./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/triangular-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/pthread/triangular-1.i -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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:47:40,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:47:40,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:47:40,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:47:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:47:40,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:47:40,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:47:40,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:47:40,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:47:40,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:47:40,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:47:40,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:47:40,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:47:40,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:47:40,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:47:40,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:47:40,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:47:40,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:47:40,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:47:40,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:47:40,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:47:40,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:47:40,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:47:40,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:47:40,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:47:40,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:47:40,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:47:40,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:47:40,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:47:40,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:47:40,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:47:40,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:47:40,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:47:40,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:47:40,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:47:40,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:47:40,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:47:40,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:47:40,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:47:40,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:47:40,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:47:40,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:47:40,542 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:47:40,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:47:40,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:47:40,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:47:40,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:47:40,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:47:40,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:47:40,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:47:40,545 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:47:40,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:47:40,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:47:40,547 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:47:40,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:47:40,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:47:40,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:47:40,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:47:40,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:47:40,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:47:40,548 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:47:40,548 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:47:40,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:47:40,548 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:47:40,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:47:40,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:47:40,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:47:40,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:47:40,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:47:40,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:47:40,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:47:40,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:47:40,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:47:40,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:47:40,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:47:40,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:47:40,551 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:47:40,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:47:40,551 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:47:40,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:47:40,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:47:40,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:47:40,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:47:40,857 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:47:40,859 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:47:40,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-08-30 12:47:41,987 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:47:42,274 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:47:42,274 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-08-30 12:47:42,291 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89089607/9a7608fa9f2c459e9b5a49c562cc3453/FLAG36e7e475a [2023-08-30 12:47:42,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89089607/9a7608fa9f2c459e9b5a49c562cc3453 [2023-08-30 12:47:42,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:47:42,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:47:42,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:47:42,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:47:42,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:47:42,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3932f103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42, skipping insertion in model container [2023-08-30 12:47:42,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:47:42,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:47:42,591 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2023-08-30 12:47:42,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:47:42,602 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:47:42,656 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2023-08-30 12:47:42,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:47:42,708 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:47:42,708 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 12:47:42,714 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:47:42,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42 WrapperNode [2023-08-30 12:47:42,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:47:42,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:47:42,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:47:42,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:47:42,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,779 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-30 12:47:42,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:47:42,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:47:42,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:47:42,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:47:42,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:47:42,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:47:42,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:47:42,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:47:42,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (1/1) ... [2023-08-30 12:47:42,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:47:42,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:42,841 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 12:47:42,857 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 12:47:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:47:42,877 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:47:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:47:42,877 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:47:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 12:47:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:47:42,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:47:42,880 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 12:47:43,028 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:47:43,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:47:43,165 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:47:43,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:47:43,187 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:47:43,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:47:43 BoogieIcfgContainer [2023-08-30 12:47:43,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:47:43,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:47:43,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:47:43,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:47:43,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:47:42" (1/3) ... [2023-08-30 12:47:43,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d333b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:47:43, skipping insertion in model container [2023-08-30 12:47:43,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:47:42" (2/3) ... [2023-08-30 12:47:43,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d333b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:47:43, skipping insertion in model container [2023-08-30 12:47:43,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:47:43" (3/3) ... [2023-08-30 12:47:43,196 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-08-30 12:47:43,203 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:47:43,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:47:43,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:47:43,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:47:43,266 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 12:47:43,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 164 flow [2023-08-30 12:47:43,338 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-08-30 12:47:43,341 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:47:43,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-30 12:47:43,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 77 transitions, 164 flow [2023-08-30 12:47:43,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 75 transitions, 156 flow [2023-08-30 12:47:43,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:47:43,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 75 transitions, 156 flow [2023-08-30 12:47:43,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 75 transitions, 156 flow [2023-08-30 12:47:43,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 156 flow [2023-08-30 12:47:43,412 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2023-08-30 12:47:43,412 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:47:43,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 5/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-30 12:47:43,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 1802 [2023-08-30 12:47:45,512 INFO L134 LiptonReduction]: Checked pairs total: 1843 [2023-08-30 12:47:45,512 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-30 12:47:45,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:47:45,530 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;@3e0abfed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:47:45,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:47:45,533 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 12:47:45,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 12:47:45,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:45,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:47:45,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:45,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 9842129, now seen corresponding path program 1 times [2023-08-30 12:47:45,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521676508] [2023-08-30 12:47:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:45,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:45,730 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 12:47:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521676508] [2023-08-30 12:47:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521676508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:45,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078435403] [2023-08-30 12:47:45,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:45,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:45,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:47:45,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:45,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:45,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:47:45,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:45,865 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2023-08-30 12:47:45,865 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 12:47:45,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1808 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2023-08-30 12:47:45,870 INFO L137 encePairwiseOnDemand]: 140/148 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-08-30 12:47:45,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2023-08-30 12:47:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-08-30 12:47:45,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-08-30 12:47:45,882 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-08-30 12:47:45,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-08-30 12:47:45,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:45,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-08-30 12:47:45,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:45,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:45,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:45,894 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 232 transitions. [2023-08-30 12:47:45,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2023-08-30 12:47:45,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:47:45,898 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2023-08-30 12:47:45,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-08-30 12:47:45,902 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2023-08-30 12:47:45,903 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2023-08-30 12:47:45,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:45,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:45,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:47:45,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:47:45,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:45,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:45,905 INFO L85 PathProgramCache]: Analyzing trace with hash 9842130, now seen corresponding path program 1 times [2023-08-30 12:47:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424183618] [2023-08-30 12:47:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:45,959 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 12:47:45,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:45,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424183618] [2023-08-30 12:47:45,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424183618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:45,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:45,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:45,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597140225] [2023-08-30 12:47:45,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:45,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:47:45,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:45,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:45,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:47:45,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:46,044 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2023-08-30 12:47:46,044 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 12:47:46,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1878 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2023-08-30 12:47:46,048 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-30 12:47:46,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2023-08-30 12:47:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-30 12:47:46,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-08-30 12:47:46,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-30 12:47:46,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-30 12:47:46,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:46,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-30 12:47:46,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,054 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 225 transitions. [2023-08-30 12:47:46,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2023-08-30 12:47:46,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:47:46,056 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2023-08-30 12:47:46,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2023-08-30 12:47:46,057 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-30 12:47:46,057 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2023-08-30 12:47:46,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:46,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 12:47:46,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:47:46,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:46,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash 9842166, now seen corresponding path program 1 times [2023-08-30 12:47:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:46,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212360034] [2023-08-30 12:47:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:46,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:46,123 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 12:47:46,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212360034] [2023-08-30 12:47:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212360034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463534850] [2023-08-30 12:47:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:46,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-08-30 12:47:46,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:46,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-08-30 12:47:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:46,226 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2023-08-30 12:47:46,226 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 12:47:46,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3177 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2023-08-30 12:47:46,231 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-30 12:47:46,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2023-08-30 12:47:46,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-30 12:47:46,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-08-30 12:47:46,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-30 12:47:46,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-30 12:47:46,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:46,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-30 12:47:46,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,236 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 225 transitions. [2023-08-30 12:47:46,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2023-08-30 12:47:46,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:46,238 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2023-08-30 12:47:46,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-08-30 12:47:46,239 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-30 12:47:46,239 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2023-08-30 12:47:46,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:46,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 12:47:46,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:47:46,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:46,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:46,240 INFO L85 PathProgramCache]: Analyzing trace with hash 305107525, now seen corresponding path program 1 times [2023-08-30 12:47:46,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:46,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442899182] [2023-08-30 12:47:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:46,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:46,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442899182] [2023-08-30 12:47:46,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442899182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914083511] [2023-08-30 12:47:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:46,289 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 12:47:46,304 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 12:47:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:47:46,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:46,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:47:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914083511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:46,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:47:46,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:47:46,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994454335] [2023-08-30 12:47:46,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:46,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:47:46,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-08-30 12:47:46,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:46,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-08-30 12:47:46,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:46,512 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2023-08-30 12:47:46,513 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-08-30 12:47:46,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2863 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 336 conditions per place. [2023-08-30 12:47:46,517 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 12:47:46,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2023-08-30 12:47:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:47:46,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:47:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-08-30 12:47:46,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016891891891891 [2023-08-30 12:47:46,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-08-30 12:47:46,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-08-30 12:47:46,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:46,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-08-30 12:47:46,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,537 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 297 transitions. [2023-08-30 12:47:46,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2023-08-30 12:47:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:46,539 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2023-08-30 12:47:46,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-30 12:47:46,540 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-30 12:47:46,540 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2023-08-30 12:47:46,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:46,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:46,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:46,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:46,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:46,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:46,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1174384726, now seen corresponding path program 1 times [2023-08-30 12:47:46,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:46,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533659881] [2023-08-30 12:47:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:46,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533659881] [2023-08-30 12:47:46,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533659881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:46,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291385056] [2023-08-30 12:47:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:46,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:46,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:46,817 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 12:47:46,820 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 12:47:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:46,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:47:46,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:46,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:47:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291385056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:46,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:47:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 12:47:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158003435] [2023-08-30 12:47:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:47:46,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 148 [2023-08-30 12:47:46,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:46,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:46,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 148 [2023-08-30 12:47:46,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:46,993 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2023-08-30 12:47:46,994 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-08-30 12:47:46,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 514 events. 301/514 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2134 event pairs, 48 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1374. Up to 380 conditions per place. [2023-08-30 12:47:46,997 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-08-30 12:47:46,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2023-08-30 12:47:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 12:47:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 12:47:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-08-30 12:47:46,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-30 12:47:46,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-08-30 12:47:47,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-08-30 12:47:47,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-08-30 12:47:47,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,002 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,003 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 288 transitions. [2023-08-30 12:47:47,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2023-08-30 12:47:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:47:47,004 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2023-08-30 12:47:47,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-30 12:47:47,005 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-08-30 12:47:47,006 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2023-08-30 12:47:47,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:47,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:47:47,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 12:47:47,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:47,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:47,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 869167325, now seen corresponding path program 1 times [2023-08-30 12:47:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127027292] [2023-08-30 12:47:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:47,263 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 12:47:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:47,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127027292] [2023-08-30 12:47:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127027292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:47,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:47,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:47,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721065268] [2023-08-30 12:47:47,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:47,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:47,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:47:47,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:47,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:47:47,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:47,321 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2023-08-30 12:47:47,321 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-08-30 12:47:47,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 454 events. 259/454 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1942 event pairs, 103 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 1276. Up to 239 conditions per place. [2023-08-30 12:47:47,324 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-30 12:47:47,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2023-08-30 12:47:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-30 12:47:47,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-08-30 12:47:47,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-30 12:47:47,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-30 12:47:47,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-30 12:47:47,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,328 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 224 transitions. [2023-08-30 12:47:47,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2023-08-30 12:47:47,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:47,330 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2023-08-30 12:47:47,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-30 12:47:47,331 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2023-08-30 12:47:47,331 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2023-08-30 12:47:47,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:47,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 12:47:47,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 12:47:47,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:47,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash 869167324, now seen corresponding path program 1 times [2023-08-30 12:47:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083344943] [2023-08-30 12:47:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:47,357 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 12:47:47,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:47,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083344943] [2023-08-30 12:47:47,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083344943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:47,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:47,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 12:47:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241558594] [2023-08-30 12:47:47,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:47,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:47:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:47:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:47:47,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 148 [2023-08-30 12:47:47,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:47,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 148 [2023-08-30 12:47:47,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:47,424 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2023-08-30 12:47:47,424 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-08-30 12:47:47,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 426 events. 237/426 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1842 event pairs, 75 based on Foata normal form. 24/450 useless extension candidates. Maximal degree in co-relation 1358. Up to 263 conditions per place. [2023-08-30 12:47:47,427 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-08-30 12:47:47,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2023-08-30 12:47:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-08-30 12:47:47,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-08-30 12:47:47,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-08-30 12:47:47,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-08-30 12:47:47,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-08-30 12:47:47,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,431 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 223 transitions. [2023-08-30 12:47:47,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2023-08-30 12:47:47,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 12:47:47,433 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2023-08-30 12:47:47,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2023-08-30 12:47:47,434 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2023-08-30 12:47:47,434 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2023-08-30 12:47:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:47,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:47:47,435 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:47,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877637, now seen corresponding path program 1 times [2023-08-30 12:47:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:47,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085638035] [2023-08-30 12:47:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:47,466 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 12:47:47,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085638035] [2023-08-30 12:47:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085638035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:47,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:47,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636585170] [2023-08-30 12:47:47,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:47,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:47,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:47,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:47,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:47,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:47,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:47,551 INFO L130 PetriNetUnfolder]: 289/502 cut-off events. [2023-08-30 12:47:47,551 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2023-08-30 12:47:47,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 502 events. 289/502 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2096 event pairs, 65 based on Foata normal form. 24/526 useless extension candidates. Maximal degree in co-relation 1631. Up to 188 conditions per place. [2023-08-30 12:47:47,554 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-08-30 12:47:47,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 331 flow [2023-08-30 12:47:47,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:47:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:47:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-08-30 12:47:47,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2023-08-30 12:47:47,556 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-08-30 12:47:47,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-08-30 12:47:47,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-08-30 12:47:47,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,559 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 356 transitions. [2023-08-30 12:47:47,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 331 flow [2023-08-30 12:47:47,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:47,562 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 219 flow [2023-08-30 12:47:47,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-30 12:47:47,566 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2023-08-30 12:47:47,567 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 219 flow [2023-08-30 12:47:47,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:47,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 12:47:47,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:47,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2077921346, now seen corresponding path program 1 times [2023-08-30 12:47:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178498901] [2023-08-30 12:47:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:47,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:47,630 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 12:47:47,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178498901] [2023-08-30 12:47:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178498901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:47,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:47,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840757181] [2023-08-30 12:47:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:47,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:47,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:47,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:47,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:47,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:47,730 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2023-08-30 12:47:47,730 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2023-08-30 12:47:47,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 532 events. 301/532 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2318 event pairs, 61 based on Foata normal form. 48/580 useless extension candidates. Maximal degree in co-relation 1966. Up to 216 conditions per place. [2023-08-30 12:47:47,734 INFO L137 encePairwiseOnDemand]: 141/148 looper letters, 43 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2023-08-30 12:47:47,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 438 flow [2023-08-30 12:47:47,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:47:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:47:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-08-30 12:47:47,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2023-08-30 12:47:47,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-08-30 12:47:47,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-08-30 12:47:47,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-08-30 12:47:47,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,739 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 219 flow. Second operand 5 states and 358 transitions. [2023-08-30 12:47:47,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 438 flow [2023-08-30 12:47:47,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 411 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 12:47:47,743 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 281 flow [2023-08-30 12:47:47,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-08-30 12:47:47,744 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-08-30 12:47:47,744 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 281 flow [2023-08-30 12:47:47,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:47,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:47,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:47:47,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:47,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877425, now seen corresponding path program 1 times [2023-08-30 12:47:47,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:47,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162440902] [2023-08-30 12:47:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:47,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:47,782 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 12:47:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:47,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162440902] [2023-08-30 12:47:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162440902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:47,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:47,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486786817] [2023-08-30 12:47:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:47,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:47,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:47,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:47,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:47,886 INFO L130 PetriNetUnfolder]: 353/608 cut-off events. [2023-08-30 12:47:47,887 INFO L131 PetriNetUnfolder]: For 1644/1644 co-relation queries the response was YES. [2023-08-30 12:47:47,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 608 events. 353/608 cut-off events. For 1644/1644 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2647 event pairs, 63 based on Foata normal form. 24/632 useless extension candidates. Maximal degree in co-relation 2401. Up to 351 conditions per place. [2023-08-30 12:47:47,891 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 46 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2023-08-30 12:47:47,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 536 flow [2023-08-30 12:47:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:47:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:47:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-08-30 12:47:47,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-30 12:47:47,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-08-30 12:47:47,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-08-30 12:47:47,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-08-30 12:47:47,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,896 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 281 flow. Second operand 5 states and 360 transitions. [2023-08-30 12:47:47,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 536 flow [2023-08-30 12:47:47,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 532 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-30 12:47:47,900 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 387 flow [2023-08-30 12:47:47,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-08-30 12:47:47,901 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2023-08-30 12:47:47,901 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 387 flow [2023-08-30 12:47:47,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:47,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:47:47,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:47,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:47,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2077877424, now seen corresponding path program 1 times [2023-08-30 12:47:47,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:47,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325082195] [2023-08-30 12:47:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:47,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:47,932 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 12:47:47,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:47,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325082195] [2023-08-30 12:47:47,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325082195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:47,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:47:47,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:47:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930065893] [2023-08-30 12:47:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:47,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 12:47:47,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:47,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 12:47:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 12:47:47,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:47,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:47,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:47,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:47,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:47,993 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2023-08-30 12:47:47,993 INFO L131 PetriNetUnfolder]: For 1945/1945 co-relation queries the response was YES. [2023-08-30 12:47:47,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 432 events. 252/432 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1627 event pairs, 178 based on Foata normal form. 48/480 useless extension candidates. Maximal degree in co-relation 1798. Up to 432 conditions per place. [2023-08-30 12:47:47,996 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 12:47:47,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 310 flow [2023-08-30 12:47:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:47:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:47:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-30 12:47:47,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-08-30 12:47:47,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-30 12:47:47,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-30 12:47:47,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:47,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-30 12:47:47,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,000 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 387 flow. Second operand 3 states and 205 transitions. [2023-08-30 12:47:48,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 310 flow [2023-08-30 12:47:48,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 263 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-30 12:47:48,004 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 209 flow [2023-08-30 12:47:48,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2023-08-30 12:47:48,005 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2023-08-30 12:47:48,005 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 209 flow [2023-08-30 12:47:48,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:48,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:48,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:47:48,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:48,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -8946286, now seen corresponding path program 1 times [2023-08-30 12:47:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:48,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326988412] [2023-08-30 12:47:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:48,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:48,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:48,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326988412] [2023-08-30 12:47:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326988412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:48,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913365233] [2023-08-30 12:47:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:48,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:48,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:48,043 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 12:47:48,072 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 12:47:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:48,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:47:48,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:48,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:48,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913365233] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:48,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 12:47:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174163895] [2023-08-30 12:47:48,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:48,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 12:47:48,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 12:47:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 12:47:48,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:48,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 209 flow. Second operand has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:48,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:48,302 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2023-08-30 12:47:48,302 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2023-08-30 12:47:48,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 622 events. 361/622 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2480 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2298. Up to 203 conditions per place. [2023-08-30 12:47:48,306 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2023-08-30 12:47:48,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 621 flow [2023-08-30 12:47:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 12:47:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 12:47:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 630 transitions. [2023-08-30 12:47:48,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2023-08-30 12:47:48,308 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 630 transitions. [2023-08-30 12:47:48,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 630 transitions. [2023-08-30 12:47:48,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:48,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 630 transitions. [2023-08-30 12:47:48,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,313 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 209 flow. Second operand 9 states and 630 transitions. [2023-08-30 12:47:48,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 621 flow [2023-08-30 12:47:48,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:47:48,317 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 474 flow [2023-08-30 12:47:48,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-08-30 12:47:48,318 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 34 predicate places. [2023-08-30 12:47:48,318 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 474 flow [2023-08-30 12:47:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:48,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:48,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:48,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:48,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:48,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1315827018, now seen corresponding path program 1 times [2023-08-30 12:47:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245258626] [2023-08-30 12:47:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245258626] [2023-08-30 12:47:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245258626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148218243] [2023-08-30 12:47:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:48,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:48,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:48,605 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 12:47:48,633 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 12:47:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:48,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 12:47:48,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:48,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:48,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148218243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:48,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:48,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 12:47:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515578679] [2023-08-30 12:47:48,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:48,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 12:47:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 12:47:48,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-30 12:47:48,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:48,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:48,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:48,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:48,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:49,036 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2023-08-30 12:47:49,036 INFO L131 PetriNetUnfolder]: For 4923/4923 co-relation queries the response was YES. [2023-08-30 12:47:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 826 events. 481/826 cut-off events. For 4923/4923 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3313 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3828. Up to 299 conditions per place. [2023-08-30 12:47:49,042 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2023-08-30 12:47:49,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 1182 flow [2023-08-30 12:47:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:47:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:47:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 975 transitions. [2023-08-30 12:47:49,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47055984555984554 [2023-08-30 12:47:49,045 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 975 transitions. [2023-08-30 12:47:49,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 975 transitions. [2023-08-30 12:47:49,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:49,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 975 transitions. [2023-08-30 12:47:49,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.64285714285714) internal successors, (975), 14 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:49,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:49,051 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 148.0) internal successors, (2220), 15 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:49,051 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 474 flow. Second operand 14 states and 975 transitions. [2023-08-30 12:47:49,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 1182 flow [2023-08-30 12:47:49,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1080 flow, removed 46 selfloop flow, removed 3 redundant places. [2023-08-30 12:47:49,062 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 745 flow [2023-08-30 12:47:49,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=745, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-08-30 12:47:49,063 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2023-08-30 12:47:49,063 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 745 flow [2023-08-30 12:47:49,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.83333333333333) internal successors, (778), 12 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:49,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:49,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:49,071 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 12:47:49,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:49,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:49,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -65917474, now seen corresponding path program 2 times [2023-08-30 12:47:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:49,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192804860] [2023-08-30 12:47:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:49,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192804860] [2023-08-30 12:47:49,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192804860] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:49,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284389952] [2023-08-30 12:47:49,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:47:49,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:49,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:49,357 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 12:47:49,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 12:47:49,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:47:49,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:49,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:47:49,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:49,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:47:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284389952] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:47:49,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:47:49,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-30 12:47:49,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313551152] [2023-08-30 12:47:49,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:47:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:47:49,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:49,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:47:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:47:49,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:49,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 745 flow. Second operand has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:49,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:49,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:49,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:50,028 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2023-08-30 12:47:50,028 INFO L131 PetriNetUnfolder]: For 10066/10066 co-relation queries the response was YES. [2023-08-30 12:47:50,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1306 events. 761/1306 cut-off events. For 10066/10066 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5609 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6416. Up to 499 conditions per place. [2023-08-30 12:47:50,037 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2023-08-30 12:47:50,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1967 flow [2023-08-30 12:47:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:47:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:47:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1315 transitions. [2023-08-30 12:47:50,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763869132290187 [2023-08-30 12:47:50,042 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1315 transitions. [2023-08-30 12:47:50,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1315 transitions. [2023-08-30 12:47:50,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:50,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1315 transitions. [2023-08-30 12:47:50,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.21052631578948) internal successors, (1315), 19 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,050 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 148.0) internal successors, (2960), 20 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,051 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 745 flow. Second operand 19 states and 1315 transitions. [2023-08-30 12:47:50,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1967 flow [2023-08-30 12:47:50,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1908 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-30 12:47:50,101 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1417 flow [2023-08-30 12:47:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1417, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2023-08-30 12:47:50,102 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2023-08-30 12:47:50,103 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1417 flow [2023-08-30 12:47:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 64.625) internal successors, (1034), 16 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:47:50,103 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:50,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 12:47:50,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:47:50,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:47:50,305 INFO L85 PathProgramCache]: Analyzing trace with hash 770837146, now seen corresponding path program 2 times [2023-08-30 12:47:50,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:47:50,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509408611] [2023-08-30 12:47:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:47:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:47:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:47:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:50,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:47:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509408611] [2023-08-30 12:47:50,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509408611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:47:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407103528] [2023-08-30 12:47:50,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:47:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:47:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:47:50,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 12:47:50,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 12:47:50,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:47:50,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:47:50,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 12:47:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:47:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:47:50,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:47:50,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407103528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:47:50,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:47:50,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 21 [2023-08-30 12:47:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848055478] [2023-08-30 12:47:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:47:50,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 12:47:50,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:47:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 12:47:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-08-30 12:47:50,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 148 [2023-08-30 12:47:50,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1417 flow. Second operand has 9 states, 9 states have (on average 65.11111111111111) internal successors, (586), 9 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:47:50,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 148 [2023-08-30 12:47:50,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:47:50,956 INFO L130 PetriNetUnfolder]: 1203/1914 cut-off events. [2023-08-30 12:47:50,957 INFO L131 PetriNetUnfolder]: For 11233/11233 co-relation queries the response was YES. [2023-08-30 12:47:50,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 1914 events. 1203/1914 cut-off events. For 11233/11233 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9068 event pairs, 66 based on Foata normal form. 174/2088 useless extension candidates. Maximal degree in co-relation 9419. Up to 1156 conditions per place. [2023-08-30 12:47:50,968 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 0 selfloop transitions, 0 changer transitions 220/220 dead transitions. [2023-08-30 12:47:50,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 220 transitions, 3079 flow [2023-08-30 12:47:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 12:47:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 12:47:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-08-30 12:47:50,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-08-30 12:47:50,970 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-08-30 12:47:50,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-08-30 12:47:50,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:47:50,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-08-30 12:47:50,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,975 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 148.0) internal successors, (1332), 9 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:50,975 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1417 flow. Second operand 8 states and 555 transitions. [2023-08-30 12:47:50,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 220 transitions, 3079 flow [2023-08-30 12:47:51,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 220 transitions, 2512 flow, removed 68 selfloop flow, removed 29 redundant places. [2023-08-30 12:47:51,017 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-30 12:47:51,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-30 12:47:51,018 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 50 predicate places. [2023-08-30 12:47:51,018 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-30 12:47:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 65.11111111111111) internal successors, (586), 9 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 12:47:51,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 12:47:51,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-08-30 12:47:51,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:47:51,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:47:51,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:47:51,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:47:51,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:47:51,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:47:51,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:47:51,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:47:51,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:47:51,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 12:47:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 12:47:51,229 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:47:51,233 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:47:51,233 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:47:51,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:47:51 BasicIcfg [2023-08-30 12:47:51,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:47:51,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:47:51,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:47:51,236 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:47:51,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:47:43" (3/4) ... [2023-08-30 12:47:51,238 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:47:51,242 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 12:47:51,242 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 12:47:51,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 12:47:51,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 12:47:51,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:47:51,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:47:51,265 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:47:51,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:47:51,266 INFO L158 Benchmark]: Toolchain (without parser) took 8950.29ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 52.2MB in the beginning and 78.8MB in the end (delta: -26.5MB). Peak memory consumption was 61.4MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,266 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.2MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:47:51,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.25ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 51.1MB in the end (delta: 937.9kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.77ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 49.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,267 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 75.5MB. Free memory was 49.1MB in the beginning and 47.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,267 INFO L158 Benchmark]: RCFGBuilder took 380.24ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 33.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,268 INFO L158 Benchmark]: TraceAbstraction took 8044.10ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 32.9MB in the beginning and 80.7MB in the end (delta: -47.8MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,268 INFO L158 Benchmark]: Witness Printer took 30.13ms. Allocated memory is still 161.5MB. Free memory was 80.7MB in the beginning and 78.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 12:47:51,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.2MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.25ms. Allocated memory is still 75.5MB. Free memory was 52.0MB in the beginning and 51.1MB in the end (delta: 937.9kB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.77ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 49.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 75.5MB. Free memory was 49.1MB in the beginning and 47.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.24ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 33.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8044.10ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 32.9MB in the beginning and 80.7MB in the end (delta: -47.8MB). Peak memory consumption was 92.1MB. Max. memory is 16.1GB. * Witness Printer took 30.13ms. Allocated memory is still 161.5MB. Free memory was 80.7MB in the beginning and 78.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 77 PlacesBefore, 25 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1802 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 1843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1524, independent: 1502, independent conditional: 0, independent unconditional: 1502, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 981, independent: 970, independent conditional: 0, independent unconditional: 970, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1524, independent: 532, independent conditional: 0, independent unconditional: 532, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 981, unknown conditional: 0, unknown unconditional: 981] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 868 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 779 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1056 IncrementalHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 26 mSDtfsCounter, 1056 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1417occurred in iteration=14, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 12 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 38/118 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:47:51,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE