./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.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-bad-ring.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 e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 --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 11:29:11,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:29:11,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:29:11,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:29:11,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:29:11,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:29:11,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:29:11,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:29:11,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:29:11,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:29:11,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:29:11,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:29:11,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:29:11,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:29:11,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:29:11,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:29:11,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:29:11,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:29:11,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:29:11,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:29:11,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:29:11,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:29:11,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:29:11,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:29:11,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:29:11,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:29:11,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:29:11,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:29:11,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:29:11,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:29:11,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:29:11,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:29:11,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:29:11,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:29:11,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:29:11,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:29:11,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:29:11,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:29:11,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:29:11,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:29:11,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:29:11,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:29:11,753 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:29:11,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:29:11,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:29:11,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:29:11,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:29:11,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:29:11,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:29:11,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:29:11,757 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:29:11,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:29:11,758 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:29:11,758 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:29:11,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:29:11,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:29:11,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:29:11,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:29:11,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:29:11,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:29:11,760 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:29:11,760 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:29:11,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:29:11,760 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:29:11,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:29:11,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:29:11,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:29:11,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:29:11,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:29:11,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:29:11,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:29:11,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:29:11,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:29:11,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:29:11,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:29:11,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:29:11,763 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:29:11,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:29:11,763 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:29:11,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1611f006d8b4d3ca09ba5acfb7e64e93bdf2d1c3a87f0ab00b1667331afb989 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:29:12,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:29:12,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:29:12,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:29:12,086 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:29:12,087 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:29:12,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-08-30 11:29:13,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:29:13,395 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:29:13,396 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2023-08-30 11:29:13,401 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cb01b4f/b824a2df79ea4231a40d39fb88824d05/FLAG450efbfbb [2023-08-30 11:29:13,415 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cb01b4f/b824a2df79ea4231a40d39fb88824d05 [2023-08-30 11:29:13,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:29:13,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:29:13,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:29:13,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:29:13,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:29:13,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6e4083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13, skipping insertion in model container [2023-08-30 11:29:13,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:29:13,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:29:13,641 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-bad-ring.wvr.c[3947,3960] [2023-08-30 11:29:13,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:29:13,655 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:29:13,697 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-bad-ring.wvr.c[3947,3960] [2023-08-30 11:29:13,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:29:13,716 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:29:13,722 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:29:13,728 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:29:13,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13 WrapperNode [2023-08-30 11:29:13,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:29:13,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:29:13,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:29:13,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:29:13,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,792 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 357 [2023-08-30 11:29:13,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:29:13,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:29:13,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:29:13,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:29:13,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:29:13,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:29:13,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:29:13,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:29:13,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (1/1) ... [2023-08-30 11:29:13,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:29:13,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:13,870 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 11:29:13,875 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 11:29:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:29:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:29:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:29:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:29:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:29:13,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:29:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:29:13,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:29:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:29:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:29:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:29:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:29:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:29:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:29:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:29:13,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:29:13,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:29:13,901 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 11:29:13,996 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:29:13,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:29:14,602 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:29:14,873 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:29:14,874 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 11:29:14,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:29:14 BoogieIcfgContainer [2023-08-30 11:29:14,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:29:14,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:29:14,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:29:14,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:29:14,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:29:13" (1/3) ... [2023-08-30 11:29:14,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cf7f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:29:14, skipping insertion in model container [2023-08-30 11:29:14,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:29:13" (2/3) ... [2023-08-30 11:29:14,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cf7f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:29:14, skipping insertion in model container [2023-08-30 11:29:14,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:29:14" (3/3) ... [2023-08-30 11:29:14,886 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-08-30 11:29:14,893 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:29:14,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:29:14,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 11:29:14,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:29:15,029 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:29:15,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 299 transitions, 622 flow [2023-08-30 11:29:15,138 INFO L130 PetriNetUnfolder]: 22/296 cut-off events. [2023-08-30 11:29:15,138 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:29:15,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 22/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 357 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 250. Up to 3 conditions per place. [2023-08-30 11:29:15,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 299 transitions, 622 flow [2023-08-30 11:29:15,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 278 transitions, 571 flow [2023-08-30 11:29:15,155 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:29:15,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 278 transitions, 571 flow [2023-08-30 11:29:15,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 278 transitions, 571 flow [2023-08-30 11:29:15,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 278 transitions, 571 flow [2023-08-30 11:29:15,244 INFO L130 PetriNetUnfolder]: 21/278 cut-off events. [2023-08-30 11:29:15,245 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:29:15,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 278 events. 21/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 355 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 250. Up to 3 conditions per place. [2023-08-30 11:29:15,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 5314 [2023-08-30 11:29:25,745 INFO L134 LiptonReduction]: Checked pairs total: 14857 [2023-08-30 11:29:25,746 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-08-30 11:29:25,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:29:25,763 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;@160d0416, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:29:25,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-08-30 11:29:25,766 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:29:25,767 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:29:25,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:25,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:29:25,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:25,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 44578, now seen corresponding path program 1 times [2023-08-30 11:29:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400785082] [2023-08-30 11:29:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:26,109 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 11:29:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:26,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400785082] [2023-08-30 11:29:26,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400785082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:26,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:26,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:29:26,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221092182] [2023-08-30 11:29:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:29:26,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 11:29:26,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:26,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:26,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 11:29:26,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:28,308 INFO L130 PetriNetUnfolder]: 12771/18109 cut-off events. [2023-08-30 11:29:28,309 INFO L131 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2023-08-30 11:29:28,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36931 conditions, 18109 events. 12771/18109 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 105451 event pairs, 11314 based on Foata normal form. 0/7489 useless extension candidates. Maximal degree in co-relation 17050. Up to 9059 conditions per place. [2023-08-30 11:29:28,432 INFO L137 encePairwiseOnDemand]: 573/594 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-08-30 11:29:28,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 434 flow [2023-08-30 11:29:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-30 11:29:28,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775533108866442 [2023-08-30 11:29:28,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-30 11:29:28,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-30 11:29:28,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:28,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-30 11:29:28,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:28,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:28,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:28,466 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 141 flow. Second operand 3 states and 851 transitions. [2023-08-30 11:29:28,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 434 flow [2023-08-30 11:29:28,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 416 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:29:28,485 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 170 flow [2023-08-30 11:29:28,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-30 11:29:28,490 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -8 predicate places. [2023-08-30 11:29:28,490 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 170 flow [2023-08-30 11:29:28,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:28,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:28,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:29:28,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:29:28,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:28,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1383313, now seen corresponding path program 1 times [2023-08-30 11:29:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876496048] [2023-08-30 11:29:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:28,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:28,557 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 11:29:28,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876496048] [2023-08-30 11:29:28,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876496048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197842168] [2023-08-30 11:29:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:28,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:28,561 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 11:29:28,574 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 11:29:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:28,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:29:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:28,758 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 11:29:28,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:29:28,773 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 11:29:28,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197842168] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:29:28,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:29:28,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:29:28,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952753619] [2023-08-30 11:29:28,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:29:28,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:29:28,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:28,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:29:28,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:29:28,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 11:29:28,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:28,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:28,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 11:29:28,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:32,958 INFO L130 PetriNetUnfolder]: 31935/45271 cut-off events. [2023-08-30 11:29:32,958 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2023-08-30 11:29:33,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91759 conditions, 45271 events. 31935/45271 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 2241. Compared 290766 event pairs, 28285 based on Foata normal form. 0/18736 useless extension candidates. Maximal degree in co-relation 73323. Up to 9057 conditions per place. [2023-08-30 11:29:33,207 INFO L137 encePairwiseOnDemand]: 582/594 looper letters, 218 selfloop transitions, 33 changer transitions 0/251 dead transitions. [2023-08-30 11:29:33,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 251 transitions, 1140 flow [2023-08-30 11:29:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:29:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:29:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1954 transitions. [2023-08-30 11:29:33,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46993746993746993 [2023-08-30 11:29:33,213 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1954 transitions. [2023-08-30 11:29:33,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1954 transitions. [2023-08-30 11:29:33,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:33,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1954 transitions. [2023-08-30 11:29:33,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:33,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 594.0) internal successors, (4752), 8 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:33,226 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 594.0) internal successors, (4752), 8 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:33,226 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 170 flow. Second operand 7 states and 1954 transitions. [2023-08-30 11:29:33,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 251 transitions, 1140 flow [2023-08-30 11:29:33,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 251 transitions, 1116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:29:33,233 INFO L231 Difference]: Finished difference. Result has 64 places, 83 transitions, 377 flow [2023-08-30 11:29:33,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=64, PETRI_TRANSITIONS=83} [2023-08-30 11:29:33,234 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-08-30 11:29:33,234 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 83 transitions, 377 flow [2023-08-30 11:29:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.14285714285714) internal successors, (1702), 7 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:33,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:33,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:29:33,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:29:33,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:33,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:33,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash 42884099, now seen corresponding path program 1 times [2023-08-30 11:29:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:33,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346788935] [2023-08-30 11:29:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:33,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:29:33,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346788935] [2023-08-30 11:29:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346788935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:33,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:29:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129289179] [2023-08-30 11:29:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:29:33,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 11:29:33,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 83 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:33,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:33,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 11:29:33,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:36,831 INFO L130 PetriNetUnfolder]: 31926/45259 cut-off events. [2023-08-30 11:29:36,832 INFO L131 PetriNetUnfolder]: For 455/455 co-relation queries the response was YES. [2023-08-30 11:29:36,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91762 conditions, 45259 events. 31926/45259 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 293593 event pairs, 28285 based on Foata normal form. 2/18737 useless extension candidates. Maximal degree in co-relation 55029. Up to 45259 conditions per place. [2023-08-30 11:29:37,073 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 70 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-30 11:29:37,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 438 flow [2023-08-30 11:29:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-08-30 11:29:37,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2023-08-30 11:29:37,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-08-30 11:29:37,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-08-30 11:29:37,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:37,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-08-30 11:29:37,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:37,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:37,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:37,083 INFO L175 Difference]: Start difference. First operand has 64 places, 83 transitions, 377 flow. Second operand 3 states and 780 transitions. [2023-08-30 11:29:37,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 438 flow [2023-08-30 11:29:37,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 408 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:37,087 INFO L231 Difference]: Finished difference. Result has 61 places, 71 transitions, 268 flow [2023-08-30 11:29:37,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=61, PETRI_TRANSITIONS=71} [2023-08-30 11:29:37,088 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 11:29:37,089 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 268 flow [2023-08-30 11:29:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:37,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:37,089 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:29:37,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:29:37,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:37,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1738010142, now seen corresponding path program 2 times [2023-08-30 11:29:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007990584] [2023-08-30 11:29:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:37,383 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 11:29:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007990584] [2023-08-30 11:29:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007990584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165554394] [2023-08-30 11:29:37,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:29:37,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:37,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:37,390 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 11:29:37,413 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 11:29:37,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:29:37,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:29:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:29:37,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:37,514 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 11:29:37,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:29:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165554394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:37,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:29:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:29:37,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982363137] [2023-08-30 11:29:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:37,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:37,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:37,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:29:37,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 594 [2023-08-30 11:29:37,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:37,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:37,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 594 [2023-08-30 11:29:37,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:40,727 INFO L130 PetriNetUnfolder]: 31926/45258 cut-off events. [2023-08-30 11:29:40,727 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2023-08-30 11:29:40,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91740 conditions, 45258 events. 31926/45258 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 293545 event pairs, 28285 based on Foata normal form. 1/18737 useless extension candidates. Maximal degree in co-relation 91728. Up to 45253 conditions per place. [2023-08-30 11:29:40,916 INFO L137 encePairwiseOnDemand]: 591/594 looper letters, 64 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-30 11:29:40,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 398 flow [2023-08-30 11:29:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:29:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:29:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 786 transitions. [2023-08-30 11:29:40,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2023-08-30 11:29:40,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 786 transitions. [2023-08-30 11:29:40,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 786 transitions. [2023-08-30 11:29:40,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:40,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 786 transitions. [2023-08-30 11:29:40,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:40,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:40,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:40,928 INFO L175 Difference]: Start difference. First operand has 61 places, 71 transitions, 268 flow. Second operand 3 states and 786 transitions. [2023-08-30 11:29:40,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 398 flow [2023-08-30 11:29:40,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:40,931 INFO L231 Difference]: Finished difference. Result has 61 places, 70 transitions, 269 flow [2023-08-30 11:29:40,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2023-08-30 11:29:40,932 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2023-08-30 11:29:40,932 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 269 flow [2023-08-30 11:29:40,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:40,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:40,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:40,944 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 11:29:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:29:41,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:41,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1514382284, now seen corresponding path program 1 times [2023-08-30 11:29:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513627752] [2023-08-30 11:29:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:41,260 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 11:29:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:41,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513627752] [2023-08-30 11:29:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513627752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:29:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:29:41,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001354368] [2023-08-30 11:29:41,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:29:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:29:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:29:41,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-08-30 11:29:41,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:41,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:41,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-08-30 11:29:41,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:45,079 INFO L130 PetriNetUnfolder]: 32586/46395 cut-off events. [2023-08-30 11:29:45,079 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-08-30 11:29:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94111 conditions, 46395 events. 32586/46395 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 302770 event pairs, 28900 based on Foata normal form. 450/20043 useless extension candidates. Maximal degree in co-relation 94098. Up to 45257 conditions per place. [2023-08-30 11:29:45,258 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 102 selfloop transitions, 3 changer transitions 1/106 dead transitions. [2023-08-30 11:29:45,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 628 flow [2023-08-30 11:29:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:29:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:29:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1030 transitions. [2023-08-30 11:29:45,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335016835016835 [2023-08-30 11:29:45,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1030 transitions. [2023-08-30 11:29:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1030 transitions. [2023-08-30 11:29:45,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:45,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1030 transitions. [2023-08-30 11:29:45,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:45,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:45,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:45,270 INFO L175 Difference]: Start difference. First operand has 61 places, 70 transitions, 269 flow. Second operand 4 states and 1030 transitions. [2023-08-30 11:29:45,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 628 flow [2023-08-30 11:29:45,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:29:45,274 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 276 flow [2023-08-30 11:29:45,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-08-30 11:29:45,274 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-08-30 11:29:45,275 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 276 flow [2023-08-30 11:29:45,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:45,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:45,276 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:29:45,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:29:45,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:45,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1536134945, now seen corresponding path program 1 times [2023-08-30 11:29:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:45,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132882053] [2023-08-30 11:29:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:45,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:45,352 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 11:29:45,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:45,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132882053] [2023-08-30 11:29:45,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132882053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:45,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666729776] [2023-08-30 11:29:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:45,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:45,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:45,357 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 11:29:45,365 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 11:29:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:45,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:29:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:45,480 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 11:29:45,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:29:45,535 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 11:29:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666729776] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:29:45,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:29:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:29:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534914764] [2023-08-30 11:29:45,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:29:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:29:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:29:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:29:45,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 594 [2023-08-30 11:29:45,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 243.15384615384616) internal successors, (3161), 13 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:45,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:45,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 594 [2023-08-30 11:29:45,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:29:53,819 INFO L130 PetriNetUnfolder]: 71688/102063 cut-off events. [2023-08-30 11:29:53,819 INFO L131 PetriNetUnfolder]: For 6310/6310 co-relation queries the response was YES. [2023-08-30 11:29:54,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222513 conditions, 102063 events. 71688/102063 cut-off events. For 6310/6310 co-relation queries the response was YES. Maximal size of possible extension queue 3008. Compared 700841 event pairs, 63580 based on Foata normal form. 24/43106 useless extension candidates. Maximal degree in co-relation 222499. Up to 15533 conditions per place. [2023-08-30 11:29:54,453 INFO L137 encePairwiseOnDemand]: 586/594 looper letters, 469 selfloop transitions, 51 changer transitions 0/520 dead transitions. [2023-08-30 11:29:54,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 520 transitions, 2504 flow [2023-08-30 11:29:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:29:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:29:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3436 transitions. [2023-08-30 11:29:54,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820426487093154 [2023-08-30 11:29:54,463 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3436 transitions. [2023-08-30 11:29:54,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3436 transitions. [2023-08-30 11:29:54,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:29:54,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3436 transitions. [2023-08-30 11:29:54,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 286.3333333333333) internal successors, (3436), 12 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:54,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:54,483 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 594.0) internal successors, (7722), 13 states have internal predecessors, (7722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:54,483 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 276 flow. Second operand 12 states and 3436 transitions. [2023-08-30 11:29:54,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 520 transitions, 2504 flow [2023-08-30 11:29:54,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 520 transitions, 2498 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:29:54,493 INFO L231 Difference]: Finished difference. Result has 79 places, 100 transitions, 618 flow [2023-08-30 11:29:54,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=79, PETRI_TRANSITIONS=100} [2023-08-30 11:29:54,494 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2023-08-30 11:29:54,494 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 100 transitions, 618 flow [2023-08-30 11:29:54,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.15384615384616) internal successors, (3161), 13 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:54,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:29:54,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:29:54,501 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 11:29:54,701 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 11:29:54,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:29:54,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:29:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1338899493, now seen corresponding path program 1 times [2023-08-30 11:29:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:29:54,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652672194] [2023-08-30 11:29:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:54,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:29:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:54,840 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 11:29:54,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:29:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652672194] [2023-08-30 11:29:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652672194] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:29:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617014215] [2023-08-30 11:29:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:29:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:29:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:29:54,841 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 11:29:54,843 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 11:29:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:29:54,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:29:54,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:29:54,951 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 11:29:54,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:29:54,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617014215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:29:54,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:29:54,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:29:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612211245] [2023-08-30 11:29:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:29:54,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:29:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:29:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:29:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:29:54,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-08-30 11:29:54,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 100 transitions, 618 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:29:54,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:29:54,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-08-30 11:29:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:00,783 INFO L130 PetriNetUnfolder]: 53978/77071 cut-off events. [2023-08-30 11:30:00,783 INFO L131 PetriNetUnfolder]: For 5535/5535 co-relation queries the response was YES. [2023-08-30 11:30:00,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163296 conditions, 77071 events. 53978/77071 cut-off events. For 5535/5535 co-relation queries the response was YES. Maximal size of possible extension queue 2472. Compared 515528 event pairs, 47256 based on Foata normal form. 0/34847 useless extension candidates. Maximal degree in co-relation 163275. Up to 77071 conditions per place. [2023-08-30 11:30:01,182 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-30 11:30:01,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 97 transitions, 800 flow [2023-08-30 11:30:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-30 11:30:01,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44725028058361394 [2023-08-30 11:30:01,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-30 11:30:01,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-30 11:30:01,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:01,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-30 11:30:01,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:01,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:01,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:01,191 INFO L175 Difference]: Start difference. First operand has 79 places, 100 transitions, 618 flow. Second operand 3 states and 797 transitions. [2023-08-30 11:30:01,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 97 transitions, 800 flow [2023-08-30 11:30:01,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 656 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-30 11:30:01,196 INFO L231 Difference]: Finished difference. Result has 73 places, 97 transitions, 464 flow [2023-08-30 11:30:01,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=97} [2023-08-30 11:30:01,197 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2023-08-30 11:30:01,197 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 97 transitions, 464 flow [2023-08-30 11:30:01,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:01,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:01,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:01,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:30:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:30:01,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:01,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1443791074, now seen corresponding path program 1 times [2023-08-30 11:30:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027261892] [2023-08-30 11:30:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:01,477 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 11:30:01,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027261892] [2023-08-30 11:30:01,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027261892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:01,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55988252] [2023-08-30 11:30:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:01,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:01,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:01,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:01,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-08-30 11:30:01,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 97 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:01,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:01,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-08-30 11:30:01,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:11,286 INFO L130 PetriNetUnfolder]: 90366/128859 cut-off events. [2023-08-30 11:30:11,287 INFO L131 PetriNetUnfolder]: For 6614/6614 co-relation queries the response was YES. [2023-08-30 11:30:11,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274083 conditions, 128859 events. 90366/128859 cut-off events. For 6614/6614 co-relation queries the response was YES. Maximal size of possible extension queue 4012. Compared 948209 event pairs, 46332 based on Foata normal form. 0/57950 useless extension candidates. Maximal degree in co-relation 274062. Up to 75598 conditions per place. [2023-08-30 11:30:11,975 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 129 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-30 11:30:11,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 131 transitions, 805 flow [2023-08-30 11:30:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-30 11:30:11,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657687991021324 [2023-08-30 11:30:11,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-30 11:30:11,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-30 11:30:11,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:11,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-30 11:30:11,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:11,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:11,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:11,984 INFO L175 Difference]: Start difference. First operand has 73 places, 97 transitions, 464 flow. Second operand 3 states and 830 transitions. [2023-08-30 11:30:11,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 131 transitions, 805 flow [2023-08-30 11:30:11,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:11,989 INFO L231 Difference]: Finished difference. Result has 75 places, 98 transitions, 477 flow [2023-08-30 11:30:11,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=75, PETRI_TRANSITIONS=98} [2023-08-30 11:30:11,990 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2023-08-30 11:30:11,990 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 98 transitions, 477 flow [2023-08-30 11:30:11,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:11,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:11,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:11,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:30:11,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:11,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1443791102, now seen corresponding path program 1 times [2023-08-30 11:30:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099507377] [2023-08-30 11:30:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:12,065 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 11:30:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099507377] [2023-08-30 11:30:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099507377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693915859] [2023-08-30 11:30:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:12,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 594 [2023-08-30 11:30:12,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 98 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:12,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:12,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 594 [2023-08-30 11:30:12,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:22,626 INFO L130 PetriNetUnfolder]: 96779/137054 cut-off events. [2023-08-30 11:30:22,626 INFO L131 PetriNetUnfolder]: For 24621/24621 co-relation queries the response was YES. [2023-08-30 11:30:23,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302937 conditions, 137054 events. 96779/137054 cut-off events. For 24621/24621 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 965282 event pairs, 27940 based on Foata normal form. 3212/66871 useless extension candidates. Maximal degree in co-relation 302915. Up to 111420 conditions per place. [2023-08-30 11:30:23,461 INFO L137 encePairwiseOnDemand]: 585/594 looper letters, 119 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2023-08-30 11:30:23,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 788 flow [2023-08-30 11:30:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-08-30 11:30:23,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590347923681257 [2023-08-30 11:30:23,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-08-30 11:30:23,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-08-30 11:30:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-08-30 11:30:23,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:23,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:23,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:23,470 INFO L175 Difference]: Start difference. First operand has 75 places, 98 transitions, 477 flow. Second operand 3 states and 818 transitions. [2023-08-30 11:30:23,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 788 flow [2023-08-30 11:30:23,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:23,515 INFO L231 Difference]: Finished difference. Result has 77 places, 102 transitions, 514 flow [2023-08-30 11:30:23,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=77, PETRI_TRANSITIONS=102} [2023-08-30 11:30:23,516 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2023-08-30 11:30:23,516 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 102 transitions, 514 flow [2023-08-30 11:30:23,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:23,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:23,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:23,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:30:23,517 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:23,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:23,518 INFO L85 PathProgramCache]: Analyzing trace with hash -237755367, now seen corresponding path program 1 times [2023-08-30 11:30:23,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:23,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704875100] [2023-08-30 11:30:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:23,584 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 11:30:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704875100] [2023-08-30 11:30:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704875100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:23,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:30:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616182932] [2023-08-30 11:30:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:30:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:30:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:30:23,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-08-30 11:30:23,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 102 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:23,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:23,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-08-30 11:30:23,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:33,918 INFO L130 PetriNetUnfolder]: 88876/125989 cut-off events. [2023-08-30 11:30:33,919 INFO L131 PetriNetUnfolder]: For 18217/18217 co-relation queries the response was YES. [2023-08-30 11:30:34,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309083 conditions, 125989 events. 88876/125989 cut-off events. For 18217/18217 co-relation queries the response was YES. Maximal size of possible extension queue 4101. Compared 896229 event pairs, 70614 based on Foata normal form. 100/58886 useless extension candidates. Maximal degree in co-relation 309059. Up to 124582 conditions per place. [2023-08-30 11:30:34,713 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 115 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2023-08-30 11:30:34,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 128 transitions, 836 flow [2023-08-30 11:30:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:30:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:30:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2023-08-30 11:30:34,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43308080808080807 [2023-08-30 11:30:34,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2023-08-30 11:30:34,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2023-08-30 11:30:34,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:34,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2023-08-30 11:30:34,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,723 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,723 INFO L175 Difference]: Start difference. First operand has 77 places, 102 transitions, 514 flow. Second operand 4 states and 1029 transitions. [2023-08-30 11:30:34,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 128 transitions, 836 flow [2023-08-30 11:30:34,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 128 transitions, 831 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:34,750 INFO L231 Difference]: Finished difference. Result has 81 places, 103 transitions, 567 flow [2023-08-30 11:30:34,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=567, PETRI_PLACES=81, PETRI_TRANSITIONS=103} [2023-08-30 11:30:34,751 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 16 predicate places. [2023-08-30 11:30:34,751 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 103 transitions, 567 flow [2023-08-30 11:30:34,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:34,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:30:34,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:34,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash -237755479, now seen corresponding path program 1 times [2023-08-30 11:30:34,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274092258] [2023-08-30 11:30:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:34,827 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 11:30:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:34,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274092258] [2023-08-30 11:30:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274092258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047593299] [2023-08-30 11:30:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:34,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 594 [2023-08-30 11:30:34,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 103 transitions, 567 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:34,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:34,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 594 [2023-08-30 11:30:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:44,512 INFO L130 PetriNetUnfolder]: 81402/115339 cut-off events. [2023-08-30 11:30:44,513 INFO L131 PetriNetUnfolder]: For 20417/20417 co-relation queries the response was YES. [2023-08-30 11:30:44,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293433 conditions, 115339 events. 81402/115339 cut-off events. For 20417/20417 co-relation queries the response was YES. Maximal size of possible extension queue 3558. Compared 797174 event pairs, 27538 based on Foata normal form. 1428/56730 useless extension candidates. Maximal degree in co-relation 293407. Up to 109747 conditions per place. [2023-08-30 11:30:45,313 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 115 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2023-08-30 11:30:45,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 852 flow [2023-08-30 11:30:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:30:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:30:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-08-30 11:30:45,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2023-08-30 11:30:45,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-08-30 11:30:45,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-08-30 11:30:45,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:45,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-08-30 11:30:45,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:45,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:45,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:45,319 INFO L175 Difference]: Start difference. First operand has 81 places, 103 transitions, 567 flow. Second operand 3 states and 804 transitions. [2023-08-30 11:30:45,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 852 flow [2023-08-30 11:30:45,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 838 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:45,490 INFO L231 Difference]: Finished difference. Result has 83 places, 107 transitions, 594 flow [2023-08-30 11:30:45,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=594, PETRI_PLACES=83, PETRI_TRANSITIONS=107} [2023-08-30 11:30:45,491 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2023-08-30 11:30:45,491 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 107 transitions, 594 flow [2023-08-30 11:30:45,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:45,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:45,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:45,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 11:30:45,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:45,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -142394446, now seen corresponding path program 1 times [2023-08-30 11:30:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60024902] [2023-08-30 11:30:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:45,581 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 11:30:45,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:45,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60024902] [2023-08-30 11:30:45,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60024902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:45,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:45,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:30:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244635635] [2023-08-30 11:30:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:45,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:30:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:30:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:30:45,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 594 [2023-08-30 11:30:45,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 107 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:45,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:45,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 594 [2023-08-30 11:30:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:30:55,767 INFO L130 PetriNetUnfolder]: 83052/118355 cut-off events. [2023-08-30 11:30:55,767 INFO L131 PetriNetUnfolder]: For 30959/30959 co-relation queries the response was YES. [2023-08-30 11:30:56,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337193 conditions, 118355 events. 83052/118355 cut-off events. For 30959/30959 co-relation queries the response was YES. Maximal size of possible extension queue 3620. Compared 829266 event pairs, 54986 based on Foata normal form. 616/62910 useless extension candidates. Maximal degree in co-relation 337165. Up to 115327 conditions per place. [2023-08-30 11:30:56,625 INFO L137 encePairwiseOnDemand]: 584/594 looper letters, 106 selfloop transitions, 13 changer transitions 16/135 dead transitions. [2023-08-30 11:30:56,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1002 flow [2023-08-30 11:30:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:30:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:30:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1021 transitions. [2023-08-30 11:30:56,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297138047138047 [2023-08-30 11:30:56,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1021 transitions. [2023-08-30 11:30:56,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1021 transitions. [2023-08-30 11:30:56,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:30:56,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1021 transitions. [2023-08-30 11:30:56,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.25) internal successors, (1021), 4 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:56,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:56,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:56,632 INFO L175 Difference]: Start difference. First operand has 83 places, 107 transitions, 594 flow. Second operand 4 states and 1021 transitions. [2023-08-30 11:30:56,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1002 flow [2023-08-30 11:30:56,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:30:56,774 INFO L231 Difference]: Finished difference. Result has 86 places, 107 transitions, 630 flow [2023-08-30 11:30:56,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=630, PETRI_PLACES=86, PETRI_TRANSITIONS=107} [2023-08-30 11:30:56,775 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2023-08-30 11:30:56,775 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 107 transitions, 630 flow [2023-08-30 11:30:56,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:56,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:30:56,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:30:56,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:30:56,776 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:30:56,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:30:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash 331490807, now seen corresponding path program 1 times [2023-08-30 11:30:56,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:30:56,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38532282] [2023-08-30 11:30:56,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:30:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:30:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:30:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:30:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:30:56,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38532282] [2023-08-30 11:30:56,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38532282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:30:56,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:30:56,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:30:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462065022] [2023-08-30 11:30:56,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:30:56,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:30:56,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:30:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:30:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:30:56,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 594 [2023-08-30 11:30:56,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 107 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:30:56,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:30:56,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 594 [2023-08-30 11:30:56,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:08,052 INFO L130 PetriNetUnfolder]: 88398/127589 cut-off events. [2023-08-30 11:31:08,052 INFO L131 PetriNetUnfolder]: For 37135/37135 co-relation queries the response was YES. [2023-08-30 11:31:08,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376827 conditions, 127589 events. 88398/127589 cut-off events. For 37135/37135 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 934696 event pairs, 59254 based on Foata normal form. 0/67577 useless extension candidates. Maximal degree in co-relation 376798. Up to 111228 conditions per place. [2023-08-30 11:31:08,949 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 136 selfloop transitions, 3 changer transitions 0/139 dead transitions. [2023-08-30 11:31:08,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 139 transitions, 1041 flow [2023-08-30 11:31:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-08-30 11:31:08,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46352413019079686 [2023-08-30 11:31:08,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-08-30 11:31:08,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-08-30 11:31:08,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:08,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-08-30 11:31:08,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:08,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:08,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:08,957 INFO L175 Difference]: Start difference. First operand has 86 places, 107 transitions, 630 flow. Second operand 3 states and 826 transitions. [2023-08-30 11:31:08,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 139 transitions, 1041 flow [2023-08-30 11:31:09,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 1001 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 11:31:09,137 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 590 flow [2023-08-30 11:31:09,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2023-08-30 11:31:09,137 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2023-08-30 11:31:09,137 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 590 flow [2023-08-30 11:31:09,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:09,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:09,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:31:09,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:31:09,138 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:31:09,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash 331490912, now seen corresponding path program 1 times [2023-08-30 11:31:09,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:09,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359497344] [2023-08-30 11:31:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:09,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:31:09,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:09,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359497344] [2023-08-30 11:31:09,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359497344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:31:09,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:31:09,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:31:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967912486] [2023-08-30 11:31:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:31:09,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:31:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:31:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:31:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:31:09,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 594 [2023-08-30 11:31:09,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:09,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:31:09,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 594 [2023-08-30 11:31:09,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:31:18,009 INFO L130 PetriNetUnfolder]: 67306/99537 cut-off events. [2023-08-30 11:31:18,009 INFO L131 PetriNetUnfolder]: For 29098/29098 co-relation queries the response was YES. [2023-08-30 11:31:18,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293658 conditions, 99537 events. 67306/99537 cut-off events. For 29098/29098 co-relation queries the response was YES. Maximal size of possible extension queue 3487. Compared 738861 event pairs, 33616 based on Foata normal form. 264/51828 useless extension candidates. Maximal degree in co-relation 293630. Up to 96957 conditions per place. [2023-08-30 11:31:18,722 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-30 11:31:18,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 115 transitions, 847 flow [2023-08-30 11:31:18,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:31:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:31:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2023-08-30 11:31:18,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2023-08-30 11:31:18,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 798 transitions. [2023-08-30 11:31:18,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 798 transitions. [2023-08-30 11:31:18,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:31:18,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 798 transitions. [2023-08-30 11:31:18,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.0) internal successors, (798), 3 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,727 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 590 flow. Second operand 3 states and 798 transitions. [2023-08-30 11:31:18,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 115 transitions, 847 flow [2023-08-30 11:31:18,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 115 transitions, 843 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:31:18,809 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 610 flow [2023-08-30 11:31:18,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2023-08-30 11:31:18,809 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2023-08-30 11:31:18,810 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 610 flow [2023-08-30 11:31:18,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:31:18,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:31:18,810 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 11:31:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 11:31:18,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-08-30 11:31:18,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:31:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1121023009, now seen corresponding path program 2 times [2023-08-30 11:31:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:31:18,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300559436] [2023-08-30 11:31:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:31:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:31:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:31:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:31:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:31:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300559436] [2023-08-30 11:31:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300559436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:31:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860547325] [2023-08-30 11:31:18,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:31:18,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:31:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:31:18,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:31:18,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process