./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.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-dec-subseq.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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --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 11:46:56,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:46:56,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:46:56,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:46:56,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:46:56,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:46:56,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:46:56,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:46:56,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:46:56,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:46:56,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:46:56,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:46:56,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:46:56,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:46:56,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:46:56,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:46:56,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:46:56,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:46:56,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:46:56,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:46:56,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:46:56,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:46:56,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:46:56,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:46:56,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:46:56,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:46:56,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:46:56,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:46:56,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:46:56,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:46:56,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:46:56,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:46:56,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:46:56,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:46:56,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:46:56,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:46:56,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:46:56,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:46:56,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:46:56,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:46:56,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:46:56,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:46:56,431 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:46:56,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:46:56,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:46:56,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:46:56,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:46:56,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:46:56,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:46:56,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:46:56,435 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:46:56,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:46:56,436 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:46:56,436 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:46:56,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:46:56,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:46:56,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:46:56,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:46:56,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:46:56,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:46:56,437 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:46:56,438 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:46:56,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:46:56,438 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:46:56,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:46:56,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:46:56,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:46:56,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:46:56,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:46:56,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:46:56,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:46:56,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:46:56,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:46:56,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:46:56,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:46:56,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:46:56,441 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:46:56,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:46:56,441 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:46:56,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:46:56,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:46:56,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:46:56,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:46:56,798 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:46:56,798 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:46:56,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-08-30 11:46:57,945 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:46:58,157 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:46:58,158 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-dec-subseq.wvr.c [2023-08-30 11:46:58,164 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d93c982fe/70c7a72549e24aa2a16be70f6bb8a4cd/FLAG88c07458a [2023-08-30 11:46:58,175 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d93c982fe/70c7a72549e24aa2a16be70f6bb8a4cd [2023-08-30 11:46:58,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:46:58,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:46:58,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:46:58,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:46:58,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:46:58,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a301699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58, skipping insertion in model container [2023-08-30 11:46:58,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:46:58,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:46:58,381 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-dec-subseq.wvr.c[2924,2937] [2023-08-30 11:46:58,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:46:58,403 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:46:58,436 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-dec-subseq.wvr.c[2924,2937] [2023-08-30 11:46:58,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:46:58,453 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:46:58,454 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:46:58,460 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:46:58,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58 WrapperNode [2023-08-30 11:46:58,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:46:58,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:46:58,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:46:58,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:46:58,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,522 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 206 [2023-08-30 11:46:58,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:46:58,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:46:58,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:46:58,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:46:58,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:46:58,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:46:58,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:46:58,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:46:58,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (1/1) ... [2023-08-30 11:46:58,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:46:58,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:58,609 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 11:46:58,637 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 11:46:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:46:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:46:58,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:46:58,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:46:58,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:46:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:46:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:46:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:46:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:46:58,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:46:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:46:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:46:58,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:46:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:46:58,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:46:58,662 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 11:46:58,780 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:46:58,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:46:59,080 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:46:59,262 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:46:59,265 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:46:59,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:46:59 BoogieIcfgContainer [2023-08-30 11:46:59,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:46:59,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:46:59,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:46:59,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:46:59,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:46:58" (1/3) ... [2023-08-30 11:46:59,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a61a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:46:59, skipping insertion in model container [2023-08-30 11:46:59,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:46:58" (2/3) ... [2023-08-30 11:46:59,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a61a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:46:59, skipping insertion in model container [2023-08-30 11:46:59,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:46:59" (3/3) ... [2023-08-30 11:46:59,276 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2023-08-30 11:46:59,283 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:46:59,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:46:59,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 11:46:59,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:46:59,393 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:46:59,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 11:46:59,538 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2023-08-30 11:46:59,538 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:46:59,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-08-30 11:46:59,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 11:46:59,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 172 transitions, 353 flow [2023-08-30 11:46:59,555 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:46:59,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 172 transitions, 353 flow [2023-08-30 11:46:59,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 172 transitions, 353 flow [2023-08-30 11:46:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 353 flow [2023-08-30 11:46:59,619 INFO L130 PetriNetUnfolder]: 14/172 cut-off events. [2023-08-30 11:46:59,620 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:46:59,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 172 events. 14/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-08-30 11:46:59,624 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2023-08-30 11:47:04,860 INFO L134 LiptonReduction]: Checked pairs total: 1454 [2023-08-30 11:47:04,861 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-30 11:47:04,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:47:04,880 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;@25076bce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:47:04,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 11:47:04,884 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:47:04,884 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:47:04,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:04,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:47:04,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:04,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash 25153, now seen corresponding path program 1 times [2023-08-30 11:47:04,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:04,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452180719] [2023-08-30 11:47:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:04,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:05,203 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 11:47:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452180719] [2023-08-30 11:47:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452180719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:05,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:05,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291725398] [2023-08-30 11:47:05,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:05,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:05,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:05,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:05,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:05,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:05,377 INFO L130 PetriNetUnfolder]: 177/288 cut-off events. [2023-08-30 11:47:05,377 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 11:47:05,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 288 events. 177/288 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1087 event pairs, 106 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 524. Up to 284 conditions per place. [2023-08-30 11:47:05,382 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 25 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 11:47:05,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 115 flow [2023-08-30 11:47:05,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 11:47:05,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-08-30 11:47:05,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 11:47:05,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 11:47:05,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:05,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 11:47:05,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,426 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 71 flow. Second operand 3 states and 510 transitions. [2023-08-30 11:47:05,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 115 flow [2023-08-30 11:47:05,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:47:05,432 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 60 flow [2023-08-30 11:47:05,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-30 11:47:05,438 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-30 11:47:05,439 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 60 flow [2023-08-30 11:47:05,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:05,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:47:05,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:47:05,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:05,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:05,453 INFO L85 PathProgramCache]: Analyzing trace with hash 25172, now seen corresponding path program 1 times [2023-08-30 11:47:05,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:05,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805762282] [2023-08-30 11:47:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:05,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:05,551 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 11:47:05,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805762282] [2023-08-30 11:47:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805762282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:05,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:05,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:05,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468038987] [2023-08-30 11:47:05,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:05,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:05,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:05,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:05,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:05,719 INFO L130 PetriNetUnfolder]: 353/573 cut-off events. [2023-08-30 11:47:05,720 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:47:05,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 573 events. 353/573 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2585 event pairs, 212 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1170. Up to 285 conditions per place. [2023-08-30 11:47:05,725 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-30 11:47:05,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 208 flow [2023-08-30 11:47:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:05,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-30 11:47:05,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2023-08-30 11:47:05,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-30 11:47:05,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-30 11:47:05,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:05,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-30 11:47:05,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,735 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 60 flow. Second operand 3 states and 531 transitions. [2023-08-30 11:47:05,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 208 flow [2023-08-30 11:47:05,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 50 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:05,737 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 91 flow [2023-08-30 11:47:05,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-08-30 11:47:05,738 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-08-30 11:47:05,738 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 91 flow [2023-08-30 11:47:05,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:05,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:47:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:47:05,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:05,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash 781045, now seen corresponding path program 1 times [2023-08-30 11:47:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:05,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092728069] [2023-08-30 11:47:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:05,796 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 11:47:05,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:05,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092728069] [2023-08-30 11:47:05,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092728069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:05,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328205257] [2023-08-30 11:47:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:05,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:05,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:05,801 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 11:47:05,821 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 11:47:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:05,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:05,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:05,920 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 11:47:05,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:05,941 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 11:47:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328205257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:05,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:05,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 11:47:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425757073] [2023-08-30 11:47:05,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:47:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:47:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:47:05,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:05,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:05,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:05,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:05,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:06,276 INFO L130 PetriNetUnfolder]: 881/1428 cut-off events. [2023-08-30 11:47:06,276 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:47:06,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 1428 events. 881/1428 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7443 event pairs, 530 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 2942. Up to 285 conditions per place. [2023-08-30 11:47:06,284 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 105 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2023-08-30 11:47:06,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 119 transitions, 545 flow [2023-08-30 11:47:06,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:47:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:47:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1084 transitions. [2023-08-30 11:47:06,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882882882882883 [2023-08-30 11:47:06,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1084 transitions. [2023-08-30 11:47:06,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1084 transitions. [2023-08-30 11:47:06,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:06,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1084 transitions. [2023-08-30 11:47:06,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,296 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,297 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 91 flow. Second operand 6 states and 1084 transitions. [2023-08-30 11:47:06,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 119 transitions, 545 flow [2023-08-30 11:47:06,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 119 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:06,300 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 176 flow [2023-08-30 11:47:06,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-08-30 11:47:06,301 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 11:47:06,301 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 176 flow [2023-08-30 11:47:06,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:06,302 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:47:06,312 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 11:47:06,507 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 11:47:06,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:06,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1793983124, now seen corresponding path program 2 times [2023-08-30 11:47:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489104719] [2023-08-30 11:47:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:06,640 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 11:47:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489104719] [2023-08-30 11:47:06,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489104719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:06,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534227758] [2023-08-30 11:47:06,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:06,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:06,643 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 11:47:06,645 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 11:47:06,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:06,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:06,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:06,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:06,724 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 11:47:06,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534227758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:06,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:06,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:47:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879740482] [2023-08-30 11:47:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:47:06,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 370 [2023-08-30 11:47:06,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:06,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 370 [2023-08-30 11:47:06,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:06,901 INFO L130 PetriNetUnfolder]: 881/1427 cut-off events. [2023-08-30 11:47:06,902 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 11:47:06,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 1427 events. 881/1427 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7680 event pairs, 530 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 2959. Up to 1402 conditions per place. [2023-08-30 11:47:06,909 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 31 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-30 11:47:06,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 240 flow [2023-08-30 11:47:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 11:47:06,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46126126126126127 [2023-08-30 11:47:06,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 11:47:06,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 11:47:06,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:06,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 11:47:06,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,916 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 176 flow. Second operand 3 states and 512 transitions. [2023-08-30 11:47:06,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 240 flow [2023-08-30 11:47:06,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 221 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:06,918 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 159 flow [2023-08-30 11:47:06,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-08-30 11:47:06,919 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 11:47:06,919 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 159 flow [2023-08-30 11:47:06,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:06,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:06,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:47:06,926 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 11:47:07,125 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 11:47:07,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:07,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1806151333, now seen corresponding path program 1 times [2023-08-30 11:47:07,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:07,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858996376] [2023-08-30 11:47:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:07,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:07,180 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 11:47:07,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858996376] [2023-08-30 11:47:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858996376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:07,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:07,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883690963] [2023-08-30 11:47:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:07,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:07,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:07,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 370 [2023-08-30 11:47:07,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:07,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 370 [2023-08-30 11:47:07,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:07,440 INFO L130 PetriNetUnfolder]: 1651/2607 cut-off events. [2023-08-30 11:47:07,440 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 11:47:07,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 2607 events. 1651/2607 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 15194 event pairs, 425 based on Foata normal form. 0/1532 useless extension candidates. Maximal degree in co-relation 5374. Up to 1556 conditions per place. [2023-08-30 11:47:07,454 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 51 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 11:47:07,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 300 flow [2023-08-30 11:47:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 11:47:07,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846846846846847 [2023-08-30 11:47:07,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 11:47:07,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 11:47:07,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:07,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 11:47:07,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,461 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 159 flow. Second operand 3 states and 538 transitions. [2023-08-30 11:47:07,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 300 flow [2023-08-30 11:47:07,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:07,463 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 161 flow [2023-08-30 11:47:07,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-30 11:47:07,464 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-30 11:47:07,464 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 161 flow [2023-08-30 11:47:07,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:07,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:47:07,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:47:07,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:07,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1806148252, now seen corresponding path program 1 times [2023-08-30 11:47:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955948958] [2023-08-30 11:47:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:07,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:07,523 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 11:47:07,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955948958] [2023-08-30 11:47:07,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955948958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:47:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380720019] [2023-08-30 11:47:07,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:07,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:47:07,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:07,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:47:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:47:07,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 370 [2023-08-30 11:47:07,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:07,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 370 [2023-08-30 11:47:07,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:07,883 INFO L130 PetriNetUnfolder]: 1976/3303 cut-off events. [2023-08-30 11:47:07,883 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 11:47:07,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 3303 events. 1976/3303 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 21524 event pairs, 1320 based on Foata normal form. 60/2097 useless extension candidates. Maximal degree in co-relation 7300. Up to 2586 conditions per place. [2023-08-30 11:47:07,901 INFO L137 encePairwiseOnDemand]: 363/370 looper letters, 52 selfloop transitions, 3 changer transitions 4/60 dead transitions. [2023-08-30 11:47:07,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 361 flow [2023-08-30 11:47:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:47:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:47:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-08-30 11:47:07,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2023-08-30 11:47:07,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-08-30 11:47:07,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-08-30 11:47:07,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:07,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-08-30 11:47:07,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,908 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 161 flow. Second operand 4 states and 655 transitions. [2023-08-30 11:47:07,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 361 flow [2023-08-30 11:47:07,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:07,910 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 174 flow [2023-08-30 11:47:07,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 11:47:07,911 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-30 11:47:07,912 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 174 flow [2023-08-30 11:47:07,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:07,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:07,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:47:07,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:07,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -208932163, now seen corresponding path program 1 times [2023-08-30 11:47:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:07,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519114347] [2023-08-30 11:47:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:07,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:08,016 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 11:47:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519114347] [2023-08-30 11:47:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519114347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188068303] [2023-08-30 11:47:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:08,025 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 11:47:08,045 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 11:47:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:08,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:08,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:08,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188068303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:08,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:08,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 11:47:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598984716] [2023-08-30 11:47:08,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:08,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:47:08,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:08,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:47:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:47:08,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 370 [2023-08-30 11:47:08,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:08,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:08,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 370 [2023-08-30 11:47:08,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:08,480 INFO L130 PetriNetUnfolder]: 1474/2467 cut-off events. [2023-08-30 11:47:08,481 INFO L131 PetriNetUnfolder]: For 270/294 co-relation queries the response was YES. [2023-08-30 11:47:08,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 2467 events. 1474/2467 cut-off events. For 270/294 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 15347 event pairs, 972 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 5976. Up to 2430 conditions per place. [2023-08-30 11:47:08,495 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 11:47:08,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 244 flow [2023-08-30 11:47:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:47:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:47:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-30 11:47:08,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43445945945945946 [2023-08-30 11:47:08,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-30 11:47:08,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-30 11:47:08,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:08,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-30 11:47:08,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:08,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:08,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:08,503 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 174 flow. Second operand 4 states and 643 transitions. [2023-08-30 11:47:08,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 244 flow [2023-08-30 11:47:08,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 238 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:08,506 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 186 flow [2023-08-30 11:47:08,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-30 11:47:08,506 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-30 11:47:08,507 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 186 flow [2023-08-30 11:47:08,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:08,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:08,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:47:08,519 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 11:47:08,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:08,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:08,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash 157761778, now seen corresponding path program 1 times [2023-08-30 11:47:08,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:08,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059494941] [2023-08-30 11:47:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:08,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:08,782 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 11:47:08,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:08,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059494941] [2023-08-30 11:47:08,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059494941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:08,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218094856] [2023-08-30 11:47:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:08,784 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 11:47:08,787 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 11:47:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:08,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:47:08,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:08,876 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 11:47:08,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:08,934 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 11:47:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218094856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:08,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:47:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305507343] [2023-08-30 11:47:08,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:08,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:47:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:47:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:47:09,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:09,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:09,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:09,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:09,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:09,853 INFO L130 PetriNetUnfolder]: 3682/6157 cut-off events. [2023-08-30 11:47:09,854 INFO L131 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2023-08-30 11:47:09,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 6157 events. 3682/6157 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 41294 event pairs, 2430 based on Foata normal form. 12/4496 useless extension candidates. Maximal degree in co-relation 14924. Up to 1581 conditions per place. [2023-08-30 11:47:09,888 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 204 selfloop transitions, 31 changer transitions 0/236 dead transitions. [2023-08-30 11:47:09,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1316 flow [2023-08-30 11:47:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:47:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:47:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2151 transitions. [2023-08-30 11:47:09,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48445945945945945 [2023-08-30 11:47:09,895 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2151 transitions. [2023-08-30 11:47:09,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2151 transitions. [2023-08-30 11:47:09,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:09,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2151 transitions. [2023-08-30 11:47:09,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.25) internal successors, (2151), 12 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:09,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:09,908 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:09,908 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 186 flow. Second operand 12 states and 2151 transitions. [2023-08-30 11:47:09,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1316 flow [2023-08-30 11:47:09,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 236 transitions, 1287 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:47:09,914 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 385 flow [2023-08-30 11:47:09,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-30 11:47:09,915 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 11:47:09,915 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 385 flow [2023-08-30 11:47:09,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:09,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:09,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:09,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:10,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:10,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2114722249, now seen corresponding path program 1 times [2023-08-30 11:47:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774697346] [2023-08-30 11:47:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:10,204 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 11:47:10,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:10,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774697346] [2023-08-30 11:47:10,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774697346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:10,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371738073] [2023-08-30 11:47:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:10,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:10,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:10,207 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 11:47:10,234 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 11:47:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:10,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:47:10,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371738073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:47:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511084252] [2023-08-30 11:47:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:10,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:47:10,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-08-30 11:47:10,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:10,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:10,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-08-30 11:47:10,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:10,748 INFO L130 PetriNetUnfolder]: 2642/4617 cut-off events. [2023-08-30 11:47:10,748 INFO L131 PetriNetUnfolder]: For 598/598 co-relation queries the response was YES. [2023-08-30 11:47:10,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 4617 events. 2642/4617 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31286 event pairs, 1790 based on Foata normal form. 0/3807 useless extension candidates. Maximal degree in co-relation 10899. Up to 4537 conditions per place. [2023-08-30 11:47:10,768 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 49 selfloop transitions, 1 changer transitions 3/54 dead transitions. [2023-08-30 11:47:10,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 483 flow [2023-08-30 11:47:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 11:47:10,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2023-08-30 11:47:10,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 11:47:10,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 11:47:10,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:10,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 11:47:10,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:10,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:10,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:10,775 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 385 flow. Second operand 3 states and 516 transitions. [2023-08-30 11:47:10,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 483 flow [2023-08-30 11:47:10,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 393 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 11:47:10,779 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 282 flow [2023-08-30 11:47:10,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-08-30 11:47:10,780 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-30 11:47:10,780 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 282 flow [2023-08-30 11:47:10,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:10,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:10,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:10,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:47:10,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:10,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:10,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1234282000, now seen corresponding path program 1 times [2023-08-30 11:47:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074041658] [2023-08-30 11:47:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:10,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:11,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:11,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074041658] [2023-08-30 11:47:11,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074041658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:11,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523268933] [2023-08-30 11:47:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:11,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:11,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:11,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:11,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:47:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:11,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:47:11,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:11,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:11,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523268933] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:11,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:11,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-30 11:47:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616128444] [2023-08-30 11:47:11,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:47:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:47:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:47:11,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 370 [2023-08-30 11:47:11,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:11,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:11,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 370 [2023-08-30 11:47:11,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:12,195 INFO L130 PetriNetUnfolder]: 2712/4581 cut-off events. [2023-08-30 11:47:12,196 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-30 11:47:12,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11011 conditions, 4581 events. 2712/4581 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29277 event pairs, 487 based on Foata normal form. 16/4015 useless extension candidates. Maximal degree in co-relation 10988. Up to 1836 conditions per place. [2023-08-30 11:47:12,217 INFO L137 encePairwiseOnDemand]: 361/370 looper letters, 54 selfloop transitions, 17 changer transitions 19/91 dead transitions. [2023-08-30 11:47:12,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 571 flow [2023-08-30 11:47:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:47:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:47:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1555 transitions. [2023-08-30 11:47:12,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027027027027025 [2023-08-30 11:47:12,222 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1555 transitions. [2023-08-30 11:47:12,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1555 transitions. [2023-08-30 11:47:12,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:12,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1555 transitions. [2023-08-30 11:47:12,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.5) internal successors, (1555), 10 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:12,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:12,232 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:12,232 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 282 flow. Second operand 10 states and 1555 transitions. [2023-08-30 11:47:12,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 571 flow [2023-08-30 11:47:12,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:12,239 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 333 flow [2023-08-30 11:47:12,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-08-30 11:47:12,240 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-30 11:47:12,240 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 333 flow [2023-08-30 11:47:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:12,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:12,241 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 11:47:12,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:12,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:12,448 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:12,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:12,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2075999010, now seen corresponding path program 2 times [2023-08-30 11:47:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583891967] [2023-08-30 11:47:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:47:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583891967] [2023-08-30 11:47:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583891967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337083157] [2023-08-30 11:47:12,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:12,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:12,526 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:12,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:47:12,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:12,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:12,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:12,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 11:47:12,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 11:47:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337083157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:12,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-08-30 11:47:12,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646915754] [2023-08-30 11:47:12,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:12,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:47:12,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:12,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:47:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:12,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-08-30 11:47:12,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:12,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:12,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-08-30 11:47:12,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:13,247 INFO L130 PetriNetUnfolder]: 3594/5906 cut-off events. [2023-08-30 11:47:13,247 INFO L131 PetriNetUnfolder]: For 1887/1905 co-relation queries the response was YES. [2023-08-30 11:47:13,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 5906 events. 3594/5906 cut-off events. For 1887/1905 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37962 event pairs, 441 based on Foata normal form. 0/5177 useless extension candidates. Maximal degree in co-relation 16111. Up to 1638 conditions per place. [2023-08-30 11:47:13,272 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 34 selfloop transitions, 1 changer transitions 55/90 dead transitions. [2023-08-30 11:47:13,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 625 flow [2023-08-30 11:47:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:47:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:47:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1188 transitions. [2023-08-30 11:47:13,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586872586872587 [2023-08-30 11:47:13,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1188 transitions. [2023-08-30 11:47:13,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1188 transitions. [2023-08-30 11:47:13,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:13,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1188 transitions. [2023-08-30 11:47:13,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.71428571428572) internal successors, (1188), 7 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,282 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 333 flow. Second operand 7 states and 1188 transitions. [2023-08-30 11:47:13,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 625 flow [2023-08-30 11:47:13,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 586 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 11:47:13,298 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 252 flow [2023-08-30 11:47:13,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 11:47:13,299 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-30 11:47:13,299 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 252 flow [2023-08-30 11:47:13,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:13,300 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 11:47:13,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:13,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:13,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1538947150, now seen corresponding path program 2 times [2023-08-30 11:47:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:13,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488807216] [2023-08-30 11:47:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:13,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:13,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488807216] [2023-08-30 11:47:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488807216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:13,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218679330] [2023-08-30 11:47:13,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:13,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:13,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:13,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:13,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:47:13,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:13,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:13,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:13,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 11:47:13,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218679330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 11:47:13,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541615517] [2023-08-30 11:47:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:13,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:47:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:47:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 11:47:13,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:13,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:13,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:13,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:13,858 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2023-08-30 11:47:13,859 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-30 11:47:13,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 45 events. 12/45 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 185. Up to 45 conditions per place. [2023-08-30 11:47:13,859 INFO L137 encePairwiseOnDemand]: 368/370 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 11:47:13,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 296 flow [2023-08-30 11:47:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 11:47:13,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2023-08-30 11:47:13,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 11:47:13,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 11:47:13,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:13,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 11:47:13,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,865 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 252 flow. Second operand 3 states and 485 transitions. [2023-08-30 11:47:13,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 296 flow [2023-08-30 11:47:13,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 34 transitions, 204 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-08-30 11:47:13,867 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-30 11:47:13,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-30 11:47:13,868 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-08-30 11:47:13,868 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-30 11:47:13,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:13,871 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 11:47:13,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 11:47:13,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 11:47:13,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 11:47:13,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:14,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 11:47:14,081 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:14,085 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:47:14,085 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:47:14,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:47:14 BasicIcfg [2023-08-30 11:47:14,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:47:14,087 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:47:14,087 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:47:14,087 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:47:14,088 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:46:59" (3/4) ... [2023-08-30 11:47:14,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:47:14,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:47:14,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:47:14,098 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 11:47:14,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:47:14,099 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:47:14,100 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:47:14,137 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:47:14,137 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:47:14,138 INFO L158 Benchmark]: Toolchain (without parser) took 15957.86ms. Allocated memory was 86.0MB in the beginning and 469.8MB in the end (delta: 383.8MB). Free memory was 65.6MB in the beginning and 122.3MB in the end (delta: -56.7MB). Peak memory consumption was 328.0MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,138 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:47:14,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.36ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 53.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.17ms. Allocated memory is still 86.0MB. Free memory was 53.7MB in the beginning and 51.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,139 INFO L158 Benchmark]: Boogie Preprocessor took 55.29ms. Allocated memory is still 86.0MB. Free memory was 51.3MB in the beginning and 49.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,139 INFO L158 Benchmark]: RCFGBuilder took 688.55ms. Allocated memory is still 86.0MB. Free memory was 49.5MB in the beginning and 41.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,139 INFO L158 Benchmark]: TraceAbstraction took 14817.02ms. Allocated memory was 86.0MB in the beginning and 469.8MB in the end (delta: 383.8MB). Free memory was 40.2MB in the beginning and 126.5MB in the end (delta: -86.3MB). Peak memory consumption was 298.4MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,139 INFO L158 Benchmark]: Witness Printer took 49.93ms. Allocated memory is still 469.8MB. Free memory was 126.5MB in the beginning and 122.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:47:14,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.36ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 53.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.17ms. Allocated memory is still 86.0MB. Free memory was 53.7MB in the beginning and 51.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.29ms. Allocated memory is still 86.0MB. Free memory was 51.3MB in the beginning and 49.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 688.55ms. Allocated memory is still 86.0MB. Free memory was 49.5MB in the beginning and 41.0MB in the end (delta: 8.5MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14817.02ms. Allocated memory was 86.0MB in the beginning and 469.8MB in the end (delta: 383.8MB). Free memory was 40.2MB in the beginning and 126.5MB in the end (delta: -86.3MB). Peak memory consumption was 298.4MB. Max. memory is 16.1GB. * Witness Printer took 49.93ms. Allocated memory is still 469.8MB. Free memory was 126.5MB in the beginning and 122.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 165 PlacesBefore, 33 PlacesAfterwards, 172 TransitionsBefore, 31 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 180 TotalNumberOfCompositions, 1454 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1054, independent: 997, independent conditional: 0, independent unconditional: 997, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 480, independent: 467, independent conditional: 0, independent unconditional: 467, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1054, independent: 530, independent conditional: 0, independent unconditional: 530, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 480, unknown conditional: 0, unknown unconditional: 480] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 206 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.7s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1719 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1421 mSDsluCounter, 483 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 111 mSDtfsCounter, 1937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 146 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 524 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 91/205 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:47:14,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE