./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c -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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:07:12,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:07:12,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:07:12,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:07:12,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:07:12,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:07:12,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:07:12,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:07:12,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:07:12,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:07:12,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:07:12,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:07:12,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:07:12,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:07:12,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:07:12,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:07:12,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:07:12,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:07:12,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:07:12,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:07:12,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:07:12,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:07:12,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:07:12,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:07:12,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:07:12,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:07:12,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:07:12,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:07:12,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:07:12,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:07:12,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:07:12,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:07:12,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:07:12,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:07:12,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:07:12,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:07:12,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:07:12,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:07:12,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:07:12,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:07:12,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:07:12,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:07:12,559 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:07:12,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:07:12,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:07:12,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:07:12,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:07:12,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:07:12,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:07:12,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:07:12,562 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:07:12,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:07:12,563 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:07:12,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:07:12,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:07:12,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:07:12,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:07:12,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:07:12,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:07:12,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:07:12,564 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:07:12,564 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:07:12,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:07:12,565 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:07:12,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:07:12,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:07:12,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:07:12,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:07:12,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:07:12,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:07:12,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:07:12,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:07:12,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:07:12,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:07:12,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:07:12,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:07:12,567 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:07:12,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:07:12,567 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:07:12,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:07:12,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:07:12,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:07:12,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:07:12,828 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:07:12,828 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:07:12,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-30 11:07:13,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:07:14,036 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:07:14,036 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2023-08-30 11:07:14,041 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b83fa06/481f7d601de9493abe7b72736dd6863f/FLAG5fafa8611 [2023-08-30 11:07:14,052 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b83fa06/481f7d601de9493abe7b72736dd6863f [2023-08-30 11:07:14,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:07:14,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:07:14,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:07:14,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:07:14,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:07:14,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a3877f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14, skipping insertion in model container [2023-08-30 11:07:14,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:07:14,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:07:14,236 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2023-08-30 11:07:14,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:07:14,249 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:07:14,281 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2023-08-30 11:07:14,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:07:14,299 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:07:14,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14 WrapperNode [2023-08-30 11:07:14,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:07:14,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:07:14,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:07:14,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:07:14,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,353 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 187 [2023-08-30 11:07:14,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:07:14,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:07:14,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:07:14,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:07:14,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:07:14,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:07:14,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:07:14,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:07:14,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (1/1) ... [2023-08-30 11:07:14,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:07:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:14,426 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 11:07:14,436 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 11:07:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:07:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:07:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:07:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:07:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:07:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:07:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:07:14,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:07:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:07:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:07:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:07:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:07:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:07:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:07:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:07:14,453 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 11:07:14,525 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:07:14,526 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:07:14,970 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:07:14,976 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:07:14,976 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:07:14,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:07:14 BoogieIcfgContainer [2023-08-30 11:07:14,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:07:14,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:07:14,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:07:14,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:07:14,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:07:14" (1/3) ... [2023-08-30 11:07:14,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a72f203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:07:14, skipping insertion in model container [2023-08-30 11:07:14,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:07:14" (2/3) ... [2023-08-30 11:07:14,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a72f203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:07:14, skipping insertion in model container [2023-08-30 11:07:14,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:07:14" (3/3) ... [2023-08-30 11:07:14,983 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-08-30 11:07:14,994 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:07:15,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:07:15,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 11:07:15,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:07:15,061 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:07:15,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 674 flow [2023-08-30 11:07:15,157 INFO L130 PetriNetUnfolder]: 28/322 cut-off events. [2023-08-30 11:07:15,157 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:07:15,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 322 events. 28/322 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-08-30 11:07:15,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 674 flow [2023-08-30 11:07:15,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 287 places, 304 transitions, 623 flow [2023-08-30 11:07:15,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:07:15,178 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 304 transitions, 623 flow [2023-08-30 11:07:15,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 304 transitions, 623 flow [2023-08-30 11:07:15,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 304 transitions, 623 flow [2023-08-30 11:07:15,227 INFO L130 PetriNetUnfolder]: 27/304 cut-off events. [2023-08-30 11:07:15,227 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:07:15,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 304 events. 27/304 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 260. Up to 3 conditions per place. [2023-08-30 11:07:15,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2023-08-30 11:07:22,641 INFO L134 LiptonReduction]: Checked pairs total: 15141 [2023-08-30 11:07:22,641 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-30 11:07:22,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:07:22,667 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;@af74db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:07:22,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-30 11:07:22,671 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:07:22,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:07:22,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:22,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:07:22,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:22,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:22,678 INFO L85 PathProgramCache]: Analyzing trace with hash 39699, now seen corresponding path program 1 times [2023-08-30 11:07:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257497389] [2023-08-30 11:07:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:22,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:22,919 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 11:07:22,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:22,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257497389] [2023-08-30 11:07:22,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257497389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:22,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:22,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:07:22,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736979885] [2023-08-30 11:07:22,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:22,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:22,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 11:07:22,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:23,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:23,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 11:07:23,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:24,089 INFO L130 PetriNetUnfolder]: 12137/16403 cut-off events. [2023-08-30 11:07:24,090 INFO L131 PetriNetUnfolder]: For 588/588 co-relation queries the response was YES. [2023-08-30 11:07:24,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33511 conditions, 16403 events. 12137/16403 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 82956 event pairs, 8860 based on Foata normal form. 0/8047 useless extension candidates. Maximal degree in co-relation 15562. Up to 8206 conditions per place. [2023-08-30 11:07:24,161 INFO L137 encePairwiseOnDemand]: 640/652 looper letters, 101 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2023-08-30 11:07:24,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 107 transitions, 458 flow [2023-08-30 11:07:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2023-08-30 11:07:24,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117586912065439 [2023-08-30 11:07:24,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2023-08-30 11:07:24,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2023-08-30 11:07:24,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:24,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2023-08-30 11:07:24,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,237 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1001 transitions. [2023-08-30 11:07:24,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 107 transitions, 458 flow [2023-08-30 11:07:24,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 440 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:07:24,260 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2023-08-30 11:07:24,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-08-30 11:07:24,264 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 11:07:24,264 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2023-08-30 11:07:24,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:24,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:07:24,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:07:24,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:24,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1231866, now seen corresponding path program 1 times [2023-08-30 11:07:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483759159] [2023-08-30 11:07:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:24,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:24,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483759159] [2023-08-30 11:07:24,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483759159] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:24,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263172428] [2023-08-30 11:07:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:24,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:24,371 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 11:07:24,380 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 11:07:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:24,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:07:24,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:24,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:24,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263172428] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:24,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:24,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:07:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145566078] [2023-08-30 11:07:24,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:24,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:07:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:07:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:07:24,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 11:07:24,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:24,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:24,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 11:07:24,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:26,750 INFO L130 PetriNetUnfolder]: 30350/41006 cut-off events. [2023-08-30 11:07:26,750 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-08-30 11:07:26,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83339 conditions, 41006 events. 30350/41006 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 231119 event pairs, 22150 based on Foata normal form. 0/20131 useless extension candidates. Maximal degree in co-relation 66587. Up to 8204 conditions per place. [2023-08-30 11:07:26,940 INFO L137 encePairwiseOnDemand]: 640/652 looper letters, 233 selfloop transitions, 33 changer transitions 0/266 dead transitions. [2023-08-30 11:07:26,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 266 transitions, 1200 flow [2023-08-30 11:07:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:07:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:07:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2347 transitions. [2023-08-30 11:07:26,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142418930762489 [2023-08-30 11:07:26,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2347 transitions. [2023-08-30 11:07:26,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2347 transitions. [2023-08-30 11:07:26,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:26,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2347 transitions. [2023-08-30 11:07:26,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.2857142857143) internal successors, (2347), 7 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,956 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 7 states and 2347 transitions. [2023-08-30 11:07:26,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 266 transitions, 1200 flow [2023-08-30 11:07:26,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 266 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:26,960 INFO L231 Difference]: Finished difference. Result has 62 places, 86 transitions, 383 flow [2023-08-30 11:07:26,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=62, PETRI_TRANSITIONS=86} [2023-08-30 11:07:26,961 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-30 11:07:26,962 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 86 transitions, 383 flow [2023-08-30 11:07:26,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:26,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:26,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:07:26,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:07:27,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:27,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:27,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:27,171 INFO L85 PathProgramCache]: Analyzing trace with hash 38189045, now seen corresponding path program 1 times [2023-08-30 11:07:27,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:27,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591239329] [2023-08-30 11:07:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:27,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:07:27,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591239329] [2023-08-30 11:07:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591239329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:27,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:27,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:27,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687096531] [2023-08-30 11:07:27,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:27,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:27,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:27,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:27,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 11:07:27,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 86 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:27,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:27,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 11:07:27,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:29,039 INFO L130 PetriNetUnfolder]: 30341/40994 cut-off events. [2023-08-30 11:07:29,039 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 11:07:29,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83342 conditions, 40994 events. 30341/40994 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 232605 event pairs, 22150 based on Foata normal form. 2/20132 useless extension candidates. Maximal degree in co-relation 49977. Up to 40994 conditions per place. [2023-08-30 11:07:29,163 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 73 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-30 11:07:29,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 450 flow [2023-08-30 11:07:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 945 transitions. [2023-08-30 11:07:29,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831288343558282 [2023-08-30 11:07:29,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 945 transitions. [2023-08-30 11:07:29,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 945 transitions. [2023-08-30 11:07:29,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:29,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 945 transitions. [2023-08-30 11:07:29,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,171 INFO L175 Difference]: Start difference. First operand has 62 places, 86 transitions, 383 flow. Second operand 3 states and 945 transitions. [2023-08-30 11:07:29,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 450 flow [2023-08-30 11:07:29,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 420 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:29,174 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 274 flow [2023-08-30 11:07:29,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2023-08-30 11:07:29,175 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 11:07:29,175 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 274 flow [2023-08-30 11:07:29,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:29,176 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:07:29,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:07:29,176 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:29,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1954997037, now seen corresponding path program 2 times [2023-08-30 11:07:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:29,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508848466] [2023-08-30 11:07:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:29,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508848466] [2023-08-30 11:07:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508848466] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006079987] [2023-08-30 11:07:29,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:07:29,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:29,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:29,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:07:29,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:07:29,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:07:29,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:07:29,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:07:29,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:07:29,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006079987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:29,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:07:29,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:07:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638720963] [2023-08-30 11:07:29,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:29,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:07:29,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 652 [2023-08-30 11:07:29,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:29,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:29,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 652 [2023-08-30 11:07:29,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:31,310 INFO L130 PetriNetUnfolder]: 30341/40993 cut-off events. [2023-08-30 11:07:31,310 INFO L131 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2023-08-30 11:07:31,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83320 conditions, 40993 events. 30341/40993 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 232630 event pairs, 22150 based on Foata normal form. 1/20132 useless extension candidates. Maximal degree in co-relation 83308. Up to 40988 conditions per place. [2023-08-30 11:07:31,447 INFO L137 encePairwiseOnDemand]: 649/652 looper letters, 67 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-30 11:07:31,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 410 flow [2023-08-30 11:07:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2023-08-30 11:07:31,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48619631901840493 [2023-08-30 11:07:31,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2023-08-30 11:07:31,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2023-08-30 11:07:31,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:31,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2023-08-30 11:07:31,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,457 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 274 flow. Second operand 3 states and 951 transitions. [2023-08-30 11:07:31,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 410 flow [2023-08-30 11:07:31,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:07:31,460 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2023-08-30 11:07:31,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2023-08-30 11:07:31,461 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-30 11:07:31,461 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2023-08-30 11:07:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:31,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:31,462 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:07:31,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:07:31,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:07:31,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:31,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 721333687, now seen corresponding path program 1 times [2023-08-30 11:07:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:31,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724994606] [2023-08-30 11:07:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:31,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:31,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:31,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724994606] [2023-08-30 11:07:31,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724994606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:07:31,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409380029] [2023-08-30 11:07:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:31,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:31,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:07:31,790 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:07:31,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:07:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:31,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:07:31,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:07:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:31,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:07:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:07:31,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409380029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:07:31,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:07:31,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:07:31,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611274185] [2023-08-30 11:07:31,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:07:31,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:07:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:07:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:07:32,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 652 [2023-08-30 11:07:32,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 297.15384615384613) internal successors, (3863), 13 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:32,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:32,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 652 [2023-08-30 11:07:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:36,787 INFO L130 PetriNetUnfolder]: 66749/90181 cut-off events. [2023-08-30 11:07:36,787 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-30 11:07:36,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183280 conditions, 90181 events. 66749/90181 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 2333. Compared 532521 event pairs, 48730 based on Foata normal form. 12/44294 useless extension candidates. Maximal degree in co-relation 183267. Up to 9317 conditions per place. [2023-08-30 11:07:37,147 INFO L137 encePairwiseOnDemand]: 644/652 looper letters, 502 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2023-08-30 11:07:37,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 553 transitions, 2521 flow [2023-08-30 11:07:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:07:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:07:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4117 transitions. [2023-08-30 11:07:37,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262014314928425 [2023-08-30 11:07:37,155 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4117 transitions. [2023-08-30 11:07:37,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4117 transitions. [2023-08-30 11:07:37,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:37,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4117 transitions. [2023-08-30 11:07:37,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 343.0833333333333) internal successors, (4117), 12 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:37,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 652.0) internal successors, (8476), 13 states have internal predecessors, (8476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:37,170 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 652.0) internal successors, (8476), 13 states have internal predecessors, (8476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:37,171 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4117 transitions. [2023-08-30 11:07:37,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 553 transitions, 2521 flow [2023-08-30 11:07:37,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 553 transitions, 2497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:07:37,176 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2023-08-30 11:07:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2023-08-30 11:07:37,177 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-30 11:07:37,177 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2023-08-30 11:07:37,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 297.15384615384613) internal successors, (3863), 13 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:37,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:37,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:37,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:07:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:07:37,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:37,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1500592319, now seen corresponding path program 1 times [2023-08-30 11:07:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549885578] [2023-08-30 11:07:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:37,441 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 11:07:37,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:37,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549885578] [2023-08-30 11:07:37,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549885578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:37,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:37,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:37,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729081718] [2023-08-30 11:07:37,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:37,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:07:37,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:37,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:07:37,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:07:37,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-08-30 11:07:37,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 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 11:07:37,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:37,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-08-30 11:07:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:07:45,809 INFO L130 PetriNetUnfolder]: 115501/156445 cut-off events. [2023-08-30 11:07:45,810 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2023-08-30 11:07:46,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317922 conditions, 156445 events. 115501/156445 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 4296. Compared 1037341 event pairs, 48730 based on Foata normal form. 0/78583 useless extension candidates. Maximal degree in co-relation 317903. Up to 90182 conditions per place. [2023-08-30 11:07:46,853 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 140 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2023-08-30 11:07:46,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 978 flow [2023-08-30 11:07:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:07:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:07:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2023-08-30 11:07:46,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127811860940695 [2023-08-30 11:07:46,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2023-08-30 11:07:46,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2023-08-30 11:07:46,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:07:46,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2023-08-30 11:07:46,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:46,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:46,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:46,891 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1003 transitions. [2023-08-30 11:07:46,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 978 flow [2023-08-30 11:07:46,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 834 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 11:07:46,896 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2023-08-30 11:07:46,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2023-08-30 11:07:46,898 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2023-08-30 11:07:46,898 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2023-08-30 11:07:46,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 11:07:46,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:07:46,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:07:46,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:07:46,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:07:46,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:07:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1500593717, now seen corresponding path program 1 times [2023-08-30 11:07:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:07:46,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115577490] [2023-08-30 11:07:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:07:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:07:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:07:46,981 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 11:07:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:07:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115577490] [2023-08-30 11:07:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115577490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:07:46,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:07:46,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:07:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839340607] [2023-08-30 11:07:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:07:46,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:07:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:07:46,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:07:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:07:47,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 652 [2023-08-30 11:07:47,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:07:47,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:07:47,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 652 [2023-08-30 11:07:47,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:07,181 INFO L130 PetriNetUnfolder]: 223094/300503 cut-off events. [2023-08-30 11:08:07,182 INFO L131 PetriNetUnfolder]: For 22477/22477 co-relation queries the response was YES. [2023-08-30 11:08:08,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634815 conditions, 300503 events. 223094/300503 cut-off events. For 22477/22477 co-relation queries the response was YES. Maximal size of possible extension queue 7292. Compared 2032919 event pairs, 162656 based on Foata normal form. 0/165484 useless extension candidates. Maximal degree in co-relation 634796. Up to 145752 conditions per place. [2023-08-30 11:08:09,243 INFO L137 encePairwiseOnDemand]: 645/652 looper letters, 224 selfloop transitions, 6 changer transitions 0/230 dead transitions. [2023-08-30 11:08:09,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 230 transitions, 1400 flow [2023-08-30 11:08:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:08:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:08:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1603 transitions. [2023-08-30 11:08:09,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49171779141104294 [2023-08-30 11:08:09,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1603 transitions. [2023-08-30 11:08:09,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1603 transitions. [2023-08-30 11:08:09,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:09,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1603 transitions. [2023-08-30 11:08:09,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 320.6) internal successors, (1603), 5 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 652.0) internal successors, (3912), 6 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 652.0) internal successors, (3912), 6 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,256 INFO L175 Difference]: Start difference. First operand has 72 places, 104 transitions, 481 flow. Second operand 5 states and 1603 transitions. [2023-08-30 11:08:09,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 230 transitions, 1400 flow [2023-08-30 11:08:09,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 230 transitions, 1394 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:08:09,309 INFO L231 Difference]: Finished difference. Result has 78 places, 107 transitions, 524 flow [2023-08-30 11:08:09,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=78, PETRI_TRANSITIONS=107} [2023-08-30 11:08:09,309 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-08-30 11:08:09,310 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 107 transitions, 524 flow [2023-08-30 11:08:09,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:09,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:09,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:08:09,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:08:09,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1500593589, now seen corresponding path program 1 times [2023-08-30 11:08:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012416972] [2023-08-30 11:08:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:09,373 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 11:08:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:09,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012416972] [2023-08-30 11:08:09,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012416972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:09,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:09,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:08:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454660470] [2023-08-30 11:08:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:08:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:08:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:08:09,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 652 [2023-08-30 11:08:09,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 107 transitions, 524 flow. Second operand has 5 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:09,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:09,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 652 [2023-08-30 11:08:09,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:29,379 INFO L130 PetriNetUnfolder]: 207538/280675 cut-off events. [2023-08-30 11:08:29,379 INFO L131 PetriNetUnfolder]: For 41943/41943 co-relation queries the response was YES. [2023-08-30 11:08:30,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598358 conditions, 280675 events. 207538/280675 cut-off events. For 41943/41943 co-relation queries the response was YES. Maximal size of possible extension queue 6679. Compared 1902628 event pairs, 153224 based on Foata normal form. 8188/171804 useless extension candidates. Maximal degree in co-relation 598335. Up to 244620 conditions per place. [2023-08-30 11:08:31,560 INFO L137 encePairwiseOnDemand]: 645/652 looper letters, 124 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2023-08-30 11:08:31,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 150 transitions, 924 flow [2023-08-30 11:08:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:08:31,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:08:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2023-08-30 11:08:31,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781441717791411 [2023-08-30 11:08:31,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2023-08-30 11:08:31,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2023-08-30 11:08:31,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:31,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2023-08-30 11:08:31,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:31,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:31,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:31,571 INFO L175 Difference]: Start difference. First operand has 78 places, 107 transitions, 524 flow. Second operand 4 states and 1247 transitions. [2023-08-30 11:08:31,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 150 transitions, 924 flow [2023-08-30 11:08:31,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 150 transitions, 916 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:08:31,607 INFO L231 Difference]: Finished difference. Result has 78 places, 105 transitions, 558 flow [2023-08-30 11:08:31,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=78, PETRI_TRANSITIONS=105} [2023-08-30 11:08:31,608 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-08-30 11:08:31,608 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 105 transitions, 558 flow [2023-08-30 11:08:31,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 287.6) internal successors, (1438), 5 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:31,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:31,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:08:31,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:08:31,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1792992732, now seen corresponding path program 1 times [2023-08-30 11:08:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:31,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475587150] [2023-08-30 11:08:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475587150] [2023-08-30 11:08:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475587150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:08:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205297868] [2023-08-30 11:08:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:31,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:08:31,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:08:31,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:08:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:31,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:08:31,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:08:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:08:31,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:08:31,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205297868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:31,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:08:31,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:08:31,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802389081] [2023-08-30 11:08:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:31,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:08:31,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:08:31,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:08:31,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 652 [2023-08-30 11:08:31,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 105 transitions, 558 flow. Second operand has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:31,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:31,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 652 [2023-08-30 11:08:31,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:08:49,407 INFO L130 PetriNetUnfolder]: 172695/233222 cut-off events. [2023-08-30 11:08:49,408 INFO L131 PetriNetUnfolder]: For 22655/22655 co-relation queries the response was YES. [2023-08-30 11:08:50,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492617 conditions, 233222 events. 172695/233222 cut-off events. For 22655/22655 co-relation queries the response was YES. Maximal size of possible extension queue 5630. Compared 1542671 event pairs, 124775 based on Foata normal form. 3432/141158 useless extension candidates. Maximal degree in co-relation 492594. Up to 233210 conditions per place. [2023-08-30 11:08:51,031 INFO L137 encePairwiseOnDemand]: 648/652 looper letters, 91 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2023-08-30 11:08:51,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 756 flow [2023-08-30 11:08:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:08:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:08:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1252 transitions. [2023-08-30 11:08:51,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48006134969325154 [2023-08-30 11:08:51,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1252 transitions. [2023-08-30 11:08:51,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1252 transitions. [2023-08-30 11:08:51,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:08:51,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1252 transitions. [2023-08-30 11:08:51,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:51,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:51,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 652.0) internal successors, (3260), 5 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:51,041 INFO L175 Difference]: Start difference. First operand has 78 places, 105 transitions, 558 flow. Second operand 4 states and 1252 transitions. [2023-08-30 11:08:51,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 756 flow [2023-08-30 11:08:51,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 727 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:08:51,067 INFO L231 Difference]: Finished difference. Result has 76 places, 103 transitions, 545 flow [2023-08-30 11:08:51,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=76, PETRI_TRANSITIONS=103} [2023-08-30 11:08:51,068 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-08-30 11:08:51,068 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 103 transitions, 545 flow [2023-08-30 11:08:51,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:51,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:08:51,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:08:51,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:08:51,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:08:51,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:08:51,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:08:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1039711662, now seen corresponding path program 1 times [2023-08-30 11:08:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:08:51,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272968569] [2023-08-30 11:08:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:08:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:08:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:08:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:08:51,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:08:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272968569] [2023-08-30 11:08:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272968569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:08:51,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:08:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:08:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618430329] [2023-08-30 11:08:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:08:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:08:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:08:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:08:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:08:51,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-08-30 11:08:51,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 103 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:08:51,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:08:51,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-08-30 11:08:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:08,158 INFO L130 PetriNetUnfolder]: 176559/240398 cut-off events. [2023-08-30 11:09:08,159 INFO L131 PetriNetUnfolder]: For 4587/4587 co-relation queries the response was YES. [2023-08-30 11:09:09,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503361 conditions, 240398 events. 176559/240398 cut-off events. For 4587/4587 co-relation queries the response was YES. Maximal size of possible extension queue 5927. Compared 1729426 event pairs, 17595 based on Foata normal form. 0/143798 useless extension candidates. Maximal degree in co-relation 503339. Up to 206310 conditions per place. [2023-08-30 11:09:09,708 INFO L137 encePairwiseOnDemand]: 650/652 looper letters, 130 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-08-30 11:09:09,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 131 transitions, 866 flow [2023-08-30 11:09:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:09:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:09:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2023-08-30 11:09:09,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051124744376279 [2023-08-30 11:09:09,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2023-08-30 11:09:09,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2023-08-30 11:09:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:09,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2023-08-30 11:09:09,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:09,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:09,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 652.0) internal successors, (2608), 4 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:09,728 INFO L175 Difference]: Start difference. First operand has 76 places, 103 transitions, 545 flow. Second operand 3 states and 988 transitions. [2023-08-30 11:09:09,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 131 transitions, 866 flow [2023-08-30 11:09:09,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 131 transitions, 853 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:09:09,754 INFO L231 Difference]: Finished difference. Result has 75 places, 102 transitions, 530 flow [2023-08-30 11:09:09,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2023-08-30 11:09:09,755 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-30 11:09:09,755 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 530 flow [2023-08-30 11:09:09,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:09,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:09,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:09,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:09:09,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:09:09,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:09,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1039711611, now seen corresponding path program 1 times [2023-08-30 11:09:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:09,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431223152] [2023-08-30 11:09:09,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:09:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431223152] [2023-08-30 11:09:10,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431223152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:10,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:10,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:09:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851685067] [2023-08-30 11:09:10,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:10,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:09:10,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:09:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:09:10,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 652 [2023-08-30 11:09:10,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 530 flow. Second operand has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:10,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:10,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 652 [2023-08-30 11:09:10,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:19,749 INFO L130 PetriNetUnfolder]: 115935/159326 cut-off events. [2023-08-30 11:09:19,750 INFO L131 PetriNetUnfolder]: For 15824/15824 co-relation queries the response was YES. [2023-08-30 11:09:20,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336428 conditions, 159326 events. 115935/159326 cut-off events. For 15824/15824 co-relation queries the response was YES. Maximal size of possible extension queue 4029. Compared 1066218 event pairs, 71495 based on Foata normal form. 0/95750 useless extension candidates. Maximal degree in co-relation 336407. Up to 114985 conditions per place. [2023-08-30 11:09:20,969 INFO L137 encePairwiseOnDemand]: 644/652 looper letters, 246 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2023-08-30 11:09:20,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 264 transitions, 1588 flow [2023-08-30 11:09:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:09:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:09:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2205 transitions. [2023-08-30 11:09:20,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831288343558282 [2023-08-30 11:09:20,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2205 transitions. [2023-08-30 11:09:20,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2205 transitions. [2023-08-30 11:09:20,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:20,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2205 transitions. [2023-08-30 11:09:20,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.0) internal successors, (2205), 7 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:20,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:20,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 652.0) internal successors, (5216), 8 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:20,981 INFO L175 Difference]: Start difference. First operand has 75 places, 102 transitions, 530 flow. Second operand 7 states and 2205 transitions. [2023-08-30 11:09:20,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 264 transitions, 1588 flow [2023-08-30 11:09:21,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 264 transitions, 1585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:21,014 INFO L231 Difference]: Finished difference. Result has 84 places, 115 transitions, 712 flow [2023-08-30 11:09:21,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=84, PETRI_TRANSITIONS=115} [2023-08-30 11:09:21,014 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 28 predicate places. [2023-08-30 11:09:21,014 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 115 transitions, 712 flow [2023-08-30 11:09:21,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:21,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:21,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:09:21,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:09:21,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1001924747, now seen corresponding path program 1 times [2023-08-30 11:09:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:21,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626480733] [2023-08-30 11:09:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:21,073 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 11:09:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:21,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626480733] [2023-08-30 11:09:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626480733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:21,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:21,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:09:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637054858] [2023-08-30 11:09:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:21,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:09:21,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:09:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:09:21,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 652 [2023-08-30 11:09:21,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 115 transitions, 712 flow. Second operand has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:21,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:21,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 652 [2023-08-30 11:09:21,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:09:39,228 INFO L130 PetriNetUnfolder]: 217086/297953 cut-off events. [2023-08-30 11:09:39,228 INFO L131 PetriNetUnfolder]: For 59215/59215 co-relation queries the response was YES. [2023-08-30 11:09:40,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651885 conditions, 297953 events. 217086/297953 cut-off events. For 59215/59215 co-relation queries the response was YES. Maximal size of possible extension queue 7324. Compared 2116727 event pairs, 153296 based on Foata normal form. 0/187205 useless extension candidates. Maximal degree in co-relation 651859. Up to 142377 conditions per place. [2023-08-30 11:09:41,356 INFO L137 encePairwiseOnDemand]: 646/652 looper letters, 219 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2023-08-30 11:09:41,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 236 transitions, 1582 flow [2023-08-30 11:09:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:09:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:09:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1880 transitions. [2023-08-30 11:09:41,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48057259713701433 [2023-08-30 11:09:41,360 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1880 transitions. [2023-08-30 11:09:41,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1880 transitions. [2023-08-30 11:09:41,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:09:41,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1880 transitions. [2023-08-30 11:09:41,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.3333333333333) internal successors, (1880), 6 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:41,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:41,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:41,366 INFO L175 Difference]: Start difference. First operand has 84 places, 115 transitions, 712 flow. Second operand 6 states and 1880 transitions. [2023-08-30 11:09:41,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 236 transitions, 1582 flow [2023-08-30 11:09:41,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 236 transitions, 1579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:09:41,468 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 783 flow [2023-08-30 11:09:41,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=783, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2023-08-30 11:09:41,469 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-08-30 11:09:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 783 flow [2023-08-30 11:09:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:41,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:09:41,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:09:41,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:09:41,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:09:41,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:09:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1001924854, now seen corresponding path program 1 times [2023-08-30 11:09:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:09:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558761434] [2023-08-30 11:09:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:09:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:09:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:09:41,528 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 11:09:41,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:09:41,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558761434] [2023-08-30 11:09:41,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558761434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:09:41,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:09:41,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 11:09:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914143182] [2023-08-30 11:09:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:09:41,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:09:41,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:09:41,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:09:41,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:09:41,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 652 [2023-08-30 11:09:41,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 783 flow. Second operand has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:09:41,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:09:41,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 652 [2023-08-30 11:09:41,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:10:00,156 INFO L130 PetriNetUnfolder]: 215358/295545 cut-off events. [2023-08-30 11:10:00,157 INFO L131 PetriNetUnfolder]: For 76094/76094 co-relation queries the response was YES. [2023-08-30 11:10:01,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664310 conditions, 295545 events. 215358/295545 cut-off events. For 76094/76094 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 2092344 event pairs, 152574 based on Foata normal form. 680/197225 useless extension candidates. Maximal degree in co-relation 664282. Up to 258803 conditions per place. [2023-08-30 11:10:02,526 INFO L137 encePairwiseOnDemand]: 646/652 looper letters, 144 selfloop transitions, 38 changer transitions 0/182 dead transitions. [2023-08-30 11:10:02,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 182 transitions, 1327 flow [2023-08-30 11:10:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:10:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:10:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1835 transitions. [2023-08-30 11:10:02,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690695296523517 [2023-08-30 11:10:02,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1835 transitions. [2023-08-30 11:10:02,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1835 transitions. [2023-08-30 11:10:02,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:10:02,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1835 transitions. [2023-08-30 11:10:02,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 305.8333333333333) internal successors, (1835), 6 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:02,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:02,536 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 652.0) internal successors, (4564), 7 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:02,536 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 783 flow. Second operand 6 states and 1835 transitions. [2023-08-30 11:10:02,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 182 transitions, 1327 flow [2023-08-30 11:10:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 182 transitions, 1321 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 11:10:02,661 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 933 flow [2023-08-30 11:10:02,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=652, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=933, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2023-08-30 11:10:02,661 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2023-08-30 11:10:02,662 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 933 flow [2023-08-30 11:10:02,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:02,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:10:02,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:10:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:10:02,662 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-30 11:10:02,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:10:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1001924796, now seen corresponding path program 1 times [2023-08-30 11:10:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:10:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067203654] [2023-08-30 11:10:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:10:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:10:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:10:02,691 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 11:10:02,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:10:02,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067203654] [2023-08-30 11:10:02,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067203654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:10:02,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:10:02,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:10:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354137332] [2023-08-30 11:10:02,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:10:02,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:10:02,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:10:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:10:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:10:02,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 652 [2023-08-30 11:10:02,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 933 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:10:02,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:10:02,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 652 [2023-08-30 11:10:02,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand