./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.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-more-buffer-series2.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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --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 11:45:46,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:45:46,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:45:46,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:45:46,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:45:46,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:45:46,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:45:46,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:45:46,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:45:46,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:45:46,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:45:46,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:45:46,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:45:46,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:45:46,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:45:46,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:45:46,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:45:46,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:45:46,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:45:46,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:45:46,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:45:46,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:45:46,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:45:46,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:45:46,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:45:46,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:45:46,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:45:46,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:45:46,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:45:46,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:45:46,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:45:46,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:45:46,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:45:46,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:45:46,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:45:46,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:45:46,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:45:46,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:45:46,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:45:46,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:45:46,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:45:46,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:45:46,509 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:45:46,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:45:46,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:45:46,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:45:46,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:45:46,511 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:45:46,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:45:46,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:45:46,512 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:45:46,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:45:46,513 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:45:46,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:45:46,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:45:46,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:45:46,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:45:46,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:45:46,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:45:46,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:45:46,515 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:45:46,515 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:45:46,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:45:46,516 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:45:46,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:45:46,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:45:46,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:45:46,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:45:46,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:45:46,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:45:46,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:45:46,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:45:46,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:45:46,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:45:46,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:45:46,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:45:46,519 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:45:46,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:45:46,519 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:45:46,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:45:46,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:45:46,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:45:46,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:45:46,845 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:45:46,845 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:45:46,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-30 11:45:47,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:45:48,225 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:45:48,225 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-08-30 11:45:48,233 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314a128a1/0c1b604b2e5c4ea198e0eaf9fafe049a/FLAGaf2d2e55a [2023-08-30 11:45:48,251 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314a128a1/0c1b604b2e5c4ea198e0eaf9fafe049a [2023-08-30 11:45:48,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:45:48,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:45:48,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:45:48,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:45:48,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:45:48,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce26182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48, skipping insertion in model container [2023-08-30 11:45:48,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:45:48,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:45:48,420 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-more-buffer-series2.wvr.c[4232,4245] [2023-08-30 11:45:48,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:45:48,433 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:45:48,458 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-more-buffer-series2.wvr.c[4232,4245] [2023-08-30 11:45:48,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:45:48,474 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:45:48,474 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:45:48,479 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:45:48,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48 WrapperNode [2023-08-30 11:45:48,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:45:48,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:45:48,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:45:48,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:45:48,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,529 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 402 [2023-08-30 11:45:48,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:45:48,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:45:48,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:45:48,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:45:48,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:45:48,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:45:48,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:45:48,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:45:48,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (1/1) ... [2023-08-30 11:45:48,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:45:48,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:45:48,600 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 11:45:48,606 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 11:45:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:45:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:45:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:45:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:45:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:45:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:45:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:45:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:45:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:45:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:45:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:45:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:45:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:45:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:45:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:45:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:45:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:45:48,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:45:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:45:48,640 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 11:45:48,766 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:45:48,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:45:49,343 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:45:49,804 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:45:49,804 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 11:45:49,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:45:49 BoogieIcfgContainer [2023-08-30 11:45:49,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:45:49,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:45:49,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:45:49,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:45:49,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:45:48" (1/3) ... [2023-08-30 11:45:49,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76af6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:45:49, skipping insertion in model container [2023-08-30 11:45:49,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:45:48" (2/3) ... [2023-08-30 11:45:49,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76af6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:45:49, skipping insertion in model container [2023-08-30 11:45:49,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:45:49" (3/3) ... [2023-08-30 11:45:49,815 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-08-30 11:45:49,822 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:45:49,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:45:49,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 11:45:49,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:45:49,987 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 11:45:50,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 287 transitions, 606 flow [2023-08-30 11:45:50,188 INFO L130 PetriNetUnfolder]: 22/283 cut-off events. [2023-08-30 11:45:50,188 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:45:50,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 283 events. 22/283 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2023-08-30 11:45:50,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 287 transitions, 606 flow [2023-08-30 11:45:50,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 263 transitions, 547 flow [2023-08-30 11:45:50,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:45:50,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 263 transitions, 547 flow [2023-08-30 11:45:50,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 263 transitions, 547 flow [2023-08-30 11:45:50,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 263 transitions, 547 flow [2023-08-30 11:45:50,289 INFO L130 PetriNetUnfolder]: 21/263 cut-off events. [2023-08-30 11:45:50,290 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:45:50,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 263 events. 21/263 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2023-08-30 11:45:50,295 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2023-08-30 11:46:04,867 INFO L134 LiptonReduction]: Checked pairs total: 7078 [2023-08-30 11:46:04,869 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-30 11:46:04,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:46:04,884 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;@3af422cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:46:04,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-08-30 11:46:04,887 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:46:04,887 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:46:04,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:04,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:46:04,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:46:04,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 49635, now seen corresponding path program 1 times [2023-08-30 11:46:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:04,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390306927] [2023-08-30 11:46:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:04,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:05,162 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 11:46:05,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:05,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390306927] [2023-08-30 11:46:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390306927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:05,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:46:05,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:46:05,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676544000] [2023-08-30 11:46:05,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:05,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:46:05,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 11:46:05,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:05,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:05,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 11:46:05,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:12,173 INFO L130 PetriNetUnfolder]: 45294/56452 cut-off events. [2023-08-30 11:46:12,174 INFO L131 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2023-08-30 11:46:12,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113835 conditions, 56452 events. 45294/56452 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 312612 event pairs, 29191 based on Foata normal form. 0/17034 useless extension candidates. Maximal degree in co-relation 48897. Up to 27682 conditions per place. [2023-08-30 11:46:12,552 INFO L137 encePairwiseOnDemand]: 541/564 looper letters, 87 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-08-30 11:46:12,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2023-08-30 11:46:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2023-08-30 11:46:12,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867612293144206 [2023-08-30 11:46:12,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2023-08-30 11:46:12,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2023-08-30 11:46:12,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:12,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2023-08-30 11:46:12,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,592 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 3 states and 793 transitions. [2023-08-30 11:46:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2023-08-30 11:46:12,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 11:46:12,834 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 176 flow [2023-08-30 11:46:12,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 11:46:12,841 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2023-08-30 11:46:12,841 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 176 flow [2023-08-30 11:46:12,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:12,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:46:12,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:46:12,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:46:12,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:12,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1540239, now seen corresponding path program 1 times [2023-08-30 11:46:12,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:12,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607972727] [2023-08-30 11:46:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:12,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:12,922 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 11:46:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607972727] [2023-08-30 11:46:12,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607972727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:12,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:46:12,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:46:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409800281] [2023-08-30 11:46:12,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:12,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:12,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:12,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:46:12,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 11:46:12,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:12,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 11:46:12,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:18,433 INFO L130 PetriNetUnfolder]: 45303/56458 cut-off events. [2023-08-30 11:46:18,434 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:46:18,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112882 conditions, 56458 events. 45303/56458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 313064 event pairs, 29192 based on Foata normal form. 0/16801 useless extension candidates. Maximal degree in co-relation 56421. Up to 55368 conditions per place. [2023-08-30 11:46:18,925 INFO L137 encePairwiseOnDemand]: 560/564 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 11:46:18,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 268 flow [2023-08-30 11:46:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 722 transitions. [2023-08-30 11:46:18,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42671394799054374 [2023-08-30 11:46:18,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 722 transitions. [2023-08-30 11:46:18,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 722 transitions. [2023-08-30 11:46:18,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:18,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 722 transitions. [2023-08-30 11:46:18,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:18,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:18,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:18,936 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 176 flow. Second operand 3 states and 722 transitions. [2023-08-30 11:46:18,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 268 flow [2023-08-30 11:46:18,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:46:18,938 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 154 flow [2023-08-30 11:46:18,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-08-30 11:46:18,939 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2023-08-30 11:46:18,940 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 154 flow [2023-08-30 11:46:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:18,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:18,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:46:18,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:46:18,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:46:18,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1540240, now seen corresponding path program 1 times [2023-08-30 11:46:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:18,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246174758] [2023-08-30 11:46:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:18,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:19,010 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 11:46:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246174758] [2023-08-30 11:46:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246174758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:46:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351299129] [2023-08-30 11:46:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:19,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:19,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:19,014 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 11:46:19,048 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 11:46:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:19,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:46:19,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:46:19,230 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 11:46:19,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:46:19,244 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 11:46:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351299129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:46:19,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:46:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:46:19,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216430590] [2023-08-30 11:46:19,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:46:19,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:46:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:46:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:46:19,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 11:46:19,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:19,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:19,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 11:46:19,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:32,460 INFO L130 PetriNetUnfolder]: 113220/141103 cut-off events. [2023-08-30 11:46:32,461 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:46:32,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282091 conditions, 141103 events. 113220/141103 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9657. Compared 845128 event pairs, 72976 based on Foata normal form. 0/42947 useless extension candidates. Maximal degree in co-relation 282083. Up to 27688 conditions per place. [2023-08-30 11:46:33,140 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 198 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2023-08-30 11:46:33,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 988 flow [2023-08-30 11:46:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:46:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:46:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-08-30 11:46:33,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2023-08-30 11:46:33,145 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-08-30 11:46:33,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-08-30 11:46:33,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:33,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-08-30 11:46:33,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:33,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:33,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:33,157 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 154 flow. Second operand 6 states and 1572 transitions. [2023-08-30 11:46:33,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 988 flow [2023-08-30 11:46:33,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:46:33,161 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 303 flow [2023-08-30 11:46:33,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2023-08-30 11:46:33,162 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 11:46:33,163 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 303 flow [2023-08-30 11:46:33,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:33,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:33,164 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:46:33,172 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 11:46:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:33,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:46:33,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1357837084, now seen corresponding path program 2 times [2023-08-30 11:46:33,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:33,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852297795] [2023-08-30 11:46:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:33,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:33,522 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 11:46:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:33,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852297795] [2023-08-30 11:46:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852297795] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:46:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734622890] [2023-08-30 11:46:33,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:46:33,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:33,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:33,529 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 11:46:33,559 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 11:46:33,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:46:33,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:46:33,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:46:33,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:46:33,684 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 11:46:33,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:46:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734622890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:33,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:46:33,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:46:33,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967169954] [2023-08-30 11:46:33,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:33,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:46:33,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 564 [2023-08-30 11:46:33,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:33,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:33,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 564 [2023-08-30 11:46:33,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:46,762 INFO L130 PetriNetUnfolder]: 113256/141138 cut-off events. [2023-08-30 11:46:46,762 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:46:47,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282212 conditions, 141138 events. 113256/141138 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9517. Compared 846324 event pairs, 72980 based on Foata normal form. 1/42000 useless extension candidates. Maximal degree in co-relation 282200. Up to 138408 conditions per place. [2023-08-30 11:46:47,440 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-30 11:46:47,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 425 flow [2023-08-30 11:46:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-30 11:46:47,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302600472813239 [2023-08-30 11:46:47,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-30 11:46:47,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-30 11:46:47,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:47,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-30 11:46:47,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:47,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:47,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:47,449 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 303 flow. Second operand 3 states and 728 transitions. [2023-08-30 11:46:47,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 425 flow [2023-08-30 11:46:47,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 395 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:46:47,452 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 275 flow [2023-08-30 11:46:47,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2023-08-30 11:46:47,452 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-08-30 11:46:47,453 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 275 flow [2023-08-30 11:46:47,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:47,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:47,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:46:47,461 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 11:46:47,658 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 11:46:47,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:46:47,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1510203433, now seen corresponding path program 1 times [2023-08-30 11:46:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760348615] [2023-08-30 11:46:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:47,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:47,719 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 11:46:47,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:47,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760348615] [2023-08-30 11:46:47,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760348615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:47,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:46:47,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:46:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089001718] [2023-08-30 11:46:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:47,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:46:47,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 564 [2023-08-30 11:46:47,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:47,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:47,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 564 [2023-08-30 11:46:47,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:03,161 INFO L130 PetriNetUnfolder]: 130576/166603 cut-off events. [2023-08-30 11:47:03,161 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 11:47:03,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335276 conditions, 166603 events. 130576/166603 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 11664. Compared 1110438 event pairs, 33245 based on Foata normal form. 0/53042 useless extension candidates. Maximal degree in co-relation 335263. Up to 108456 conditions per place. [2023-08-30 11:47:03,944 INFO L137 encePairwiseOnDemand]: 560/564 looper letters, 98 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 11:47:03,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 106 transitions, 550 flow [2023-08-30 11:47:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2023-08-30 11:47:03,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598108747044917 [2023-08-30 11:47:03,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 778 transitions. [2023-08-30 11:47:03,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 778 transitions. [2023-08-30 11:47:03,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:03,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 778 transitions. [2023-08-30 11:47:03,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:03,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:03,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:03,953 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 275 flow. Second operand 3 states and 778 transitions. [2023-08-30 11:47:03,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 106 transitions, 550 flow [2023-08-30 11:47:03,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 106 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:03,964 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 277 flow [2023-08-30 11:47:03,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2023-08-30 11:47:03,965 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-08-30 11:47:03,965 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 277 flow [2023-08-30 11:47:03,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:03,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:03,966 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:47:03,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:47:03,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:47:03,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1476068836, now seen corresponding path program 1 times [2023-08-30 11:47:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:03,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246839301] [2023-08-30 11:47:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:03,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:04,072 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 11:47:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:04,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246839301] [2023-08-30 11:47:04,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246839301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127698928] [2023-08-30 11:47:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:04,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:04,075 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 11:47:04,081 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 11:47:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:04,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:47:04,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:04,218 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 11:47:04,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:04,265 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 11:47:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127698928] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:04,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:04,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:47:04,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194137626] [2023-08-30 11:47:04,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:04,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:47:04,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:47:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:47:04,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 11:47:04,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 277 flow. Second operand has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:04,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:04,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 11:47:04,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:40,988 INFO L130 PetriNetUnfolder]: 289493/371126 cut-off events. [2023-08-30 11:47:40,988 INFO L131 PetriNetUnfolder]: For 19325/19325 co-relation queries the response was YES. [2023-08-30 11:47:41,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790228 conditions, 371126 events. 289493/371126 cut-off events. For 19325/19325 co-relation queries the response was YES. Maximal size of possible extension queue 15065. Compared 2582579 event pairs, 214171 based on Foata normal form. 12/141479 useless extension candidates. Maximal degree in co-relation 790214. Up to 38589 conditions per place. [2023-08-30 11:47:42,940 INFO L137 encePairwiseOnDemand]: 556/564 looper letters, 436 selfloop transitions, 51 changer transitions 0/493 dead transitions. [2023-08-30 11:47:42,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 493 transitions, 2369 flow [2023-08-30 11:47:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:47:42,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:47:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3176 transitions. [2023-08-30 11:47:42,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46926713947990545 [2023-08-30 11:47:42,947 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3176 transitions. [2023-08-30 11:47:42,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3176 transitions. [2023-08-30 11:47:42,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:42,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3176 transitions. [2023-08-30 11:47:42,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 264.6666666666667) internal successors, (3176), 12 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:42,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:42,964 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:42,964 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 277 flow. Second operand 12 states and 3176 transitions. [2023-08-30 11:47:42,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 493 transitions, 2369 flow [2023-08-30 11:47:42,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 493 transitions, 2357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:42,994 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 623 flow [2023-08-30 11:47:42,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=623, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2023-08-30 11:47:42,995 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-30 11:47:42,995 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 623 flow [2023-08-30 11:47:42,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:42,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:42,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:43,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:43,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:43,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:47:43,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash -428327773, now seen corresponding path program 1 times [2023-08-30 11:47:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:43,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994222663] [2023-08-30 11:47:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:43,278 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 11:47:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:43,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994222663] [2023-08-30 11:47:43,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994222663] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:43,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804800607] [2023-08-30 11:47:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:43,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:43,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:43,280 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 11:47:43,283 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 11:47:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:43,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:47:43,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:43,457 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 11:47:43,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:43,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804800607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:43,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:43,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-30 11:47:43,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677769574] [2023-08-30 11:47:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:47:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:47:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:47:43,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 564 [2023-08-30 11:47:43,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 623 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:43,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:43,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 564 [2023-08-30 11:47:43,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:25,026 INFO L130 PetriNetUnfolder]: 311565/401340 cut-off events. [2023-08-30 11:48:25,026 INFO L131 PetriNetUnfolder]: For 21922/21922 co-relation queries the response was YES. [2023-08-30 11:48:26,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841238 conditions, 401340 events. 311565/401340 cut-off events. For 21922/21922 co-relation queries the response was YES. Maximal size of possible extension queue 17742. Compared 2859850 event pairs, 230120 based on Foata normal form. 2518/159913 useless extension candidates. Maximal degree in co-relation 841217. Up to 363937 conditions per place. [2023-08-30 11:48:27,672 INFO L137 encePairwiseOnDemand]: 551/564 looper letters, 175 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2023-08-30 11:48:27,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 196 transitions, 1460 flow [2023-08-30 11:48:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:48:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:48:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1223 transitions. [2023-08-30 11:48:27,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43368794326241134 [2023-08-30 11:48:27,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1223 transitions. [2023-08-30 11:48:27,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1223 transitions. [2023-08-30 11:48:27,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:27,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1223 transitions. [2023-08-30 11:48:27,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.6) internal successors, (1223), 5 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 564.0) internal successors, (3384), 6 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 564.0) internal successors, (3384), 6 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,683 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 623 flow. Second operand 5 states and 1223 transitions. [2023-08-30 11:48:27,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 196 transitions, 1460 flow [2023-08-30 11:48:27,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 196 transitions, 1228 flow, removed 65 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:27,701 INFO L231 Difference]: Finished difference. Result has 81 places, 115 transitions, 657 flow [2023-08-30 11:48:27,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=657, PETRI_PLACES=81, PETRI_TRANSITIONS=115} [2023-08-30 11:48:27,702 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2023-08-30 11:48:27,702 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 115 transitions, 657 flow [2023-08-30 11:48:27,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:27,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:27,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 11:48:27,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:27,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 11:48:27,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:27,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1756908111, now seen corresponding path program 1 times [2023-08-30 11:48:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:27,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168703375] [2023-08-30 11:48:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:27,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:28,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168703375] [2023-08-30 11:48:28,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168703375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854196048] [2023-08-30 11:48:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:28,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:28,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:28,005 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 11:48:28,005 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 11:48:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:28,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:48:28,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854196048] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:28,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:28,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 9 [2023-08-30 11:48:28,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601321334] [2023-08-30 11:48:28,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:28,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 11:48:28,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 11:48:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-30 11:48:28,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 564 [2023-08-30 11:48:28,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 115 transitions, 657 flow. Second operand has 11 states, 11 states have (on average 211.9090909090909) internal successors, (2331), 11 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:28,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 564 [2023-08-30 11:48:28,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand