./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.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/popl20-proofs-counter-add-4-semi-Q67.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 ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 --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 11:54:12,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:54:12,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:54:12,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:54:12,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:54:12,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:54:12,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:54:12,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:54:12,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:54:12,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:54:12,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:54:12,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:54:12,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:54:12,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:54:12,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:54:12,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:54:12,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:54:12,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:54:12,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:54:12,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:54:12,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:54:12,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:54:12,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:54:12,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:54:12,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:54:12,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:54:12,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:54:12,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:54:12,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:54:12,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:54:12,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:54:12,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:54:12,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:54:12,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:54:12,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:54:12,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:54:12,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:54:12,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:54:12,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:54:12,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:54:12,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:54:12,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:54:12,464 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:54:12,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:54:12,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:54:12,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:54:12,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:54:12,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:54:12,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:54:12,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:54:12,467 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:54:12,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:54:12,468 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:54:12,468 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:54:12,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:54:12,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:54:12,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:54:12,470 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:54:12,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:54:12,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:54:12,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:54:12,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:54:12,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:54:12,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:54:12,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:54:12,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:54:12,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:54:12,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:54:12,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:54:12,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:54:12,472 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:54:12,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:54:12,472 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:54:12,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:54:12,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:54:12,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:54:12,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:54:12,780 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:54:12,781 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:54:12,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-30 11:54:13,876 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:54:14,022 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:54:14,022 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-30 11:54:14,039 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee4ffcdd/39f20e48a3744038a6673e2f924dd195/FLAGfb3926179 [2023-08-30 11:54:14,049 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee4ffcdd/39f20e48a3744038a6673e2f924dd195 [2023-08-30 11:54:14,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:54:14,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:54:14,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:54:14,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:54:14,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:54:14,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6cf67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14, skipping insertion in model container [2023-08-30 11:54:14,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:54:14,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:54:14,197 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/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-08-30 11:54:14,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:54:14,211 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:54:14,235 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/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-08-30 11:54:14,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:54:14,248 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:54:14,248 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:54:14,252 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:54:14,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14 WrapperNode [2023-08-30 11:54:14,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:54:14,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:54:14,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:54:14,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:54:14,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,296 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 145 [2023-08-30 11:54:14,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:54:14,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:54:14,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:54:14,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:54:14,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:54:14,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:54:14,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:54:14,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:54:14,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (1/1) ... [2023-08-30 11:54:14,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:54:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:54:14,394 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 11:54:14,412 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 11:54:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:54:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:54:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:54:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:54:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:54:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:54:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:54:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:54:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:54:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:54:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:54:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:54:14,425 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 11:54:14,561 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:54:14,563 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:54:14,778 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:54:14,927 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:54:14,928 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:54:14,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:54:14 BoogieIcfgContainer [2023-08-30 11:54:14,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:54:14,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:54:14,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:54:14,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:54:14,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:54:14" (1/3) ... [2023-08-30 11:54:14,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0015c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:54:14, skipping insertion in model container [2023-08-30 11:54:14,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:54:14" (2/3) ... [2023-08-30 11:54:14,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0015c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:54:14, skipping insertion in model container [2023-08-30 11:54:14,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:54:14" (3/3) ... [2023-08-30 11:54:14,938 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-30 11:54:14,944 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:54:14,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:54:14,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 11:54:14,951 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:54:15,042 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:54:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2023-08-30 11:54:15,148 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2023-08-30 11:54:15,149 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:54:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-30 11:54:15,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2023-08-30 11:54:15,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 118 transitions, 257 flow [2023-08-30 11:54:15,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:54:15,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 118 transitions, 257 flow [2023-08-30 11:54:15,189 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 118 transitions, 257 flow [2023-08-30 11:54:15,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 118 transitions, 257 flow [2023-08-30 11:54:15,235 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2023-08-30 11:54:15,235 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:54:15,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 118 events. 9/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-30 11:54:15,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-30 11:54:20,048 INFO L134 LiptonReduction]: Checked pairs total: 3120 [2023-08-30 11:54:20,049 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-30 11:54:20,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:54:20,078 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;@3b709f93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:54:20,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 11:54:20,082 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 11:54:20,082 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:54:20,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:20,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:54:20,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:20,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 628002, now seen corresponding path program 1 times [2023-08-30 11:54:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679165423] [2023-08-30 11:54:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:20,349 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 11:54:20,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:20,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679165423] [2023-08-30 11:54:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679165423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:54:20,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:54:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:54:20,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496149429] [2023-08-30 11:54:20,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:54:20,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:54:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:54:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:54:20,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:54:20,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:20,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:20,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:54:20,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:21,306 INFO L130 PetriNetUnfolder]: 8857/11548 cut-off events. [2023-08-30 11:54:21,306 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-08-30 11:54:21,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23763 conditions, 11548 events. 8857/11548 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 53280 event pairs, 2817 based on Foata normal form. 0/3638 useless extension candidates. Maximal degree in co-relation 21576. Up to 11343 conditions per place. [2023-08-30 11:54:21,408 INFO L137 encePairwiseOnDemand]: 225/246 looper letters, 51 selfloop transitions, 7 changer transitions 2/60 dead transitions. [2023-08-30 11:54:21,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 279 flow [2023-08-30 11:54:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:54:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:54:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-30 11:54:21,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338753387533876 [2023-08-30 11:54:21,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-30 11:54:21,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-30 11:54:21,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:54:21,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-30 11:54:21,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:21,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:21,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:21,431 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 99 flow. Second operand 3 states and 394 transitions. [2023-08-30 11:54:21,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 279 flow [2023-08-30 11:54:21,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:54:21,439 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 151 flow [2023-08-30 11:54:21,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-30 11:54:21,442 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-08-30 11:54:21,443 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 151 flow [2023-08-30 11:54:21,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:21,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:21,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:54:21,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:54:21,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:21,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:21,444 INFO L85 PathProgramCache]: Analyzing trace with hash 19468720, now seen corresponding path program 1 times [2023-08-30 11:54:21,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:21,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997203971] [2023-08-30 11:54:21,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:21,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:21,499 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 11:54:21,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997203971] [2023-08-30 11:54:21,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997203971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:54:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459396556] [2023-08-30 11:54:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:21,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:54:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:54:21,503 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 11:54:21,504 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 11:54:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:54:21,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:54:21,618 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 11:54:21,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:54:21,633 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 11:54:21,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459396556] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:54:21,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:54:21,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 11:54:21,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936965278] [2023-08-30 11:54:21,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:54:21,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:54:21,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:54:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:54:21,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:54:21,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:21,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:21,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:54:21,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:24,073 INFO L130 PetriNetUnfolder]: 34367/44442 cut-off events. [2023-08-30 11:54:24,073 INFO L131 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2023-08-30 11:54:24,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120980 conditions, 44442 events. 34367/44442 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 2138. Compared 238022 event pairs, 7837 based on Foata normal form. 0/21114 useless extension candidates. Maximal degree in co-relation 57652. Up to 30473 conditions per place. [2023-08-30 11:54:24,287 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 168 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2023-08-30 11:54:24,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 178 transitions, 938 flow [2023-08-30 11:54:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:54:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:54:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 813 transitions. [2023-08-30 11:54:24,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508130081300813 [2023-08-30 11:54:24,290 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 813 transitions. [2023-08-30 11:54:24,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 813 transitions. [2023-08-30 11:54:24,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:54:24,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 813 transitions. [2023-08-30 11:54:24,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:24,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:24,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:24,296 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 151 flow. Second operand 6 states and 813 transitions. [2023-08-30 11:54:24,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 178 transitions, 938 flow [2023-08-30 11:54:24,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 178 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:54:24,298 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 221 flow [2023-08-30 11:54:24,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-08-30 11:54:24,299 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-30 11:54:24,299 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 221 flow [2023-08-30 11:54:24,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:24,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:24,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:54:24,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:54:24,505 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 11:54:24,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:24,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash 19468719, now seen corresponding path program 1 times [2023-08-30 11:54:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:24,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094820630] [2023-08-30 11:54:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:54:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094820630] [2023-08-30 11:54:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094820630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:54:24,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:54:24,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:54:24,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933875851] [2023-08-30 11:54:24,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:54:24,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:54:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:24,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:54:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:54:24,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:54:24,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:24,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:24,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:54:24,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:27,338 INFO L130 PetriNetUnfolder]: 31609/41312 cut-off events. [2023-08-30 11:54:27,338 INFO L131 PetriNetUnfolder]: For 14262/14262 co-relation queries the response was YES. [2023-08-30 11:54:27,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116649 conditions, 41312 events. 31609/41312 cut-off events. For 14262/14262 co-relation queries the response was YES. Maximal size of possible extension queue 1954. Compared 220847 event pairs, 17393 based on Foata normal form. 1878/24602 useless extension candidates. Maximal degree in co-relation 64951. Up to 33598 conditions per place. [2023-08-30 11:54:27,618 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 73 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-30 11:54:27,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 433 flow [2023-08-30 11:54:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:54:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:54:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-30 11:54:27,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2023-08-30 11:54:27,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-30 11:54:27,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-30 11:54:27,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:54:27,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-30 11:54:27,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:27,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:27,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:27,626 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 221 flow. Second operand 4 states and 495 transitions. [2023-08-30 11:54:27,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 433 flow [2023-08-30 11:54:27,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 11:54:27,647 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 186 flow [2023-08-30 11:54:27,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-30 11:54:27,648 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-08-30 11:54:27,649 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 186 flow [2023-08-30 11:54:27,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:27,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:27,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:54:27,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:54:27,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:27,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash 19468718, now seen corresponding path program 1 times [2023-08-30 11:54:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:27,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613716108] [2023-08-30 11:54:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:27,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:27,727 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 11:54:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613716108] [2023-08-30 11:54:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613716108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:54:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557849173] [2023-08-30 11:54:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:27,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:54:27,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:54:27,735 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 11:54:27,738 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 11:54:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:27,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:54:27,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:54:27,820 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 11:54:27,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:54:27,832 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 11:54:27,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557849173] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:54:27,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:54:27,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:54:27,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762936359] [2023-08-30 11:54:27,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:54:27,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:54:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:54:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:54:27,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:54:27,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:27,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:27,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:54:27,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:35,005 INFO L130 PetriNetUnfolder]: 79173/108458 cut-off events. [2023-08-30 11:54:35,006 INFO L131 PetriNetUnfolder]: For 34471/34471 co-relation queries the response was YES. [2023-08-30 11:54:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303504 conditions, 108458 events. 79173/108458 cut-off events. For 34471/34471 co-relation queries the response was YES. Maximal size of possible extension queue 5083. Compared 747825 event pairs, 10227 based on Foata normal form. 4092/73486 useless extension candidates. Maximal degree in co-relation 159600. Up to 65395 conditions per place. [2023-08-30 11:54:35,703 INFO L137 encePairwiseOnDemand]: 228/246 looper letters, 128 selfloop transitions, 70 changer transitions 0/198 dead transitions. [2023-08-30 11:54:35,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 198 transitions, 1201 flow [2023-08-30 11:54:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:54:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:54:35,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2023-08-30 11:54:35,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493612078977933 [2023-08-30 11:54:35,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2023-08-30 11:54:35,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2023-08-30 11:54:35,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:54:35,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2023-08-30 11:54:35,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:35,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:35,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:35,717 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 186 flow. Second operand 7 states and 946 transitions. [2023-08-30 11:54:35,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 198 transitions, 1201 flow [2023-08-30 11:54:35,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 198 transitions, 1192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:54:35,833 INFO L231 Difference]: Finished difference. Result has 61 places, 109 transitions, 950 flow [2023-08-30 11:54:35,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=61, PETRI_TRANSITIONS=109} [2023-08-30 11:54:35,834 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-08-30 11:54:35,834 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 109 transitions, 950 flow [2023-08-30 11:54:35,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:35,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:35,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:54:35,841 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 11:54:36,040 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 11:54:36,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:36,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 19468717, now seen corresponding path program 1 times [2023-08-30 11:54:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:36,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087628126] [2023-08-30 11:54:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:54:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087628126] [2023-08-30 11:54:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087628126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:54:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:54:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:54:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151616402] [2023-08-30 11:54:36,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:54:36,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:54:36,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:36,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:54:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:54:36,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:54:36,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 109 transitions, 950 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:36,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:36,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:54:36,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:41,473 INFO L130 PetriNetUnfolder]: 51043/68174 cut-off events. [2023-08-30 11:54:41,474 INFO L131 PetriNetUnfolder]: For 147364/147364 co-relation queries the response was YES. [2023-08-30 11:54:41,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303284 conditions, 68174 events. 51043/68174 cut-off events. For 147364/147364 co-relation queries the response was YES. Maximal size of possible extension queue 3018. Compared 402118 event pairs, 32031 based on Foata normal form. 7166/55916 useless extension candidates. Maximal degree in co-relation 245592. Up to 68174 conditions per place. [2023-08-30 11:54:41,921 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-30 11:54:41,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 958 flow [2023-08-30 11:54:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:54:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:54:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-08-30 11:54:41,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 11:54:41,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-08-30 11:54:41,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-08-30 11:54:41,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:54:41,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-08-30 11:54:41,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:41,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:41,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:41,926 INFO L175 Difference]: Start difference. First operand has 61 places, 109 transitions, 950 flow. Second operand 3 states and 354 transitions. [2023-08-30 11:54:41,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 958 flow [2023-08-30 11:54:43,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 878 flow, removed 40 selfloop flow, removed 1 redundant places. [2023-08-30 11:54:43,496 INFO L231 Difference]: Finished difference. Result has 59 places, 90 transitions, 700 flow [2023-08-30 11:54:43,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=700, PETRI_PLACES=59, PETRI_TRANSITIONS=90} [2023-08-30 11:54:43,497 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-08-30 11:54:43,497 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 90 transitions, 700 flow [2023-08-30 11:54:43,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:43,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:43,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:54:43,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:54:43,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:43,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1529643427, now seen corresponding path program 1 times [2023-08-30 11:54:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:43,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311028515] [2023-08-30 11:54:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:43,525 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 11:54:43,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:43,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311028515] [2023-08-30 11:54:43,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311028515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:54:43,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:54:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:54:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499404059] [2023-08-30 11:54:43,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:54:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:54:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:54:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:54:43,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:54:43,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 90 transitions, 700 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:43,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:43,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:54:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:54:51,350 INFO L130 PetriNetUnfolder]: 78213/104434 cut-off events. [2023-08-30 11:54:51,351 INFO L131 PetriNetUnfolder]: For 130979/130979 co-relation queries the response was YES. [2023-08-30 11:54:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417681 conditions, 104434 events. 78213/104434 cut-off events. For 130979/130979 co-relation queries the response was YES. Maximal size of possible extension queue 4500. Compared 664361 event pairs, 20641 based on Foata normal form. 0/77738 useless extension candidates. Maximal degree in co-relation 417661. Up to 70613 conditions per place. [2023-08-30 11:54:52,320 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 162 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2023-08-30 11:54:52,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 1631 flow [2023-08-30 11:54:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:54:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:54:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-30 11:54:52,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-08-30 11:54:52,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-30 11:54:52,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-30 11:54:52,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:54:52,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-30 11:54:52,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:52,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:52,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:52,344 INFO L175 Difference]: Start difference. First operand has 59 places, 90 transitions, 700 flow. Second operand 3 states and 382 transitions. [2023-08-30 11:54:52,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 1631 flow [2023-08-30 11:54:53,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 166 transitions, 1630 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:54:53,755 INFO L231 Difference]: Finished difference. Result has 61 places, 93 transitions, 751 flow [2023-08-30 11:54:53,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=751, PETRI_PLACES=61, PETRI_TRANSITIONS=93} [2023-08-30 11:54:53,758 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-08-30 11:54:53,758 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 93 transitions, 751 flow [2023-08-30 11:54:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:53,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:54:53,758 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:54:53,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:54:53,759 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:54:53,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:54:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash 172613605, now seen corresponding path program 2 times [2023-08-30 11:54:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:54:53,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615098997] [2023-08-30 11:54:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:54:53,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:54:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:54:53,894 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 11:54:53,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:54:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615098997] [2023-08-30 11:54:53,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615098997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:54:53,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267763778] [2023-08-30 11:54:53,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:54:53,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:54:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:54:53,898 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 11:54:53,900 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 11:54:53,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:54:53,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:54:53,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 11:54:53,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:54:53,996 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 11:54:53,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:54:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267763778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:54:53,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:54:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:54:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172797283] [2023-08-30 11:54:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:54:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:54:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:54:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:54:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:54:54,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-08-30 11:54:54,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 93 transitions, 751 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:54:54,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:54:54,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-08-30 11:54:54,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:55:00,634 INFO L130 PetriNetUnfolder]: 73705/98500 cut-off events. [2023-08-30 11:55:00,634 INFO L131 PetriNetUnfolder]: For 175994/175994 co-relation queries the response was YES. [2023-08-30 11:55:00,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402498 conditions, 98500 events. 73705/98500 cut-off events. For 175994/175994 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 609105 event pairs, 47991 based on Foata normal form. 1426/74694 useless extension candidates. Maximal degree in co-relation 402476. Up to 98500 conditions per place. [2023-08-30 11:55:01,251 INFO L137 encePairwiseOnDemand]: 244/246 looper letters, 87 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-30 11:55:01,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 854 flow [2023-08-30 11:55:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:55:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:55:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-30 11:55:01,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47289972899729 [2023-08-30 11:55:01,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-30 11:55:01,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-30 11:55:01,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:55:01,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-30 11:55:01,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:01,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:01,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:01,255 INFO L175 Difference]: Start difference. First operand has 61 places, 93 transitions, 751 flow. Second operand 3 states and 349 transitions. [2023-08-30 11:55:01,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 854 flow [2023-08-30 11:55:01,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 812 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:55:01,906 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 638 flow [2023-08-30 11:55:01,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2023-08-30 11:55:01,907 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-30 11:55:01,907 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 638 flow [2023-08-30 11:55:01,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:01,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:55:01,908 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:55:01,914 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 11:55:02,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:55:02,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:55:02,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:55:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash 172613603, now seen corresponding path program 2 times [2023-08-30 11:55:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:55:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703469536] [2023-08-30 11:55:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:55:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:55:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:55:02,159 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 11:55:02,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:55:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703469536] [2023-08-30 11:55:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703469536] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:55:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329153605] [2023-08-30 11:55:02,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:55:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:55:02,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:55:02,161 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 11:55:02,163 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 11:55:02,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 11:55:02,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:55:02,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:55:02,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:55:02,230 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 11:55:02,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:55:02,265 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 11:55:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329153605] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:55:02,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:55:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 11:55:02,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142410235] [2023-08-30 11:55:02,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:55:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:55:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:55:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:55:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:55:02,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:55:02,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 638 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:02,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:55:02,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:55:02,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:55:20,962 INFO L130 PetriNetUnfolder]: 225857/302332 cut-off events. [2023-08-30 11:55:20,963 INFO L131 PetriNetUnfolder]: For 761151/761151 co-relation queries the response was YES. [2023-08-30 11:55:21,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174847 conditions, 302332 events. 225857/302332 cut-off events. For 761151/761151 co-relation queries the response was YES. Maximal size of possible extension queue 9488. Compared 2104718 event pairs, 21345 based on Foata normal form. 43700/262448 useless extension candidates. Maximal degree in co-relation 1174828. Up to 132229 conditions per place. [2023-08-30 11:55:23,381 INFO L137 encePairwiseOnDemand]: 231/246 looper letters, 214 selfloop transitions, 233 changer transitions 0/447 dead transitions. [2023-08-30 11:55:23,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 447 transitions, 3586 flow [2023-08-30 11:55:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:55:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:55:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1615 transitions. [2023-08-30 11:55:23,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470867208672087 [2023-08-30 11:55:23,395 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1615 transitions. [2023-08-30 11:55:23,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1615 transitions. [2023-08-30 11:55:23,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:55:23,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1615 transitions. [2023-08-30 11:55:23,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.58333333333334) internal successors, (1615), 12 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:23,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:23,407 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:23,407 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 638 flow. Second operand 12 states and 1615 transitions. [2023-08-30 11:55:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 447 transitions, 3586 flow [2023-08-30 11:55:25,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 447 transitions, 3585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:55:25,046 INFO L231 Difference]: Finished difference. Result has 77 places, 277 transitions, 3328 flow [2023-08-30 11:55:25,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3328, PETRI_PLACES=77, PETRI_TRANSITIONS=277} [2023-08-30 11:55:25,046 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 29 predicate places. [2023-08-30 11:55:25,047 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 277 transitions, 3328 flow [2023-08-30 11:55:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:25,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:55:25,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:55:25,052 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 11:55:25,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:55:25,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:55:25,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:55:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash 225126105, now seen corresponding path program 1 times [2023-08-30 11:55:25,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:55:25,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227327300] [2023-08-30 11:55:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:55:25,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:55:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:55:25,280 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 11:55:25,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:55:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227327300] [2023-08-30 11:55:25,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227327300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:55:25,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:55:25,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:55:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487236352] [2023-08-30 11:55:25,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:55:25,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:55:25,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:55:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:55:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:55:25,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:55:25,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 277 transitions, 3328 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:25,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:55:25,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:55:25,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:55:47,916 INFO L130 PetriNetUnfolder]: 171649/230064 cut-off events. [2023-08-30 11:55:47,917 INFO L131 PetriNetUnfolder]: For 795545/795545 co-relation queries the response was YES. [2023-08-30 11:55:48,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169764 conditions, 230064 events. 171649/230064 cut-off events. For 795545/795545 co-relation queries the response was YES. Maximal size of possible extension queue 7310. Compared 1550576 event pairs, 94207 based on Foata normal form. 0/175948 useless extension candidates. Maximal degree in co-relation 1169734. Up to 230064 conditions per place. [2023-08-30 11:55:50,169 INFO L137 encePairwiseOnDemand]: 244/246 looper letters, 256 selfloop transitions, 1 changer transitions 0/257 dead transitions. [2023-08-30 11:55:50,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 257 transitions, 3638 flow [2023-08-30 11:55:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:55:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:55:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-30 11:55:50,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2023-08-30 11:55:50,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-30 11:55:50,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-30 11:55:50,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:55:50,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-30 11:55:50,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:50,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:50,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:50,188 INFO L175 Difference]: Start difference. First operand has 77 places, 277 transitions, 3328 flow. Second operand 3 states and 351 transitions. [2023-08-30 11:55:50,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 257 transitions, 3638 flow [2023-08-30 11:56:10,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 257 transitions, 2938 flow, removed 350 selfloop flow, removed 0 redundant places. [2023-08-30 11:56:10,112 INFO L231 Difference]: Finished difference. Result has 78 places, 257 transitions, 2426 flow [2023-08-30 11:56:10,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2426, PETRI_PLACES=78, PETRI_TRANSITIONS=257} [2023-08-30 11:56:10,114 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2023-08-30 11:56:10,114 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 257 transitions, 2426 flow [2023-08-30 11:56:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:56:10,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:56:10,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:56:10,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:56:10,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:56:10,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:56:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 225126106, now seen corresponding path program 1 times [2023-08-30 11:56:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:56:10,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765839696] [2023-08-30 11:56:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:56:10,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:56:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:56:10,178 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 11:56:10,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:56:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765839696] [2023-08-30 11:56:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765839696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:56:10,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:56:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:56:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161879154] [2023-08-30 11:56:10,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:56:10,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:56:10,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:56:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:56:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:56:10,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:56:10,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 257 transitions, 2426 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:56:10,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:56:10,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:56:10,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:56:34,117 INFO L130 PetriNetUnfolder]: 204313/274072 cut-off events. [2023-08-30 11:56:34,118 INFO L131 PetriNetUnfolder]: For 691172/691172 co-relation queries the response was YES. [2023-08-30 11:56:35,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170128 conditions, 274072 events. 204313/274072 cut-off events. For 691172/691172 co-relation queries the response was YES. Maximal size of possible extension queue 8639. Compared 1899738 event pairs, 36633 based on Foata normal form. 0/213376 useless extension candidates. Maximal degree in co-relation 1170096. Up to 232961 conditions per place. [2023-08-30 11:56:36,631 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 403 selfloop transitions, 21 changer transitions 0/424 dead transitions. [2023-08-30 11:56:36,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 424 transitions, 4854 flow [2023-08-30 11:56:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:56:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:56:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-08-30 11:56:36,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094850948509485 [2023-08-30 11:56:36,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-08-30 11:56:36,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-08-30 11:56:36,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:56:36,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-08-30 11:56:36,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:56:36,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:56:36,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:56:36,659 INFO L175 Difference]: Start difference. First operand has 78 places, 257 transitions, 2426 flow. Second operand 3 states and 376 transitions. [2023-08-30 11:56:36,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 424 transitions, 4854 flow [2023-08-30 11:57:03,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 424 transitions, 4831 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-30 11:57:03,132 INFO L231 Difference]: Finished difference. Result has 80 places, 275 transitions, 2692 flow [2023-08-30 11:57:03,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2692, PETRI_PLACES=80, PETRI_TRANSITIONS=275} [2023-08-30 11:57:03,133 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2023-08-30 11:57:03,133 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 275 transitions, 2692 flow [2023-08-30 11:57:03,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:57:03,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:57:03,134 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 11:57:03,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:57:03,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:57:03,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:57:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash 37376634, now seen corresponding path program 1 times [2023-08-30 11:57:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:57:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548081227] [2023-08-30 11:57:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:57:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:57:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:57:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:57:03,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:57:03,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548081227] [2023-08-30 11:57:03,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548081227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:57:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964187511] [2023-08-30 11:57:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:57:03,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:57:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:57:03,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:57:03,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:57:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:57:03,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:57:03,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:57:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:57:03,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:57:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:57:03,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964187511] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:57:03,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:57:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:57:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123426944] [2023-08-30 11:57:03,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:57:03,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:57:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:57:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:57:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:57:03,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:57:03,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 275 transitions, 2692 flow. Second operand has 7 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:57:03,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:57:03,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:57:03,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:57:50,840 INFO L130 PetriNetUnfolder]: 431602/571351 cut-off events. [2023-08-30 11:57:50,840 INFO L131 PetriNetUnfolder]: For 1593344/1593344 co-relation queries the response was YES. [2023-08-30 11:57:53,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2550805 conditions, 571351 events. 431602/571351 cut-off events. For 1593344/1593344 co-relation queries the response was YES. Maximal size of possible extension queue 14659. Compared 4037371 event pairs, 77992 based on Foata normal form. 0/441739 useless extension candidates. Maximal degree in co-relation 2550771. Up to 141211 conditions per place. [2023-08-30 11:57:56,261 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 1305 selfloop transitions, 113 changer transitions 0/1418 dead transitions. [2023-08-30 11:57:56,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1418 transitions, 16694 flow [2023-08-30 11:57:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:57:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:57:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 903 transitions. [2023-08-30 11:57:56,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524390243902439 [2023-08-30 11:57:56,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 903 transitions. [2023-08-30 11:57:56,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 903 transitions. [2023-08-30 11:57:56,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:57:56,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 903 transitions. [2023-08-30 11:57:56,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:57:56,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:57:56,267 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:57:56,267 INFO L175 Difference]: Start difference. First operand has 80 places, 275 transitions, 2692 flow. Second operand 7 states and 903 transitions. [2023-08-30 11:57:56,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 1418 transitions, 16694 flow [2023-08-30 11:59:27,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 1418 transitions, 16578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:59:27,046 INFO L231 Difference]: Finished difference. Result has 88 places, 359 transitions, 3975 flow [2023-08-30 11:59:27,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3975, PETRI_PLACES=88, PETRI_TRANSITIONS=359} [2023-08-30 11:59:27,047 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2023-08-30 11:59:27,047 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 359 transitions, 3975 flow [2023-08-30 11:59:27,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.14285714285714) internal successors, (764), 7 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:27,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:59:27,047 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 11:59:27,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:59:27,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 11:59:27,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 11:59:27,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:59:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 37376633, now seen corresponding path program 1 times [2023-08-30 11:59:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:59:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155617993] [2023-08-30 11:59:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:27,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:59:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:27,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:59:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:59:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155617993] [2023-08-30 11:59:27,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155617993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:59:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741589355] [2023-08-30 11:59:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:59:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:59:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:59:27,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:59:27,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:59:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:59:27,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:59:27,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:59:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:59:27,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:59:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741589355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:59:27,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:59:27,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:59:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370396106] [2023-08-30 11:59:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:59:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:59:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:59:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:59:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:59:27,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 11:59:27,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 359 transitions, 3975 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:59:27,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:59:27,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 11:59:27,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:00:16,024 INFO L130 PetriNetUnfolder]: 377085/506830 cut-off events. [2023-08-30 12:00:16,024 INFO L131 PetriNetUnfolder]: For 1954827/1954827 co-relation queries the response was YES. [2023-08-30 12:00:19,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295460 conditions, 506830 events. 377085/506830 cut-off events. For 1954827/1954827 co-relation queries the response was YES. Maximal size of possible extension queue 13651. Compared 3726523 event pairs, 88567 based on Foata normal form. 16240/440664 useless extension candidates. Maximal degree in co-relation 2295422. Up to 420731 conditions per place. [2023-08-30 12:00:21,990 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 501 selfloop transitions, 15 changer transitions 0/516 dead transitions. [2023-08-30 12:00:21,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 516 transitions, 6348 flow [2023-08-30 12:00:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:00:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:00:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2023-08-30 12:00:21,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898373983739837 [2023-08-30 12:00:21,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2023-08-30 12:00:21,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2023-08-30 12:00:21,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:00:21,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2023-08-30 12:00:21,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:21,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:21,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:00:21,995 INFO L175 Difference]: Start difference. First operand has 88 places, 359 transitions, 3975 flow. Second operand 4 states and 482 transitions. [2023-08-30 12:00:21,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 516 transitions, 6348 flow [2023-08-30 12:01:53,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 516 transitions, 6249 flow, removed 42 selfloop flow, removed 1 redundant places. [2023-08-30 12:01:53,700 INFO L231 Difference]: Finished difference. Result has 88 places, 303 transitions, 3192 flow [2023-08-30 12:01:53,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=3162, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3192, PETRI_PLACES=88, PETRI_TRANSITIONS=303} [2023-08-30 12:01:53,701 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2023-08-30 12:01:53,701 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 303 transitions, 3192 flow [2023-08-30 12:01:53,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:53,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:01:53,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:01:53,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 12:01:53,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:01:53,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 12:01:53,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:01:53,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1611024752, now seen corresponding path program 1 times [2023-08-30 12:01:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:01:53,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312952174] [2023-08-30 12:01:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:53,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:01:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:53,947 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 12:01:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:01:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312952174] [2023-08-30 12:01:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312952174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:01:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099545690] [2023-08-30 12:01:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:01:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:01:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:01:53,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:01:53,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 12:01:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:01:54,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:01:54,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:01:54,027 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 12:01:54,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:01:54,042 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 12:01:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099545690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:01:54,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:01:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 12:01:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937566870] [2023-08-30 12:01:54,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:01:54,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:01:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:01:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:01:54,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:01:54,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 12:01:54,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 303 transitions, 3192 flow. Second operand has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:01:54,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:01:54,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 12:01:54,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand