12:34:48,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:48,195 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 349 flow [2023-08-30 12:34:48,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2023-08-30 12:34:48,196 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2023-08-30 12:34:48,196 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 349 flow [2023-08-30 12:34:48,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:48,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:48,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:48,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:34:48,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:48,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -784742033, now seen corresponding path program 1 times [2023-08-30 12:34:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:48,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119039498] [2023-08-30 12:34:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:48,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:49,562 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 12:34:49,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:49,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119039498] [2023-08-30 12:34:49,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119039498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:49,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:49,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 12:34:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007321800] [2023-08-30 12:34:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:49,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:34:49,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:34:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:34:51,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 558 [2023-08-30 12:34:51,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 234.35714285714286) internal successors, (3281), 14 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:51,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:51,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 558 [2023-08-30 12:34:51,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:52,514 INFO L130 PetriNetUnfolder]: 4284/7415 cut-off events. [2023-08-30 12:34:52,514 INFO L131 PetriNetUnfolder]: For 3660/3660 co-relation queries the response was YES. [2023-08-30 12:34:52,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18171 conditions, 7415 events. 4284/7415 cut-off events. For 3660/3660 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 41629 event pairs, 3472 based on Foata normal form. 0/6015 useless extension candidates. Maximal degree in co-relation 16520. Up to 6919 conditions per place. [2023-08-30 12:34:52,546 INFO L137 encePairwiseOnDemand]: 541/558 looper letters, 79 selfloop transitions, 28 changer transitions 1/115 dead transitions. [2023-08-30 12:34:52,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 675 flow [2023-08-30 12:34:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:34:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:34:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3595 transitions. [2023-08-30 12:34:52,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295101553166069 [2023-08-30 12:34:52,556 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3595 transitions. [2023-08-30 12:34:52,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3595 transitions. [2023-08-30 12:34:52,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:52,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3595 transitions. [2023-08-30 12:34:52,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 239.66666666666666) internal successors, (3595), 15 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:52,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:52,577 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:52,578 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 349 flow. Second operand 15 states and 3595 transitions. [2023-08-30 12:34:52,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 675 flow [2023-08-30 12:34:52,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 671 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:52,586 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 525 flow [2023-08-30 12:34:52,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=525, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2023-08-30 12:34:52,587 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 42 predicate places. [2023-08-30 12:34:52,588 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 525 flow [2023-08-30 12:34:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 234.35714285714286) internal successors, (3281), 14 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:52,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:52,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:52,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 12:34:52,589 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:52,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash -784742058, now seen corresponding path program 1 times [2023-08-30 12:34:52,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:52,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122442742] [2023-08-30 12:34:52,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:52,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:53,125 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 12:34:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122442742] [2023-08-30 12:34:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122442742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:53,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:53,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:34:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396164255] [2023-08-30 12:34:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:53,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:34:53,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:34:53,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:34:54,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 558 [2023-08-30 12:34:54,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 525 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:54,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:54,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 558 [2023-08-30 12:34:54,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:56,497 INFO L130 PetriNetUnfolder]: 13635/23372 cut-off events. [2023-08-30 12:34:56,497 INFO L131 PetriNetUnfolder]: For 9268/9268 co-relation queries the response was YES. [2023-08-30 12:34:56,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57303 conditions, 23372 events. 13635/23372 cut-off events. For 9268/9268 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 166979 event pairs, 4189 based on Foata normal form. 0/18556 useless extension candidates. Maximal degree in co-relation 40566. Up to 5784 conditions per place. [2023-08-30 12:34:56,649 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 363 selfloop transitions, 62 changer transitions 3/435 dead transitions. [2023-08-30 12:34:56,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 435 transitions, 2434 flow [2023-08-30 12:34:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 12:34:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 12:34:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4649 transitions. [2023-08-30 12:34:56,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46286340103544404 [2023-08-30 12:34:56,659 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4649 transitions. [2023-08-30 12:34:56,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4649 transitions. [2023-08-30 12:34:56,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:56,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4649 transitions. [2023-08-30 12:34:56,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 258.27777777777777) internal successors, (4649), 18 states have internal predecessors, (4649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:56,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:56,682 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:56,683 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 525 flow. Second operand 18 states and 4649 transitions. [2023-08-30 12:34:56,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 435 transitions, 2434 flow [2023-08-30 12:34:56,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 435 transitions, 2372 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-30 12:34:56,705 INFO L231 Difference]: Finished difference. Result has 136 places, 134 transitions, 748 flow [2023-08-30 12:34:56,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=748, PETRI_PLACES=136, PETRI_TRANSITIONS=134} [2023-08-30 12:34:56,706 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 60 predicate places. [2023-08-30 12:34:56,706 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 748 flow [2023-08-30 12:34:56,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:56,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:56,707 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] [2023-08-30 12:34:56,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 12:34:56,708 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:34:56,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2011241202, now seen corresponding path program 1 times [2023-08-30 12:34:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:56,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497191724] [2023-08-30 12:34:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497191724] [2023-08-30 12:34:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497191724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:58,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:34:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798816640] [2023-08-30 12:34:58,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:58,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:34:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:34:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:34:59,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 12:34:59,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 748 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:34:59,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:59,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 12:34:59,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:03,180 INFO L130 PetriNetUnfolder]: 14259/24570 cut-off events. [2023-08-30 12:35:03,180 INFO L131 PetriNetUnfolder]: For 14904/14904 co-relation queries the response was YES. [2023-08-30 12:35:03,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64960 conditions, 24570 events. 14259/24570 cut-off events. For 14904/14904 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 176384 event pairs, 9499 based on Foata normal form. 0/20249 useless extension candidates. Maximal degree in co-relation 64802. Up to 21776 conditions per place. [2023-08-30 12:35:03,304 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 210 selfloop transitions, 42 changer transitions 3/262 dead transitions. [2023-08-30 12:35:03,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 262 transitions, 1860 flow [2023-08-30 12:35:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:35:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:35:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3626 transitions. [2023-08-30 12:35:03,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332138590203106 [2023-08-30 12:35:03,311 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3626 transitions. [2023-08-30 12:35:03,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3626 transitions. [2023-08-30 12:35:03,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:03,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3626 transitions. [2023-08-30 12:35:03,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 241.73333333333332) internal successors, (3626), 15 states have internal predecessors, (3626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,328 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,328 INFO L175 Difference]: Start difference. First operand has 136 places, 134 transitions, 748 flow. Second operand 15 states and 3626 transitions. [2023-08-30 12:35:03,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 262 transitions, 1860 flow [2023-08-30 12:35:03,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 262 transitions, 1803 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-30 12:35:03,374 INFO L231 Difference]: Finished difference. Result has 154 places, 145 transitions, 936 flow [2023-08-30 12:35:03,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=936, PETRI_PLACES=154, PETRI_TRANSITIONS=145} [2023-08-30 12:35:03,374 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 78 predicate places. [2023-08-30 12:35:03,375 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 145 transitions, 936 flow [2023-08-30 12:35:03,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:03,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:03,376 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] [2023-08-30 12:35:03,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:35:03,376 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:03,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -300438654, now seen corresponding path program 2 times [2023-08-30 12:35:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126558057] [2023-08-30 12:35:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:03,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:04,411 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 12:35:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126558057] [2023-08-30 12:35:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126558057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:04,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:35:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755465441] [2023-08-30 12:35:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:35:04,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:35:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:35:05,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 12:35:05,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 145 transitions, 936 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:05,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:05,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 12:35:05,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:08,391 INFO L130 PetriNetUnfolder]: 14761/25387 cut-off events. [2023-08-30 12:35:08,392 INFO L131 PetriNetUnfolder]: For 17129/17129 co-relation queries the response was YES. [2023-08-30 12:35:08,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68331 conditions, 25387 events. 14761/25387 cut-off events. For 17129/17129 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 182953 event pairs, 7000 based on Foata normal form. 26/21082 useless extension candidates. Maximal degree in co-relation 68167. Up to 20686 conditions per place. [2023-08-30 12:35:08,577 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 200 selfloop transitions, 53 changer transitions 3/263 dead transitions. [2023-08-30 12:35:08,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 263 transitions, 2001 flow [2023-08-30 12:35:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:35:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:35:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3385 transitions. [2023-08-30 12:35:08,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43330773169482845 [2023-08-30 12:35:08,584 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3385 transitions. [2023-08-30 12:35:08,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3385 transitions. [2023-08-30 12:35:08,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:08,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3385 transitions. [2023-08-30 12:35:08,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 241.78571428571428) internal successors, (3385), 14 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:08,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 558.0) internal successors, (8370), 15 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:08,718 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 558.0) internal successors, (8370), 15 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:08,718 INFO L175 Difference]: Start difference. First operand has 154 places, 145 transitions, 936 flow. Second operand 14 states and 3385 transitions. [2023-08-30 12:35:08,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 263 transitions, 2001 flow [2023-08-30 12:35:08,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 263 transitions, 1957 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-30 12:35:08,779 INFO L231 Difference]: Finished difference. Result has 170 places, 155 transitions, 1145 flow [2023-08-30 12:35:08,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1145, PETRI_PLACES=170, PETRI_TRANSITIONS=155} [2023-08-30 12:35:08,781 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 94 predicate places. [2023-08-30 12:35:08,781 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 155 transitions, 1145 flow [2023-08-30 12:35:08,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:08,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:08,782 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] [2023-08-30 12:35:08,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 12:35:08,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:08,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 808081645, now seen corresponding path program 1 times [2023-08-30 12:35:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34159535] [2023-08-30 12:35:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:09,340 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 12:35:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34159535] [2023-08-30 12:35:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34159535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:09,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 12:35:09,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550333915] [2023-08-30 12:35:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 12:35:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 12:35:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 12:35:10,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 558 [2023-08-30 12:35:10,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 155 transitions, 1145 flow. Second operand has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:10,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:10,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 558 [2023-08-30 12:35:10,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:14,695 INFO L130 PetriNetUnfolder]: 19383/33022 cut-off events. [2023-08-30 12:35:14,695 INFO L131 PetriNetUnfolder]: For 23193/23193 co-relation queries the response was YES. [2023-08-30 12:35:14,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89813 conditions, 33022 events. 19383/33022 cut-off events. For 23193/23193 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 236954 event pairs, 6683 based on Foata normal form. 129/27308 useless extension candidates. Maximal degree in co-relation 89643. Up to 17777 conditions per place. [2023-08-30 12:35:14,976 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 365 selfloop transitions, 77 changer transitions 0/449 dead transitions. [2023-08-30 12:35:14,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 449 transitions, 2996 flow [2023-08-30 12:35:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:35:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:35:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3856 transitions. [2023-08-30 12:35:14,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46069295101553165 [2023-08-30 12:35:14,980 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3856 transitions. [2023-08-30 12:35:14,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3856 transitions. [2023-08-30 12:35:14,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:14,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3856 transitions. [2023-08-30 12:35:14,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 257.06666666666666) internal successors, (3856), 15 states have internal predecessors, (3856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,991 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:14,991 INFO L175 Difference]: Start difference. First operand has 170 places, 155 transitions, 1145 flow. Second operand 15 states and 3856 transitions. [2023-08-30 12:35:14,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 449 transitions, 2996 flow [2023-08-30 12:35:15,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 449 transitions, 2905 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-30 12:35:15,083 INFO L231 Difference]: Finished difference. Result has 182 places, 176 transitions, 1408 flow [2023-08-30 12:35:15,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1408, PETRI_PLACES=182, PETRI_TRANSITIONS=176} [2023-08-30 12:35:15,084 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 106 predicate places. [2023-08-30 12:35:15,084 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 176 transitions, 1408 flow [2023-08-30 12:35:15,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.42857142857142) internal successors, (3296), 14 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:15,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:15,085 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] [2023-08-30 12:35:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 12:35:15,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:15,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -643986808, now seen corresponding path program 3 times [2023-08-30 12:35:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591852705] [2023-08-30 12:35:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:16,446 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 12:35:16,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591852705] [2023-08-30 12:35:16,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591852705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:16,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:16,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:35:16,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500093473] [2023-08-30 12:35:16,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:16,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:35:16,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:35:16,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:35:17,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 12:35:17,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 176 transitions, 1408 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:17,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:17,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 12:35:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:21,738 INFO L130 PetriNetUnfolder]: 19273/33324 cut-off events. [2023-08-30 12:35:21,739 INFO L131 PetriNetUnfolder]: For 29935/29943 co-relation queries the response was YES. [2023-08-30 12:35:21,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93856 conditions, 33324 events. 19273/33324 cut-off events. For 29935/29943 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 243832 event pairs, 9045 based on Foata normal form. 26/27645 useless extension candidates. Maximal degree in co-relation 72007. Up to 27264 conditions per place. [2023-08-30 12:35:22,068 INFO L137 encePairwiseOnDemand]: 542/558 looper letters, 233 selfloop transitions, 60 changer transitions 3/303 dead transitions. [2023-08-30 12:35:22,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 303 transitions, 2591 flow [2023-08-30 12:35:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 12:35:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 12:35:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3855 transitions. [2023-08-30 12:35:22,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43178763440860213 [2023-08-30 12:35:22,074 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3855 transitions. [2023-08-30 12:35:22,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3855 transitions. [2023-08-30 12:35:22,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:22,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3855 transitions. [2023-08-30 12:35:22,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 240.9375) internal successors, (3855), 16 states have internal predecessors, (3855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 558.0) internal successors, (9486), 17 states have internal predecessors, (9486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,087 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 558.0) internal successors, (9486), 17 states have internal predecessors, (9486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,087 INFO L175 Difference]: Start difference. First operand has 182 places, 176 transitions, 1408 flow. Second operand 16 states and 3855 transitions. [2023-08-30 12:35:22,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 303 transitions, 2591 flow [2023-08-30 12:35:22,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 303 transitions, 2552 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 12:35:22,227 INFO L231 Difference]: Finished difference. Result has 195 places, 181 transitions, 1570 flow [2023-08-30 12:35:22,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1570, PETRI_PLACES=195, PETRI_TRANSITIONS=181} [2023-08-30 12:35:22,228 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 119 predicate places. [2023-08-30 12:35:22,228 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 181 transitions, 1570 flow [2023-08-30 12:35:22,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:22,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:22,229 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] [2023-08-30 12:35:22,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 12:35:22,229 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:22,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1443120322, now seen corresponding path program 4 times [2023-08-30 12:35:22,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:22,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202615591] [2023-08-30 12:35:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:23,328 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 12:35:23,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:23,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202615591] [2023-08-30 12:35:23,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202615591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:23,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:23,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 12:35:23,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004374716] [2023-08-30 12:35:23,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:23,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 12:35:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:23,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 12:35:23,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-30 12:35:24,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 558 [2023-08-30 12:35:24,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 181 transitions, 1570 flow. Second operand has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:24,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:24,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 558 [2023-08-30 12:35:24,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:28,262 INFO L130 PetriNetUnfolder]: 19269/33468 cut-off events. [2023-08-30 12:35:28,262 INFO L131 PetriNetUnfolder]: For 33297/33301 co-relation queries the response was YES. [2023-08-30 12:35:28,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95462 conditions, 33468 events. 19269/33468 cut-off events. For 33297/33301 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 246273 event pairs, 8974 based on Foata normal form. 26/27783 useless extension candidates. Maximal degree in co-relation 95285. Up to 27036 conditions per place. [2023-08-30 12:35:28,584 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 243 selfloop transitions, 60 changer transitions 3/313 dead transitions. [2023-08-30 12:35:28,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 313 transitions, 2762 flow [2023-08-30 12:35:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:35:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:35:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3633 transitions. [2023-08-30 12:35:28,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43405017921146954 [2023-08-30 12:35:28,587 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3633 transitions. [2023-08-30 12:35:28,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3633 transitions. [2023-08-30 12:35:28,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:28,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3633 transitions. [2023-08-30 12:35:28,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 242.2) internal successors, (3633), 15 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,595 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,595 INFO L175 Difference]: Start difference. First operand has 195 places, 181 transitions, 1570 flow. Second operand 15 states and 3633 transitions. [2023-08-30 12:35:28,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 313 transitions, 2762 flow [2023-08-30 12:35:28,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 313 transitions, 2664 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-08-30 12:35:28,717 INFO L231 Difference]: Finished difference. Result has 200 places, 185 transitions, 1661 flow [2023-08-30 12:35:28,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1661, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2023-08-30 12:35:28,718 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 124 predicate places. [2023-08-30 12:35:28,718 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1661 flow [2023-08-30 12:35:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 231.33333333333334) internal successors, (3470), 15 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:28,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 12:35:28,718 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:28,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 452925267, now seen corresponding path program 1 times [2023-08-30 12:35:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:28,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609384133] [2023-08-30 12:35:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:35:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:28,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609384133] [2023-08-30 12:35:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609384133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214382725] [2023-08-30 12:35:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:28,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:28,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 558 [2023-08-30 12:35:28,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1661 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:28,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:28,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 558 [2023-08-30 12:35:28,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:32,085 INFO L130 PetriNetUnfolder]: 17083/29862 cut-off events. [2023-08-30 12:35:32,085 INFO L131 PetriNetUnfolder]: For 38663/38692 co-relation queries the response was YES. [2023-08-30 12:35:32,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87246 conditions, 29862 events. 17083/29862 cut-off events. For 38663/38692 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 216843 event pairs, 6908 based on Foata normal form. 29/25488 useless extension candidates. Maximal degree in co-relation 87067. Up to 21962 conditions per place. [2023-08-30 12:35:32,334 INFO L137 encePairwiseOnDemand]: 553/558 looper letters, 196 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2023-08-30 12:35:32,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 216 transitions, 2196 flow [2023-08-30 12:35:32,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 897 transitions. [2023-08-30 12:35:32,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53584229390681 [2023-08-30 12:35:32,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 897 transitions. [2023-08-30 12:35:32,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 897 transitions. [2023-08-30 12:35:32,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:32,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 897 transitions. [2023-08-30 12:35:32,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:32,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:32,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:32,338 INFO L175 Difference]: Start difference. First operand has 200 places, 185 transitions, 1661 flow. Second operand 3 states and 897 transitions. [2023-08-30 12:35:32,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 216 transitions, 2196 flow [2023-08-30 12:35:32,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 216 transitions, 2126 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-30 12:35:32,631 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 1599 flow [2023-08-30 12:35:32,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1599, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2023-08-30 12:35:32,632 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 116 predicate places. [2023-08-30 12:35:32,632 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 1599 flow [2023-08-30 12:35:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:32,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:32,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 12:35:32,633 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:32,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 452925224, now seen corresponding path program 1 times [2023-08-30 12:35:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522928033] [2023-08-30 12:35:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:35:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522928033] [2023-08-30 12:35:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522928033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:35:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607376158] [2023-08-30 12:35:32,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:32,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:35:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:35:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:35:32,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 558 [2023-08-30 12:35:32,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 1599 flow. Second operand has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:32,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:32,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 558 [2023-08-30 12:35:32,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:35,745 INFO L130 PetriNetUnfolder]: 15334/27056 cut-off events. [2023-08-30 12:35:35,745 INFO L131 PetriNetUnfolder]: For 40379/40408 co-relation queries the response was YES. [2023-08-30 12:35:35,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80574 conditions, 27056 events. 15334/27056 cut-off events. For 40379/40408 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 193803 event pairs, 7635 based on Foata normal form. 1052/24495 useless extension candidates. Maximal degree in co-relation 80395. Up to 23339 conditions per place. [2023-08-30 12:35:35,946 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 174 selfloop transitions, 1 changer transitions 0/191 dead transitions. [2023-08-30 12:35:35,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 191 transitions, 1989 flow [2023-08-30 12:35:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:35:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:35:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 12:35:35,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526284348864994 [2023-08-30 12:35:35,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 12:35:35,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 12:35:35,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:35,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 12:35:35,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:35,950 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 1599 flow. Second operand 3 states and 881 transitions. [2023-08-30 12:35:35,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 191 transitions, 1989 flow [2023-08-30 12:35:36,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 191 transitions, 1985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:36,052 INFO L231 Difference]: Finished difference. Result has 191 places, 182 transitions, 1589 flow [2023-08-30 12:35:36,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1589, PETRI_PLACES=191, PETRI_TRANSITIONS=182} [2023-08-30 12:35:36,053 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 115 predicate places. [2023-08-30 12:35:36,053 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 182 transitions, 1589 flow [2023-08-30 12:35:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:36,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:36,053 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] [2023-08-30 12:35:36,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 12:35:36,053 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:36,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash -742070961, now seen corresponding path program 1 times [2023-08-30 12:35:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136503134] [2023-08-30 12:35:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:36,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:36,434 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 12:35:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136503134] [2023-08-30 12:35:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136503134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:36,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 12:35:36,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428006472] [2023-08-30 12:35:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:35:36,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:35:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:35:37,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 558 [2023-08-30 12:35:37,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 182 transitions, 1589 flow. Second operand has 12 states, 12 states have (on average 236.83333333333334) internal successors, (2842), 12 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:37,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:37,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 558 [2023-08-30 12:35:37,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:42,866 INFO L130 PetriNetUnfolder]: 24546/42781 cut-off events. [2023-08-30 12:35:42,866 INFO L131 PetriNetUnfolder]: For 48141/48149 co-relation queries the response was YES. [2023-08-30 12:35:43,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124636 conditions, 42781 events. 24546/42781 cut-off events. For 48141/48149 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 326680 event pairs, 6614 based on Foata normal form. 0/37559 useless extension candidates. Maximal degree in co-relation 124456. Up to 9046 conditions per place. [2023-08-30 12:35:43,260 INFO L137 encePairwiseOnDemand]: 537/558 looper letters, 388 selfloop transitions, 122 changer transitions 3/520 dead transitions. [2023-08-30 12:35:43,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 520 transitions, 4018 flow [2023-08-30 12:35:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 12:35:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 12:35:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4586 transitions. [2023-08-30 12:35:43,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565909996017523 [2023-08-30 12:35:43,264 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4586 transitions. [2023-08-30 12:35:43,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4586 transitions. [2023-08-30 12:35:43,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:43,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4586 transitions. [2023-08-30 12:35:43,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 254.77777777777777) internal successors, (4586), 18 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,277 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,277 INFO L175 Difference]: Start difference. First operand has 191 places, 182 transitions, 1589 flow. Second operand 18 states and 4586 transitions. [2023-08-30 12:35:43,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 520 transitions, 4018 flow [2023-08-30 12:35:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 520 transitions, 4015 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:35:43,491 INFO L231 Difference]: Finished difference. Result has 213 places, 236 transitions, 2443 flow [2023-08-30 12:35:43,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2443, PETRI_PLACES=213, PETRI_TRANSITIONS=236} [2023-08-30 12:35:43,492 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 137 predicate places. [2023-08-30 12:35:43,492 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 236 transitions, 2443 flow [2023-08-30 12:35:43,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 236.83333333333334) internal successors, (2842), 12 states have internal predecessors, (2842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:43,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:43,492 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] [2023-08-30 12:35:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 12:35:43,493 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:43,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash -742070962, now seen corresponding path program 1 times [2023-08-30 12:35:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203926416] [2023-08-30 12:35:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:44,332 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 12:35:44,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:44,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203926416] [2023-08-30 12:35:44,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203926416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:44,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 12:35:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786811305] [2023-08-30 12:35:44,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:44,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:35:44,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:44,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:35:44,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:35:44,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 558 [2023-08-30 12:35:44,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 236 transitions, 2443 flow. Second operand has 12 states, 12 states have (on average 238.83333333333334) internal successors, (2866), 12 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:44,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:44,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 558 [2023-08-30 12:35:44,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:50,891 INFO L130 PetriNetUnfolder]: 25311/44168 cut-off events. [2023-08-30 12:35:50,891 INFO L131 PetriNetUnfolder]: For 82349/82349 co-relation queries the response was YES. [2023-08-30 12:35:51,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141566 conditions, 44168 events. 25311/44168 cut-off events. For 82349/82349 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 339537 event pairs, 19648 based on Foata normal form. 26/39619 useless extension candidates. Maximal degree in co-relation 141377. Up to 39569 conditions per place. [2023-08-30 12:35:51,427 INFO L137 encePairwiseOnDemand]: 545/558 looper letters, 268 selfloop transitions, 32 changer transitions 3/310 dead transitions. [2023-08-30 12:35:51,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 310 transitions, 3495 flow [2023-08-30 12:35:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:35:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:35:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2976 transitions. [2023-08-30 12:35:51,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 12:35:51,431 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2976 transitions. [2023-08-30 12:35:51,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2976 transitions. [2023-08-30 12:35:51,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:51,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2976 transitions. [2023-08-30 12:35:51,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,440 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,440 INFO L175 Difference]: Start difference. First operand has 213 places, 236 transitions, 2443 flow. Second operand 12 states and 2976 transitions. [2023-08-30 12:35:51,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 310 transitions, 3495 flow [2023-08-30 12:35:51,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 310 transitions, 3416 flow, removed 20 selfloop flow, removed 10 redundant places. [2023-08-30 12:35:51,745 INFO L231 Difference]: Finished difference. Result has 220 places, 245 transitions, 2599 flow [2023-08-30 12:35:51,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2599, PETRI_PLACES=220, PETRI_TRANSITIONS=245} [2023-08-30 12:35:51,746 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 144 predicate places. [2023-08-30 12:35:51,746 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 245 transitions, 2599 flow [2023-08-30 12:35:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 238.83333333333334) internal successors, (2866), 12 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:51,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:51,746 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 12:35:51,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 12:35:51,747 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:35:51,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:51,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1314933643, now seen corresponding path program 1 times [2023-08-30 12:35:51,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:51,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124038584] [2023-08-30 12:35:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:51,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:52,755 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 12:35:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124038584] [2023-08-30 12:35:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124038584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:35:52,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:35:52,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:35:52,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073754499] [2023-08-30 12:35:52,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:35:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:35:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:35:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:35:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 558 [2023-08-30 12:35:53,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 245 transitions, 2599 flow. Second operand has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:35:53,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:53,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 558 [2023-08-30 12:35:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:59,570 INFO L130 PetriNetUnfolder]: 25035/43768 cut-off events. [2023-08-30 12:35:59,570 INFO L131 PetriNetUnfolder]: For 79456/79456 co-relation queries the response was YES. [2023-08-30 12:36:00,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140334 conditions, 43768 events. 25035/43768 cut-off events. For 79456/79456 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 335428 event pairs, 15850 based on Foata normal form. 104/39658 useless extension candidates. Maximal degree in co-relation 121844. Up to 36100 conditions per place. [2023-08-30 12:36:00,189 INFO L137 encePairwiseOnDemand]: 545/558 looper letters, 275 selfloop transitions, 47 changer transitions 3/332 dead transitions. [2023-08-30 12:36:00,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 332 transitions, 3661 flow [2023-08-30 12:36:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 12:36:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 12:36:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2759 transitions. [2023-08-30 12:36:00,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2023-08-30 12:36:00,193 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2759 transitions. [2023-08-30 12:36:00,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2759 transitions. [2023-08-30 12:36:00,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:00,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2759 transitions. [2023-08-30 12:36:00,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 250.8181818181818) internal successors, (2759), 11 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:00,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 558.0) internal successors, (6696), 12 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:00,200 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 558.0) internal successors, (6696), 12 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:00,200 INFO L175 Difference]: Start difference. First operand has 220 places, 245 transitions, 2599 flow. Second operand 11 states and 2759 transitions. [2023-08-30 12:36:00,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 332 transitions, 3661 flow [2023-08-30 12:36:00,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 332 transitions, 3617 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 12:36:00,740 INFO L231 Difference]: Finished difference. Result has 226 places, 246 transitions, 2677 flow [2023-08-30 12:36:00,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2677, PETRI_PLACES=226, PETRI_TRANSITIONS=246} [2023-08-30 12:36:00,741 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 150 predicate places. [2023-08-30 12:36:00,741 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 246 transitions, 2677 flow [2023-08-30 12:36:00,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:00,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:00,742 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 12:36:00,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 12:36:00,742 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:00,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1031241843, now seen corresponding path program 2 times [2023-08-30 12:36:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:00,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623547010] [2023-08-30 12:36:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:00,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:01,714 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 12:36:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623547010] [2023-08-30 12:36:01,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623547010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:01,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:01,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:36:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116309659] [2023-08-30 12:36:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:01,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:36:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:36:01,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:36:02,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 558 [2023-08-30 12:36:02,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 246 transitions, 2677 flow. Second operand has 13 states, 13 states have (on average 235.76923076923077) internal successors, (3065), 13 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:02,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:02,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 558 [2023-08-30 12:36:02,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:09,413 INFO L130 PetriNetUnfolder]: 26285/45887 cut-off events. [2023-08-30 12:36:09,413 INFO L131 PetriNetUnfolder]: For 86660/86664 co-relation queries the response was YES. [2023-08-30 12:36:09,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147883 conditions, 45887 events. 26285/45887 cut-off events. For 86660/86664 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 354074 event pairs, 10939 based on Foata normal form. 63/41632 useless extension candidates. Maximal degree in co-relation 129045. Up to 35194 conditions per place. [2023-08-30 12:36:09,989 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 317 selfloop transitions, 65 changer transitions 0/389 dead transitions. [2023-08-30 12:36:09,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 389 transitions, 4139 flow [2023-08-30 12:36:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 12:36:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 12:36:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3227 transitions. [2023-08-30 12:36:09,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448580093741384 [2023-08-30 12:36:09,992 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3227 transitions. [2023-08-30 12:36:09,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3227 transitions. [2023-08-30 12:36:09,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:09,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3227 transitions. [2023-08-30 12:36:09,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 248.23076923076923) internal successors, (3227), 13 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:10,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:10,002 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:10,002 INFO L175 Difference]: Start difference. First operand has 226 places, 246 transitions, 2677 flow. Second operand 13 states and 3227 transitions. [2023-08-30 12:36:10,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 389 transitions, 4139 flow [2023-08-30 12:36:10,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 389 transitions, 4056 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 12:36:10,329 INFO L231 Difference]: Finished difference. Result has 232 places, 258 transitions, 2904 flow [2023-08-30 12:36:10,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2904, PETRI_PLACES=232, PETRI_TRANSITIONS=258} [2023-08-30 12:36:10,331 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2023-08-30 12:36:10,331 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 258 transitions, 2904 flow [2023-08-30 12:36:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 235.76923076923077) internal successors, (3065), 13 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:10,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:10,332 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 12:36:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 12:36:10,332 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:10,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1031241844, now seen corresponding path program 1 times [2023-08-30 12:36:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:10,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195031898] [2023-08-30 12:36:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:10,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:10,777 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 12:36:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:10,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195031898] [2023-08-30 12:36:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195031898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:10,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:36:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343024181] [2023-08-30 12:36:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:10,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:36:10,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:36:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:36:11,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 558 [2023-08-30 12:36:11,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 258 transitions, 2904 flow. Second operand has 13 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:11,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:11,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 558 [2023-08-30 12:36:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:18,673 INFO L130 PetriNetUnfolder]: 26033/45197 cut-off events. [2023-08-30 12:36:18,673 INFO L131 PetriNetUnfolder]: For 100439/100443 co-relation queries the response was YES. [2023-08-30 12:36:19,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150250 conditions, 45197 events. 26033/45197 cut-off events. For 100439/100443 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 345992 event pairs, 10862 based on Foata normal form. 234/41642 useless extension candidates. Maximal degree in co-relation 131256. Up to 24459 conditions per place. [2023-08-30 12:36:19,233 INFO L137 encePairwiseOnDemand]: 538/558 looper letters, 361 selfloop transitions, 141 changer transitions 0/509 dead transitions. [2023-08-30 12:36:19,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 509 transitions, 4833 flow [2023-08-30 12:36:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:36:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:36:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3790 transitions. [2023-08-30 12:36:19,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45280764635603343 [2023-08-30 12:36:19,237 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3790 transitions. [2023-08-30 12:36:19,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3790 transitions. [2023-08-30 12:36:19,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:19,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3790 transitions. [2023-08-30 12:36:19,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 252.66666666666666) internal successors, (3790), 15 states have internal predecessors, (3790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:19,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:19,246 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 558.0) internal successors, (8928), 16 states have internal predecessors, (8928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:19,247 INFO L175 Difference]: Start difference. First operand has 232 places, 258 transitions, 2904 flow. Second operand 15 states and 3790 transitions. [2023-08-30 12:36:19,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 509 transitions, 4833 flow [2023-08-30 12:36:19,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 509 transitions, 4766 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-30 12:36:19,641 INFO L231 Difference]: Finished difference. Result has 241 places, 270 transitions, 3331 flow [2023-08-30 12:36:19,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3331, PETRI_PLACES=241, PETRI_TRANSITIONS=270} [2023-08-30 12:36:19,641 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 165 predicate places. [2023-08-30 12:36:19,641 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 270 transitions, 3331 flow [2023-08-30 12:36:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 233.76923076923077) internal successors, (3039), 13 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:19,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:19,642 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 12:36:19,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 12:36:19,642 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:19,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash -624278245, now seen corresponding path program 3 times [2023-08-30 12:36:19,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:19,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902452217] [2023-08-30 12:36:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:20,697 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 12:36:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:20,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902452217] [2023-08-30 12:36:20,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902452217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:20,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:20,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:36:20,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999827361] [2023-08-30 12:36:20,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:20,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:36:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:36:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:36:22,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 558 [2023-08-30 12:36:22,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 270 transitions, 3331 flow. Second operand has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:22,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:22,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 558 [2023-08-30 12:36:22,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:29,006 INFO L130 PetriNetUnfolder]: 26067/45588 cut-off events. [2023-08-30 12:36:29,006 INFO L131 PetriNetUnfolder]: For 129353/129365 co-relation queries the response was YES. [2023-08-30 12:36:29,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158852 conditions, 45588 events. 26067/45588 cut-off events. For 129353/129365 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 351799 event pairs, 10545 based on Foata normal form. 52/41922 useless extension candidates. Maximal degree in co-relation 138773. Up to 34592 conditions per place. [2023-08-30 12:36:29,678 INFO L137 encePairwiseOnDemand]: 541/558 looper letters, 329 selfloop transitions, 63 changer transitions 0/399 dead transitions. [2023-08-30 12:36:29,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 399 transitions, 4722 flow [2023-08-30 12:36:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 12:36:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 12:36:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3275 transitions. [2023-08-30 12:36:29,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514750482492418 [2023-08-30 12:36:29,681 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3275 transitions. [2023-08-30 12:36:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3275 transitions. [2023-08-30 12:36:29,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:29,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3275 transitions. [2023-08-30 12:36:29,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 251.92307692307693) internal successors, (3275), 13 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:29,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:29,689 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 558.0) internal successors, (7812), 14 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:29,690 INFO L175 Difference]: Start difference. First operand has 241 places, 270 transitions, 3331 flow. Second operand 13 states and 3275 transitions. [2023-08-30 12:36:29,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 399 transitions, 4722 flow [2023-08-30 12:36:30,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 399 transitions, 4612 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-30 12:36:30,588 INFO L231 Difference]: Finished difference. Result has 248 places, 271 transitions, 3384 flow [2023-08-30 12:36:30,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3384, PETRI_PLACES=248, PETRI_TRANSITIONS=271} [2023-08-30 12:36:30,589 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 172 predicate places. [2023-08-30 12:36:30,589 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 271 transitions, 3384 flow [2023-08-30 12:36:30,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 239.76923076923077) internal successors, (3117), 13 states have internal predecessors, (3117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:30,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:30,589 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 12:36:30,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 12:36:30,590 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:30,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1529360933, now seen corresponding path program 4 times [2023-08-30 12:36:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:30,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301830875] [2023-08-30 12:36:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:31,473 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 12:36:31,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:31,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301830875] [2023-08-30 12:36:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301830875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:31,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-30 12:36:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361550952] [2023-08-30 12:36:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 12:36:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 12:36:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 12:36:32,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 558 [2023-08-30 12:36:32,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 271 transitions, 3384 flow. Second operand has 13 states, 13 states have (on average 240.76923076923077) internal successors, (3130), 13 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:32,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:32,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 558 [2023-08-30 12:36:32,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:39,403 INFO L130 PetriNetUnfolder]: 25012/43890 cut-off events. [2023-08-30 12:36:39,403 INFO L131 PetriNetUnfolder]: For 122465/122465 co-relation queries the response was YES. [2023-08-30 12:36:39,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151734 conditions, 43890 events. 25012/43890 cut-off events. For 122465/122465 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 336538 event pairs, 11293 based on Foata normal form. 104/40276 useless extension candidates. Maximal degree in co-relation 122570. Up to 34234 conditions per place. [2023-08-30 12:36:39,919 INFO L137 encePairwiseOnDemand]: 545/558 looper letters, 297 selfloop transitions, 51 changer transitions 3/358 dead transitions. [2023-08-30 12:36:39,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 358 transitions, 4441 flow [2023-08-30 12:36:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:36:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:36:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3012 transitions. [2023-08-30 12:36:39,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449820788530466 [2023-08-30 12:36:39,923 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3012 transitions. [2023-08-30 12:36:39,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3012 transitions. [2023-08-30 12:36:39,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:39,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3012 transitions. [2023-08-30 12:36:39,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:39,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:39,929 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:39,929 INFO L175 Difference]: Start difference. First operand has 248 places, 271 transitions, 3384 flow. Second operand 12 states and 3012 transitions. [2023-08-30 12:36:39,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 358 transitions, 4441 flow [2023-08-30 12:36:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 358 transitions, 4327 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-30 12:36:40,540 INFO L231 Difference]: Finished difference. Result has 248 places, 265 transitions, 3304 flow [2023-08-30 12:36:40,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3304, PETRI_PLACES=248, PETRI_TRANSITIONS=265} [2023-08-30 12:36:40,540 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 172 predicate places. [2023-08-30 12:36:40,541 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 265 transitions, 3304 flow [2023-08-30 12:36:40,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.76923076923077) internal successors, (3130), 13 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:40,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:40,541 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, 1, 1, 1, 1] [2023-08-30 12:36:40,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 12:36:40,542 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:40,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1649093189, now seen corresponding path program 1 times [2023-08-30 12:36:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946071710] [2023-08-30 12:36:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:40,593 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 12:36:40,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:40,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946071710] [2023-08-30 12:36:40,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946071710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:40,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:40,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:36:40,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260031677] [2023-08-30 12:36:40,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:40,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:36:40,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:36:40,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:36:40,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 558 [2023-08-30 12:36:40,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 265 transitions, 3304 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:40,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:40,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 558 [2023-08-30 12:36:40,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:43,083 INFO L130 PetriNetUnfolder]: 10486/18589 cut-off events. [2023-08-30 12:36:43,083 INFO L131 PetriNetUnfolder]: For 63631/63704 co-relation queries the response was YES. [2023-08-30 12:36:43,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65502 conditions, 18589 events. 10486/18589 cut-off events. For 63631/63704 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 121759 event pairs, 6200 based on Foata normal form. 657/18259 useless extension candidates. Maximal degree in co-relation 58218. Up to 9326 conditions per place. [2023-08-30 12:36:43,293 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 205 selfloop transitions, 2 changer transitions 1/221 dead transitions. [2023-08-30 12:36:43,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 221 transitions, 3073 flow [2023-08-30 12:36:43,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:36:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:36:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 891 transitions. [2023-08-30 12:36:43,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-08-30 12:36:43,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 891 transitions. [2023-08-30 12:36:43,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 891 transitions. [2023-08-30 12:36:43,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:43,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 891 transitions. [2023-08-30 12:36:43,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:43,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:43,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:43,296 INFO L175 Difference]: Start difference. First operand has 248 places, 265 transitions, 3304 flow. Second operand 3 states and 891 transitions. [2023-08-30 12:36:43,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 221 transitions, 3073 flow [2023-08-30 12:36:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 221 transitions, 2911 flow, removed 8 selfloop flow, removed 16 redundant places. [2023-08-30 12:36:43,489 INFO L231 Difference]: Finished difference. Result has 234 places, 205 transitions, 2436 flow [2023-08-30 12:36:43,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2436, PETRI_PLACES=234, PETRI_TRANSITIONS=205} [2023-08-30 12:36:43,490 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 158 predicate places. [2023-08-30 12:36:43,490 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 205 transitions, 2436 flow [2023-08-30 12:36:43,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:43,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:43,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:36:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 12:36:43,491 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:43,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:43,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1137275059, now seen corresponding path program 1 times [2023-08-30 12:36:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127043883] [2023-08-30 12:36:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:43,547 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 12:36:43,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:43,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127043883] [2023-08-30 12:36:43,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127043883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:43,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:43,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:36:43,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677276633] [2023-08-30 12:36:43,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:43,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:36:43,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:36:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:36:43,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 558 [2023-08-30 12:36:43,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 205 transitions, 2436 flow. Second operand has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:43,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:43,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 558 [2023-08-30 12:36:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:45,550 INFO L130 PetriNetUnfolder]: 8129/15289 cut-off events. [2023-08-30 12:36:45,551 INFO L131 PetriNetUnfolder]: For 42283/42298 co-relation queries the response was YES. [2023-08-30 12:36:45,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52767 conditions, 15289 events. 8129/15289 cut-off events. For 42283/42298 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 99515 event pairs, 1784 based on Foata normal form. 1337/15865 useless extension candidates. Maximal degree in co-relation 46331. Up to 11200 conditions per place. [2023-08-30 12:36:45,690 INFO L137 encePairwiseOnDemand]: 552/558 looper letters, 196 selfloop transitions, 9 changer transitions 0/218 dead transitions. [2023-08-30 12:36:45,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 218 transitions, 2923 flow [2023-08-30 12:36:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:36:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:36:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-08-30 12:36:45,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526284348864994 [2023-08-30 12:36:45,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-08-30 12:36:45,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-08-30 12:36:45,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:45,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-08-30 12:36:45,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:45,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:45,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:45,694 INFO L175 Difference]: Start difference. First operand has 234 places, 205 transitions, 2436 flow. Second operand 3 states and 881 transitions. [2023-08-30 12:36:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 218 transitions, 2923 flow [2023-08-30 12:36:45,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 218 transitions, 2919 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:36:45,836 INFO L231 Difference]: Finished difference. Result has 234 places, 205 transitions, 2450 flow [2023-08-30 12:36:45,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2450, PETRI_PLACES=234, PETRI_TRANSITIONS=205} [2023-08-30 12:36:45,837 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 158 predicate places. [2023-08-30 12:36:45,837 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 205 transitions, 2450 flow [2023-08-30 12:36:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:45,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:45,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:36:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 12:36:45,838 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:45,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash -635526647, now seen corresponding path program 1 times [2023-08-30 12:36:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086549641] [2023-08-30 12:36:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:46,191 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 12:36:46,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:46,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086549641] [2023-08-30 12:36:46,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086549641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:46,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:46,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 12:36:46,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933272007] [2023-08-30 12:36:46,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:46,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:36:46,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:36:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-30 12:36:46,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 558 [2023-08-30 12:36:46,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 205 transitions, 2450 flow. Second operand has 9 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:46,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:46,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 558 [2023-08-30 12:36:46,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:48,869 INFO L130 PetriNetUnfolder]: 7796/14857 cut-off events. [2023-08-30 12:36:48,869 INFO L131 PetriNetUnfolder]: For 41153/41222 co-relation queries the response was YES. [2023-08-30 12:36:48,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52754 conditions, 14857 events. 7796/14857 cut-off events. For 41153/41222 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 98207 event pairs, 1943 based on Foata normal form. 23/14190 useless extension candidates. Maximal degree in co-relation 46618. Up to 4394 conditions per place. [2023-08-30 12:36:48,997 INFO L137 encePairwiseOnDemand]: 543/558 looper letters, 207 selfloop transitions, 62 changer transitions 1/276 dead transitions. [2023-08-30 12:36:48,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 276 transitions, 3326 flow [2023-08-30 12:36:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:36:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:36:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2358 transitions. [2023-08-30 12:36:48,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2023-08-30 12:36:48,999 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2358 transitions. [2023-08-30 12:36:49,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2358 transitions. [2023-08-30 12:36:49,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:49,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2358 transitions. [2023-08-30 12:36:49,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:49,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 558.0) internal successors, (5580), 10 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:49,003 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 558.0) internal successors, (5580), 10 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:49,003 INFO L175 Difference]: Start difference. First operand has 234 places, 205 transitions, 2450 flow. Second operand 9 states and 2358 transitions. [2023-08-30 12:36:49,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 276 transitions, 3326 flow [2023-08-30 12:36:49,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 276 transitions, 3308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:36:49,141 INFO L231 Difference]: Finished difference. Result has 244 places, 209 transitions, 2644 flow [2023-08-30 12:36:49,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2644, PETRI_PLACES=244, PETRI_TRANSITIONS=209} [2023-08-30 12:36:49,142 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 168 predicate places. [2023-08-30 12:36:49,142 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 209 transitions, 2644 flow [2023-08-30 12:36:49,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 250.55555555555554) internal successors, (2255), 9 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:49,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:49,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:36:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 12:36:49,143 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:49,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash -420185818, now seen corresponding path program 1 times [2023-08-30 12:36:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:49,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710926515] [2023-08-30 12:36:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:49,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:50,011 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 12:36:50,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:50,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710926515] [2023-08-30 12:36:50,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710926515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:50,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:50,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 12:36:50,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815024560] [2023-08-30 12:36:50,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:50,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:36:50,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:36:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:36:51,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 558 [2023-08-30 12:36:51,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 209 transitions, 2644 flow. Second operand has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:51,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:51,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 558 [2023-08-30 12:36:51,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:36:54,325 INFO L130 PetriNetUnfolder]: 8274/15821 cut-off events. [2023-08-30 12:36:54,326 INFO L131 PetriNetUnfolder]: For 47160/47211 co-relation queries the response was YES. [2023-08-30 12:36:54,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56473 conditions, 15821 events. 8274/15821 cut-off events. For 47160/47211 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 106989 event pairs, 2519 based on Foata normal form. 17/15267 useless extension candidates. Maximal degree in co-relation 55246. Up to 4469 conditions per place. [2023-08-30 12:36:54,433 INFO L137 encePairwiseOnDemand]: 536/558 looper letters, 364 selfloop transitions, 120 changer transitions 7/497 dead transitions. [2023-08-30 12:36:54,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 497 transitions, 4999 flow [2023-08-30 12:36:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 12:36:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 12:36:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7877 transitions. [2023-08-30 12:36:54,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411402329749104 [2023-08-30 12:36:54,440 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7877 transitions. [2023-08-30 12:36:54,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7877 transitions. [2023-08-30 12:36:54,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:36:54,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7877 transitions. [2023-08-30 12:36:54,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 246.15625) internal successors, (7877), 32 states have internal predecessors, (7877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:54,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 558.0) internal successors, (18414), 33 states have internal predecessors, (18414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:54,459 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 558.0) internal successors, (18414), 33 states have internal predecessors, (18414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:54,459 INFO L175 Difference]: Start difference. First operand has 244 places, 209 transitions, 2644 flow. Second operand 32 states and 7877 transitions. [2023-08-30 12:36:54,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 497 transitions, 4999 flow [2023-08-30 12:36:54,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 497 transitions, 4941 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 12:36:54,642 INFO L231 Difference]: Finished difference. Result has 275 places, 224 transitions, 3007 flow [2023-08-30 12:36:54,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3007, PETRI_PLACES=275, PETRI_TRANSITIONS=224} [2023-08-30 12:36:54,642 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 199 predicate places. [2023-08-30 12:36:54,642 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 224 transitions, 3007 flow [2023-08-30 12:36:54,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 237.0) internal successors, (3792), 16 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:54,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:36:54,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:36:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 12:36:54,643 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:36:54,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:36:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -176405184, now seen corresponding path program 2 times [2023-08-30 12:36:54,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:36:54,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777699924] [2023-08-30 12:36:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:36:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:36:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:36:56,015 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 12:36:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:36:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777699924] [2023-08-30 12:36:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777699924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:36:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:36:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 12:36:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037829249] [2023-08-30 12:36:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:36:56,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 12:36:56,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:36:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 12:36:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-08-30 12:36:57,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 558 [2023-08-30 12:36:57,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 224 transitions, 3007 flow. Second operand has 19 states, 19 states have (on average 225.68421052631578) internal successors, (4288), 19 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:36:57,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:36:57,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 558 [2023-08-30 12:36:57,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:37:00,859 INFO L130 PetriNetUnfolder]: 8266/15868 cut-off events. [2023-08-30 12:37:00,860 INFO L131 PetriNetUnfolder]: For 52372/52428 co-relation queries the response was YES. [2023-08-30 12:37:00,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58327 conditions, 15868 events. 8266/15868 cut-off events. For 52372/52428 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 107465 event pairs, 3740 based on Foata normal form. 38/15398 useless extension candidates. Maximal degree in co-relation 57025. Up to 9290 conditions per place. [2023-08-30 12:37:00,987 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 262 selfloop transitions, 76 changer transitions 12/356 dead transitions. [2023-08-30 12:37:00,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 356 transitions, 4348 flow [2023-08-30 12:37:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:37:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:37:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4447 transitions. [2023-08-30 12:37:00,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419449160535748 [2023-08-30 12:37:00,992 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4447 transitions. [2023-08-30 12:37:00,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4447 transitions. [2023-08-30 12:37:00,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:37:00,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4447 transitions. [2023-08-30 12:37:00,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 234.05263157894737) internal successors, (4447), 19 states have internal predecessors, (4447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:01,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 558.0) internal successors, (11160), 20 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:01,003 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 558.0) internal successors, (11160), 20 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:01,003 INFO L175 Difference]: Start difference. First operand has 275 places, 224 transitions, 3007 flow. Second operand 19 states and 4447 transitions. [2023-08-30 12:37:01,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 356 transitions, 4348 flow [2023-08-30 12:37:01,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 356 transitions, 4101 flow, removed 10 selfloop flow, removed 21 redundant places. [2023-08-30 12:37:01,191 INFO L231 Difference]: Finished difference. Result has 275 places, 230 transitions, 3001 flow [2023-08-30 12:37:01,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3001, PETRI_PLACES=275, PETRI_TRANSITIONS=230} [2023-08-30 12:37:01,192 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 199 predicate places. [2023-08-30 12:37:01,192 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 230 transitions, 3001 flow [2023-08-30 12:37:01,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 225.68421052631578) internal successors, (4288), 19 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:01,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:37:01,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:37:01,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 12:37:01,193 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:37:01,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:37:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash 994909586, now seen corresponding path program 3 times [2023-08-30 12:37:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:37:01,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262636336] [2023-08-30 12:37:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:37:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:37:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:37:02,237 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 12:37:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:37:02,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262636336] [2023-08-30 12:37:02,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262636336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:37:02,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:37:02,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 12:37:02,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307598109] [2023-08-30 12:37:02,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:37:02,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 12:37:02,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:37:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 12:37:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-08-30 12:37:04,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 558 [2023-08-30 12:37:04,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 230 transitions, 3001 flow. Second operand has 19 states, 19 states have (on average 233.68421052631578) internal successors, (4440), 19 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:04,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:37:04,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 558 [2023-08-30 12:37:04,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:37:07,672 INFO L130 PetriNetUnfolder]: 8258/15787 cut-off events. [2023-08-30 12:37:07,672 INFO L131 PetriNetUnfolder]: For 52621/52684 co-relation queries the response was YES. [2023-08-30 12:37:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57980 conditions, 15787 events. 8258/15787 cut-off events. For 52621/52684 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 106042 event pairs, 1385 based on Foata normal form. 87/15347 useless extension candidates. Maximal degree in co-relation 57158. Up to 5312 conditions per place. [2023-08-30 12:37:07,795 INFO L137 encePairwiseOnDemand]: 537/558 looper letters, 273 selfloop transitions, 132 changer transitions 7/418 dead transitions. [2023-08-30 12:37:07,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 418 transitions, 4637 flow [2023-08-30 12:37:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 12:37:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 12:37:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5826 transitions. [2023-08-30 12:37:07,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350358422939068 [2023-08-30 12:37:07,799 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5826 transitions. [2023-08-30 12:37:07,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5826 transitions. [2023-08-30 12:37:07,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:37:07,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5826 transitions. [2023-08-30 12:37:07,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 242.75) internal successors, (5826), 24 states have internal predecessors, (5826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:07,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:07,808 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:07,808 INFO L175 Difference]: Start difference. First operand has 275 places, 230 transitions, 3001 flow. Second operand 24 states and 5826 transitions. [2023-08-30 12:37:07,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 418 transitions, 4637 flow [2023-08-30 12:37:07,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 418 transitions, 4480 flow, removed 4 selfloop flow, removed 15 redundant places. [2023-08-30 12:37:07,985 INFO L231 Difference]: Finished difference. Result has 285 places, 235 transitions, 3198 flow [2023-08-30 12:37:07,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3198, PETRI_PLACES=285, PETRI_TRANSITIONS=235} [2023-08-30 12:37:07,986 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 209 predicate places. [2023-08-30 12:37:07,986 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 235 transitions, 3198 flow [2023-08-30 12:37:07,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 233.68421052631578) internal successors, (4440), 19 states have internal predecessors, (4440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:07,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:37:07,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:37:07,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 12:37:07,987 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:37:07,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:37:07,987 INFO L85 PathProgramCache]: Analyzing trace with hash -26871209, now seen corresponding path program 2 times [2023-08-30 12:37:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:37:07,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101081739] [2023-08-30 12:37:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:37:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:37:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:37:09,319 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 12:37:09,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:37:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101081739] [2023-08-30 12:37:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101081739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:37:09,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:37:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-08-30 12:37:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315462157] [2023-08-30 12:37:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:37:09,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 12:37:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:37:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 12:37:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-08-30 12:37:10,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 558 [2023-08-30 12:37:10,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 235 transitions, 3198 flow. Second operand has 19 states, 19 states have (on average 229.68421052631578) internal successors, (4364), 19 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:10,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:37:10,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 558 [2023-08-30 12:37:10,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:37:13,124 INFO L130 PetriNetUnfolder]: 8321/16031 cut-off events. [2023-08-30 12:37:13,124 INFO L131 PetriNetUnfolder]: For 54859/54889 co-relation queries the response was YES. [2023-08-30 12:37:13,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59903 conditions, 16031 events. 8321/16031 cut-off events. For 54859/54889 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 108838 event pairs, 1651 based on Foata normal form. 50/15569 useless extension candidates. Maximal degree in co-relation 56823. Up to 7031 conditions per place. [2023-08-30 12:37:13,255 INFO L137 encePairwiseOnDemand]: 540/558 looper letters, 253 selfloop transitions, 85 changer transitions 12/356 dead transitions. [2023-08-30 12:37:13,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 356 transitions, 4484 flow [2023-08-30 12:37:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 12:37:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 12:37:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4282 transitions. [2023-08-30 12:37:13,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263241736360016 [2023-08-30 12:37:13,258 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4282 transitions. [2023-08-30 12:37:13,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4282 transitions. [2023-08-30 12:37:13,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:37:13,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4282 transitions. [2023-08-30 12:37:13,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 237.88888888888889) internal successors, (4282), 18 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:13,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:13,265 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 558.0) internal successors, (10602), 19 states have internal predecessors, (10602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:13,265 INFO L175 Difference]: Start difference. First operand has 285 places, 235 transitions, 3198 flow. Second operand 18 states and 4282 transitions. [2023-08-30 12:37:13,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 356 transitions, 4484 flow [2023-08-30 12:37:13,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 356 transitions, 4237 flow, removed 13 selfloop flow, removed 19 redundant places. [2023-08-30 12:37:13,473 INFO L231 Difference]: Finished difference. Result has 285 places, 237 transitions, 3197 flow [2023-08-30 12:37:13,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3197, PETRI_PLACES=285, PETRI_TRANSITIONS=237} [2023-08-30 12:37:13,473 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 209 predicate places. [2023-08-30 12:37:13,473 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 237 transitions, 3197 flow [2023-08-30 12:37:13,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 229.68421052631578) internal successors, (4364), 19 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:13,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:37:13,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:37:13,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 12:37:13,474 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:37:13,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:37:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2072442385, now seen corresponding path program 1 times [2023-08-30 12:37:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:37:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000215302] [2023-08-30 12:37:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:37:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:37:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:37:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:37:14,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:37:14,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000215302] [2023-08-30 12:37:14,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000215302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:37:14,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:37:14,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 12:37:14,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828986047] [2023-08-30 12:37:14,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:37:14,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:37:14,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:37:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:37:14,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:37:15,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 558 [2023-08-30 12:37:15,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 237 transitions, 3197 flow. Second operand has 16 states, 16 states have (on average 241.1875) internal successors, (3859), 16 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:15,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:37:15,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 558 [2023-08-30 12:37:15,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:37:18,761 INFO L130 PetriNetUnfolder]: 9135/17541 cut-off events. [2023-08-30 12:37:18,762 INFO L131 PetriNetUnfolder]: For 61969/62038 co-relation queries the response was YES. [2023-08-30 12:37:18,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65612 conditions, 17541 events. 9135/17541 cut-off events. For 61969/62038 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 121367 event pairs, 5694 based on Foata normal form. 23/16979 useless extension candidates. Maximal degree in co-relation 62564. Up to 13426 conditions per place. [2023-08-30 12:37:19,187 INFO L137 encePairwiseOnDemand]: 544/558 looper letters, 297 selfloop transitions, 39 changer transitions 8/350 dead transitions. [2023-08-30 12:37:19,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 350 transitions, 4546 flow [2023-08-30 12:37:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 12:37:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 12:37:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3039 transitions. [2023-08-30 12:37:19,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538530465949821 [2023-08-30 12:37:19,194 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3039 transitions. [2023-08-30 12:37:19,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3039 transitions. [2023-08-30 12:37:19,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:37:19,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3039 transitions. [2023-08-30 12:37:19,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 253.25) internal successors, (3039), 12 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:19,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:19,201 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:19,201 INFO L175 Difference]: Start difference. First operand has 285 places, 237 transitions, 3197 flow. Second operand 12 states and 3039 transitions. [2023-08-30 12:37:19,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 350 transitions, 4546 flow [2023-08-30 12:37:19,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 350 transitions, 4432 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 12:37:19,417 INFO L231 Difference]: Finished difference. Result has 288 places, 242 transitions, 3269 flow [2023-08-30 12:37:19,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3269, PETRI_PLACES=288, PETRI_TRANSITIONS=242} [2023-08-30 12:37:19,418 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 212 predicate places. [2023-08-30 12:37:19,418 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 242 transitions, 3269 flow [2023-08-30 12:37:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 241.1875) internal successors, (3859), 16 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:37:19,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:37:19,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:37:19,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 12:37:19,419 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2023-08-30 12:37:19,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:37:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash -136744271, now seen corresponding path program 1 times [2023-08-30 12:37:19,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:37:19,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693971711] [2023-08-30 12:37:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:37:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:37:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat