./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-mts.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-mts.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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --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 11:48:06,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:48:06,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:48:06,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:48:06,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:48:06,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:48:06,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:48:06,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:48:06,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:48:06,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:48:06,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:48:06,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:48:06,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:48:06,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:48:06,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:48:06,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:48:06,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:48:06,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:48:06,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:48:06,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:48:06,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:48:06,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:48:06,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:48:06,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:48:06,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:48:06,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:48:06,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:48:06,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:48:06,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:48:06,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:48:06,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:48:06,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:48:06,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:48:06,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:48:06,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:48:06,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:48:06,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:48:06,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:48:06,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:48:06,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:48:06,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:48:06,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:48:06,487 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:48:06,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:48:06,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:48:06,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:48:06,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:48:06,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:48:06,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:48:06,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:48:06,491 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:48:06,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:48:06,492 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:48:06,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:48:06,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:48:06,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:48:06,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:48:06,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:48:06,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:48:06,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:48:06,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:48:06,494 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:48:06,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:48:06,494 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:48:06,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:48:06,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:48:06,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:48:06,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:48:06,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:06,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:48:06,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:48:06,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:48:06,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:48:06,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:48:06,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:48:06,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:48:06,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:48:06,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:48:06,497 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:48:06,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:48:06,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:48:06,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:48:06,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:48:06,822 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:48:06,822 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:48:06,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-30 11:48:08,094 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:48:08,296 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:48:08,297 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-mts.wvr.c [2023-08-30 11:48:08,305 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c5c6245/b120b3ae42d54079ae71f4640ad24e8c/FLAGa47538c88 [2023-08-30 11:48:08,325 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c5c6245/b120b3ae42d54079ae71f4640ad24e8c [2023-08-30 11:48:08,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:48:08,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:48:08,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:08,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:48:08,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:48:08,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125c8ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08, skipping insertion in model container [2023-08-30 11:48:08,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:48:08,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:48:08,559 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-mts.wvr.c[2533,2546] [2023-08-30 11:48:08,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:08,583 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:48:08,622 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-mts.wvr.c[2533,2546] [2023-08-30 11:48:08,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:08,636 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:48:08,636 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:48:08,642 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:48:08,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08 WrapperNode [2023-08-30 11:48:08,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:08,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:08,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:48:08,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:48:08,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,709 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 306 [2023-08-30 11:48:08,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:08,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:48:08,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:48:08,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:48:08,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:48:08,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:48:08,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:48:08,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:48:08,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (1/1) ... [2023-08-30 11:48:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:08,788 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 11:48:08,797 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 11:48:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:48:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:48:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:48:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:48:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:48:08,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:48:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:48:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:48:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:48:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:48:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:48:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:48:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:48:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:48:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:48:08,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:48:08,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:48:08,820 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 11:48:08,941 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:48:08,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:48:09,519 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:48:09,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:48:09,959 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:48:09,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:09 BoogieIcfgContainer [2023-08-30 11:48:09,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:48:09,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:48:09,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:48:09,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:48:09,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:48:08" (1/3) ... [2023-08-30 11:48:09,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adbbea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:09, skipping insertion in model container [2023-08-30 11:48:09,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:08" (2/3) ... [2023-08-30 11:48:09,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adbbea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:09, skipping insertion in model container [2023-08-30 11:48:09,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:09" (3/3) ... [2023-08-30 11:48:09,969 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2023-08-30 11:48:09,982 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:48:09,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:48:09,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 11:48:09,990 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:48:10,215 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:48:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 299 transitions, 622 flow [2023-08-30 11:48:10,423 INFO L130 PetriNetUnfolder]: 23/296 cut-off events. [2023-08-30 11:48:10,424 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:48:10,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 23/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 761 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 2 conditions per place. [2023-08-30 11:48:10,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 286 places, 299 transitions, 622 flow [2023-08-30 11:48:10,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 275 transitions, 568 flow [2023-08-30 11:48:10,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:48:10,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 275 transitions, 568 flow [2023-08-30 11:48:10,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 275 transitions, 568 flow [2023-08-30 11:48:10,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 275 transitions, 568 flow [2023-08-30 11:48:10,538 INFO L130 PetriNetUnfolder]: 21/275 cut-off events. [2023-08-30 11:48:10,539 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:48:10,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 275 events. 21/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 231. Up to 2 conditions per place. [2023-08-30 11:48:10,554 INFO L119 LiptonReduction]: Number of co-enabled transitions 21924 [2023-08-30 11:48:33,693 INFO L134 LiptonReduction]: Checked pairs total: 26523 [2023-08-30 11:48:33,693 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-08-30 11:48:33,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:48:33,712 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;@1071b828, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:48:33,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-08-30 11:48:33,715 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:48:33,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:48:33,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:33,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:48:33,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:48:33,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 48150, now seen corresponding path program 1 times [2023-08-30 11:48:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:33,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718950738] [2023-08-30 11:48:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:34,031 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 11:48:34,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:34,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718950738] [2023-08-30 11:48:34,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718950738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:34,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:34,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:48:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660035618] [2023-08-30 11:48:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:34,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:34,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:34,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-08-30 11:48:34,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:34,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:34,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-08-30 11:48:34,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:39,811 INFO L130 PetriNetUnfolder]: 30525/38649 cut-off events. [2023-08-30 11:48:39,811 INFO L131 PetriNetUnfolder]: For 511/511 co-relation queries the response was YES. [2023-08-30 11:48:39,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78071 conditions, 38649 events. 30525/38649 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 3851. Compared 217828 event pairs, 16960 based on Foata normal form. 0/9985 useless extension candidates. Maximal degree in co-relation 36512. Up to 19227 conditions per place. [2023-08-30 11:48:40,053 INFO L137 encePairwiseOnDemand]: 618/636 looper letters, 99 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-08-30 11:48:40,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 446 flow [2023-08-30 11:48:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-30 11:48:40,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806079664570231 [2023-08-30 11:48:40,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-30 11:48:40,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-30 11:48:40,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:40,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-30 11:48:40,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:40,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:40,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:40,098 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 156 flow. Second operand 3 states and 917 transitions. [2023-08-30 11:48:40,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 446 flow [2023-08-30 11:48:40,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 104 transitions, 422 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 11:48:40,251 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 130 flow [2023-08-30 11:48:40,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-30 11:48:40,260 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-08-30 11:48:40,262 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 130 flow [2023-08-30 11:48:40,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:40,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:40,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:40,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:48:40,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:48:40,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1495540, now seen corresponding path program 1 times [2023-08-30 11:48:40,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:40,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871445200] [2023-08-30 11:48:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871445200] [2023-08-30 11:48:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871445200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:40,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:40,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252265374] [2023-08-30 11:48:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:40,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-08-30 11:48:40,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:40,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:40,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-08-30 11:48:40,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:44,967 INFO L130 PetriNetUnfolder]: 30525/38648 cut-off events. [2023-08-30 11:48:44,967 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 11:48:45,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77445 conditions, 38648 events. 30525/38648 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4217. Compared 219084 event pairs, 16960 based on Foata normal form. 0/9921 useless extension candidates. Maximal degree in co-relation 38720. Up to 38448 conditions per place. [2023-08-30 11:48:45,173 INFO L137 encePairwiseOnDemand]: 634/636 looper letters, 51 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-30 11:48:45,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 230 flow [2023-08-30 11:48:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-08-30 11:48:45,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392033542976939 [2023-08-30 11:48:45,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-08-30 11:48:45,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-08-30 11:48:45,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:45,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-08-30 11:48:45,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:45,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:45,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:45,185 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 130 flow. Second operand 3 states and 838 transitions. [2023-08-30 11:48:45,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 230 flow [2023-08-30 11:48:45,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:45,187 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 126 flow [2023-08-30 11:48:45,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-30 11:48:45,188 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -17 predicate places. [2023-08-30 11:48:45,188 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 126 flow [2023-08-30 11:48:45,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:45,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:45,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:45,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:48:45,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:48:45,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1495552, now seen corresponding path program 1 times [2023-08-30 11:48:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:45,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743632303] [2023-08-30 11:48:45,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:45,305 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 11:48:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743632303] [2023-08-30 11:48:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743632303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578773896] [2023-08-30 11:48:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:45,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:45,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:45,313 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 11:48:45,317 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 11:48:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:45,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:45,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:45,539 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 11:48:45,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:45,566 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 11:48:45,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578773896] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:45,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:45,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:48:45,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637874078] [2023-08-30 11:48:45,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:45,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:48:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:48:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:45,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 636 [2023-08-30 11:48:45,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:45,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:45,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 636 [2023-08-30 11:48:45,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:56,413 INFO L130 PetriNetUnfolder]: 76311/96617 cut-off events. [2023-08-30 11:48:56,413 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 11:48:56,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193596 conditions, 96617 events. 76311/96617 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 8184. Compared 591706 event pairs, 42400 based on Foata normal form. 0/25065 useless extension candidates. Maximal degree in co-relation 193588. Up to 19226 conditions per place. [2023-08-30 11:48:56,782 INFO L137 encePairwiseOnDemand]: 633/636 looper letters, 242 selfloop transitions, 5 changer transitions 0/250 dead transitions. [2023-08-30 11:48:56,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 250 transitions, 1040 flow [2023-08-30 11:48:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:48:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:48:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1822 transitions. [2023-08-30 11:48:56,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47746331236897277 [2023-08-30 11:48:56,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1822 transitions. [2023-08-30 11:48:56,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1822 transitions. [2023-08-30 11:48:56,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:56,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1822 transitions. [2023-08-30 11:48:56,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:56,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:56,801 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 636.0) internal successors, (4452), 7 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:56,801 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 126 flow. Second operand 6 states and 1822 transitions. [2023-08-30 11:48:56,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 250 transitions, 1040 flow [2023-08-30 11:48:56,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 250 transitions, 1039 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:56,805 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 161 flow [2023-08-30 11:48:56,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-30 11:48:56,806 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-08-30 11:48:56,806 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 161 flow [2023-08-30 11:48:56,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:56,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:56,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:48:56,817 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 11:48:57,014 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 11:48:57,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:48:57,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:57,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1437414625, now seen corresponding path program 1 times [2023-08-30 11:48:57,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:57,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578284518] [2023-08-30 11:48:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:57,145 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 11:48:57,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:57,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578284518] [2023-08-30 11:48:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578284518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:48:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612126449] [2023-08-30 11:48:57,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:57,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:48:57,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:48:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:48:57,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 636 [2023-08-30 11:48:57,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:57,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:57,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 636 [2023-08-30 11:48:57,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:05,131 INFO L130 PetriNetUnfolder]: 54449/70695 cut-off events. [2023-08-30 11:49:05,132 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 11:49:05,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141725 conditions, 70695 events. 54449/70695 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6967. Compared 455399 event pairs, 33964 based on Foata normal form. 1/19852 useless extension candidates. Maximal degree in co-relation 141713. Up to 70323 conditions per place. [2023-08-30 11:49:05,432 INFO L137 encePairwiseOnDemand]: 633/636 looper letters, 54 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-30 11:49:05,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 273 flow [2023-08-30 11:49:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 11:49:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308176100628931 [2023-08-30 11:49:05,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 11:49:05,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 11:49:05,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:05,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 11:49:05,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:05,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:05,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:05,441 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 161 flow. Second operand 3 states and 822 transitions. [2023-08-30 11:49:05,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 273 flow [2023-08-30 11:49:05,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 263 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:05,443 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 159 flow [2023-08-30 11:49:05,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2023-08-30 11:49:05,444 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-30 11:49:05,445 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 159 flow [2023-08-30 11:49:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:05,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:05,446 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:49:05,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:49:05,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:49:05,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1606828962, now seen corresponding path program 2 times [2023-08-30 11:49:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546931518] [2023-08-30 11:49:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:05,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:05,523 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 11:49:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546931518] [2023-08-30 11:49:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546931518] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910530866] [2023-08-30 11:49:05,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:05,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:05,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:05,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:05,532 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 11:49:05,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:05,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:05,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:49:05,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:05,709 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 11:49:05,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910530866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:05,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:05,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:49:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393099095] [2023-08-30 11:49:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:05,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:05,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:05,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:49:05,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-08-30 11:49:05,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:05,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:05,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-08-30 11:49:05,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:14,189 INFO L130 PetriNetUnfolder]: 61049/77294 cut-off events. [2023-08-30 11:49:14,189 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 11:49:14,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154895 conditions, 77294 events. 61049/77294 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 7277. Compared 467549 event pairs, 33920 based on Foata normal form. 1/19843 useless extension candidates. Maximal degree in co-relation 154881. Up to 76894 conditions per place. [2023-08-30 11:49:14,583 INFO L137 encePairwiseOnDemand]: 634/636 looper letters, 53 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-08-30 11:49:14,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 257 flow [2023-08-30 11:49:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-30 11:49:14,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44025157232704404 [2023-08-30 11:49:14,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-30 11:49:14,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-30 11:49:14,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:14,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-30 11:49:14,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:14,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:14,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:14,594 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 159 flow. Second operand 3 states and 840 transitions. [2023-08-30 11:49:14,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 257 flow [2023-08-30 11:49:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 243 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 11:49:14,596 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 137 flow [2023-08-30 11:49:14,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-30 11:49:14,597 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -13 predicate places. [2023-08-30 11:49:14,597 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 137 flow [2023-08-30 11:49:14,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:14,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:14,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:49:14,604 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 11:49:14,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:14,804 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:49:14,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937155, now seen corresponding path program 1 times [2023-08-30 11:49:14,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:14,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649268529] [2023-08-30 11:49:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:14,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:15,140 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 11:49:15,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:15,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649268529] [2023-08-30 11:49:15,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649268529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:15,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020346660] [2023-08-30 11:49:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:15,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:15,143 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 11:49:15,146 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 11:49:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:15,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:49:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:15,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:49:15,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:49:15,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 11:49:15,427 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 11:49:15,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:15,473 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_173 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_173) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2023-08-30 11:49:15,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:49:15,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-30 11:49:15,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:49:15,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-30 11:49:15,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-30 11:49:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 11:49:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020346660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:15,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 11:49:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029536363] [2023-08-30 11:49:15,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:15,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:49:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:49:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-30 11:49:15,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 636 [2023-08-30 11:49:15,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 137 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:15,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:15,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 636 [2023-08-30 11:49:15,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:28,534 INFO L130 PetriNetUnfolder]: 88501/115186 cut-off events. [2023-08-30 11:49:28,534 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 11:49:28,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231141 conditions, 115186 events. 88501/115186 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12025. Compared 795450 event pairs, 24032 based on Foata normal form. 0/32066 useless extension candidates. Maximal degree in co-relation 231131. Up to 66073 conditions per place. [2023-08-30 11:49:28,999 INFO L137 encePairwiseOnDemand]: 621/636 looper letters, 91 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2023-08-30 11:49:29,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 477 flow [2023-08-30 11:49:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:49:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:49:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1976 transitions. [2023-08-30 11:49:29,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38836477987421386 [2023-08-30 11:49:29,005 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1976 transitions. [2023-08-30 11:49:29,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1976 transitions. [2023-08-30 11:49:29,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:29,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1976 transitions. [2023-08-30 11:49:29,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:29,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:29,017 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 636.0) internal successors, (5724), 9 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:29,017 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 137 flow. Second operand 8 states and 1976 transitions. [2023-08-30 11:49:29,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 477 flow [2023-08-30 11:49:29,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:29,020 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 254 flow [2023-08-30 11:49:29,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-08-30 11:49:29,021 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-08-30 11:49:29,021 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 254 flow [2023-08-30 11:49:29,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:29,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:29,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:49:29,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:49:29,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:29,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:49:29,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937177, now seen corresponding path program 1 times [2023-08-30 11:49:29,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:29,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404642519] [2023-08-30 11:49:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:29,287 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 11:49:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404642519] [2023-08-30 11:49:29,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404642519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:29,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:29,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:49:29,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496502099] [2023-08-30 11:49:29,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:29,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:29,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:29,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:29,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-08-30 11:49:29,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:29,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:29,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-08-30 11:49:29,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:53,797 INFO L130 PetriNetUnfolder]: 165445/212978 cut-off events. [2023-08-30 11:49:53,797 INFO L131 PetriNetUnfolder]: For 15318/15318 co-relation queries the response was YES. [2023-08-30 11:49:54,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464266 conditions, 212978 events. 165445/212978 cut-off events. For 15318/15318 co-relation queries the response was YES. Maximal size of possible extension queue 16076. Compared 1475280 event pairs, 52164 based on Foata normal form. 0/69474 useless extension candidates. Maximal degree in co-relation 464252. Up to 108902 conditions per place. [2023-08-30 11:49:54,867 INFO L137 encePairwiseOnDemand]: 631/636 looper letters, 118 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2023-08-30 11:49:54,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 668 flow [2023-08-30 11:49:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-08-30 11:49:54,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638364779874214 [2023-08-30 11:49:54,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-08-30 11:49:54,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-08-30 11:49:54,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:54,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-08-30 11:49:54,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:54,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:54,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:54,875 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 254 flow. Second operand 3 states and 885 transitions. [2023-08-30 11:49:54,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 668 flow [2023-08-30 11:49:54,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 662 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:54,973 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 304 flow [2023-08-30 11:49:54,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2023-08-30 11:49:54,974 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-30 11:49:54,974 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 304 flow [2023-08-30 11:49:54,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:54,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:54,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:49:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:49:54,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:49:54,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937178, now seen corresponding path program 1 times [2023-08-30 11:49:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814854745] [2023-08-30 11:49:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:55,020 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 11:49:55,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:55,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814854745] [2023-08-30 11:49:55,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814854745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:55,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:55,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:49:55,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729481763] [2023-08-30 11:49:55,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:55,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:55,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:55,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:55,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 636 [2023-08-30 11:49:55,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:49:55,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:55,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 636 [2023-08-30 11:49:55,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:50:19,851 INFO L130 PetriNetUnfolder]: 163377/210906 cut-off events. [2023-08-30 11:50:19,851 INFO L131 PetriNetUnfolder]: For 37896/37896 co-relation queries the response was YES. [2023-08-30 11:50:20,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472707 conditions, 210906 events. 163377/210906 cut-off events. For 37896/37896 co-relation queries the response was YES. Maximal size of possible extension queue 16112. Compared 1475141 event pairs, 48812 based on Foata normal form. 0/78586 useless extension candidates. Maximal degree in co-relation 472691. Up to 112257 conditions per place. [2023-08-30 11:50:20,914 INFO L137 encePairwiseOnDemand]: 632/636 looper letters, 117 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2023-08-30 11:50:20,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 125 transitions, 676 flow [2023-08-30 11:50:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:50:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:50:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-08-30 11:50:20,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46331236897274636 [2023-08-30 11:50:20,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-08-30 11:50:20,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-08-30 11:50:20,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:50:20,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-08-30 11:50:20,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:20,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:20,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 636.0) internal successors, (2544), 4 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:20,922 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 304 flow. Second operand 3 states and 884 transitions. [2023-08-30 11:50:20,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 125 transitions, 676 flow [2023-08-30 11:50:21,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 125 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:50:21,023 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 282 flow [2023-08-30 11:50:21,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=636, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-08-30 11:50:21,023 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-30 11:50:21,024 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 282 flow [2023-08-30 11:50:21,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:21,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:50:21,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:50:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:50:21,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2023-08-30 11:50:21,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:50:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1606937179, now seen corresponding path program 1 times [2023-08-30 11:50:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:50:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151091774] [2023-08-30 11:50:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:50:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:21,306 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 11:50:21,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:50:21,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151091774] [2023-08-30 11:50:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151091774] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:50:21,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183630200] [2023-08-30 11:50:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:50:21,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:50:21,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:50:21,308 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 11:50:21,313 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 11:50:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:50:21,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:50:21,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:50:21,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 11:50:21,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:50:21,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 11:50:21,548 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 11:50:21,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:50:21,581 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2023-08-30 11:50:21,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:50:21,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-08-30 11:50:21,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:50:21,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-08-30 11:50:21,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 11:50:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 11:50:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183630200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:50:21,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:50:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-30 11:50:21,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640763786] [2023-08-30 11:50:21,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:50:21,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:50:21,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:50:21,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:50:21,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-08-30 11:50:21,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 636 [2023-08-30 11:50:21,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 234.30769230769232) internal successors, (3046), 13 states have internal predecessors, (3046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:50:21,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:50:21,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 636 [2023-08-30 11:50:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand