./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c --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/weaver/popl20-more-sorted.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --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 15:41:00,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:41:00,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:41:00,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:41:00,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:41:00,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:41:00,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:41:00,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:41:00,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:41:00,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:41:00,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:41:00,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:41:00,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:41:00,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:41:00,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:41:00,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:41:00,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:41:00,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:41:00,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:41:00,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:41:00,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:41:00,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:41:00,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:41:00,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:41:00,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:41:00,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:41:00,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:41:00,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:41:00,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:41:00,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:41:00,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:41:00,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:41:00,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:41:00,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:41:00,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:41:00,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:41:00,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:41:00,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:41:00,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:41:00,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:41:00,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:41:00,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:41:00,512 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:41:00,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:41:00,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:41:00,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:41:00,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:41:00,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:41:00,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:41:00,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:41:00,514 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:41:00,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:41:00,515 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:41:00,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:41:00,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:41:00,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:41:00,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:41:00,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:41:00,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:41:00,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:41:00,516 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:41:00,516 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:41:00,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:41:00,517 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:41:00,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:41:00,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:41:00,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:41:00,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:41:00,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:41:00,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:41:00,518 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:41:00,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:41:00,519 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:41:00,519 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:41:00,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:41:00,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:41:00,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:41:00,778 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:41:00,779 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:41:00,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-08-30 15:41:01,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:41:01,859 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:41:01,859 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-08-30 15:41:01,864 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5392b6e/e69df1fd9a2a427b84ae814476c0d2a0/FLAGa0fb55a29 [2023-08-30 15:41:01,881 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b5392b6e/e69df1fd9a2a427b84ae814476c0d2a0 [2023-08-30 15:41:01,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:41:01,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:41:01,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:41:01,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:41:01,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:41:01,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:01" (1/1) ... [2023-08-30 15:41:01,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64887bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:01, skipping insertion in model container [2023-08-30 15:41:01,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:41:01" (1/1) ... [2023-08-30 15:41:01,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:41:01,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:41:02,036 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-08-30 15:41:02,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:41:02,050 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:41:02,082 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-08-30 15:41:02,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:41:02,099 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:41:02,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02 WrapperNode [2023-08-30 15:41:02,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:41:02,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:41:02,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:41:02,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:41:02,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,139 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 110 [2023-08-30 15:41:02,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:41:02,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:41:02,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:41:02,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:41:02,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:41:02,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:41:02,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:41:02,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:41:02,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (1/1) ... [2023-08-30 15:41:02,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:41:02,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:02,198 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 15:41:02,216 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 15:41:02,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:41:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:41:02,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:41:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:41:02,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:41:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:41:02,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:41:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:41:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:41:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:41:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:41:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:41:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:41:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:41:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:41:02,223 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 15:41:02,341 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:41:02,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:41:02,565 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:41:02,571 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:41:02,573 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:41:02,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:02 BoogieIcfgContainer [2023-08-30 15:41:02,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:41:02,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:41:02,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:41:02,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:41:02,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:41:01" (1/3) ... [2023-08-30 15:41:02,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522fb052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:02, skipping insertion in model container [2023-08-30 15:41:02,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:41:02" (2/3) ... [2023-08-30 15:41:02,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522fb052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:41:02, skipping insertion in model container [2023-08-30 15:41:02,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:02" (3/3) ... [2023-08-30 15:41:02,582 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-08-30 15:41:02,587 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:41:02,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:41:02,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 15:41:02,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:41:02,663 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:41:02,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 209 transitions, 442 flow [2023-08-30 15:41:02,743 INFO L130 PetriNetUnfolder]: 15/206 cut-off events. [2023-08-30 15:41:02,743 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:41:02,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 206 events. 15/206 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 368 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-08-30 15:41:02,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 209 transitions, 442 flow [2023-08-30 15:41:02,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 188 transitions, 391 flow [2023-08-30 15:41:02,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:41:02,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 188 transitions, 391 flow [2023-08-30 15:41:02,766 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 188 transitions, 391 flow [2023-08-30 15:41:02,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 188 transitions, 391 flow [2023-08-30 15:41:02,793 INFO L130 PetriNetUnfolder]: 14/188 cut-off events. [2023-08-30 15:41:02,793 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:41:02,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 188 events. 14/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 366 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-08-30 15:41:02,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 7406 [2023-08-30 15:41:08,513 INFO L134 LiptonReduction]: Checked pairs total: 8678 [2023-08-30 15:41:08,513 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-30 15:41:08,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:41:08,542 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;@198bac2f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:41:08,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-30 15:41:08,545 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:41:08,545 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:41:08,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:08,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:41:08,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:08,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:08,549 INFO L85 PathProgramCache]: Analyzing trace with hash 26104, now seen corresponding path program 1 times [2023-08-30 15:41:08,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:08,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347117284] [2023-08-30 15:41:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:08,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:08,768 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 15:41:08,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:08,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347117284] [2023-08-30 15:41:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347117284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:08,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:08,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:08,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884690310] [2023-08-30 15:41:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:08,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:08,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:08,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:08,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-08-30 15:41:08,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:08,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:08,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-08-30 15:41:08,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:09,626 INFO L130 PetriNetUnfolder]: 9161/12051 cut-off events. [2023-08-30 15:41:09,627 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2023-08-30 15:41:09,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24129 conditions, 12051 events. 9161/12051 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 64008 event pairs, 4728 based on Foata normal form. 0/4513 useless extension candidates. Maximal degree in co-relation 11015. Up to 5797 conditions per place. [2023-08-30 15:41:09,679 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 71 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-08-30 15:41:09,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 332 flow [2023-08-30 15:41:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-30 15:41:09,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2023-08-30 15:41:09,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-30 15:41:09,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-30 15:41:09,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:09,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-30 15:41:09,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:09,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:09,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:09,700 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 654 transitions. [2023-08-30 15:41:09,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 332 flow [2023-08-30 15:41:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:09,719 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 106 flow [2023-08-30 15:41:09,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-30 15:41:09,723 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-30 15:41:09,723 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 106 flow [2023-08-30 15:41:09,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:09,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:09,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:09,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:41:09,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:09,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 810931, now seen corresponding path program 1 times [2023-08-30 15:41:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032854367] [2023-08-30 15:41:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:09,816 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 15:41:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032854367] [2023-08-30 15:41:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032854367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014502786] [2023-08-30 15:41:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:09,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:09,822 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 15:41:09,825 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 15:41:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:09,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:09,958 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 15:41:09,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014502786] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:09,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:41:09,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707055943] [2023-08-30 15:41:09,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:09,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:09,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:09,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-08-30 15:41:09,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:09,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:09,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-08-30 15:41:09,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:10,676 INFO L130 PetriNetUnfolder]: 9161/12050 cut-off events. [2023-08-30 15:41:10,677 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 15:41:10,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23991 conditions, 12050 events. 9161/12050 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 63932 event pairs, 4728 based on Foata normal form. 0/4515 useless extension candidates. Maximal degree in co-relation 11993. Up to 5795 conditions per place. [2023-08-30 15:41:10,742 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 15:41:10,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 320 flow [2023-08-30 15:41:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 837 transitions. [2023-08-30 15:41:10,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982142857142857 [2023-08-30 15:41:10,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 837 transitions. [2023-08-30 15:41:10,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 837 transitions. [2023-08-30 15:41:10,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:10,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 837 transitions. [2023-08-30 15:41:10,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,750 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,751 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 4 states and 837 transitions. [2023-08-30 15:41:10,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 320 flow [2023-08-30 15:41:10,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:10,754 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 104 flow [2023-08-30 15:41:10,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 15:41:10,754 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-30 15:41:10,755 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 104 flow [2023-08-30 15:41:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:10,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:10,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:41:10,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:41:10,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:10,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:10,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash 810941, now seen corresponding path program 1 times [2023-08-30 15:41:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:10,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759557814] [2023-08-30 15:41:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:11,038 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 15:41:11,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:11,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759557814] [2023-08-30 15:41:11,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759557814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905248117] [2023-08-30 15:41:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:11,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:11,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:11,042 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 15:41:11,045 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 15:41:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:11,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:11,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:11,108 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 15:41:11,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:11,121 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 15:41:11,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905248117] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:11,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:11,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:41:11,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975377380] [2023-08-30 15:41:11,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:11,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:11,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:11,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 420 [2023-08-30 15:41:11,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 192.14285714285714) internal successors, (1345), 7 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:11,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:11,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 420 [2023-08-30 15:41:11,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:12,738 INFO L130 PetriNetUnfolder]: 22901/30122 cut-off events. [2023-08-30 15:41:12,738 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 15:41:12,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59962 conditions, 30122 events. 22901/30122 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 2106. Compared 175348 event pairs, 11820 based on Foata normal form. 0/11331 useless extension candidates. Maximal degree in co-relation 47963. Up to 5796 conditions per place. [2023-08-30 15:41:12,880 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 172 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-08-30 15:41:12,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 182 transitions, 766 flow [2023-08-30 15:41:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1326 transitions. [2023-08-30 15:41:12,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261904761904762 [2023-08-30 15:41:12,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1326 transitions. [2023-08-30 15:41:12,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1326 transitions. [2023-08-30 15:41:12,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:12,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1326 transitions. [2023-08-30 15:41:12,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,891 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 104 flow. Second operand 6 states and 1326 transitions. [2023-08-30 15:41:12,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 182 transitions, 766 flow [2023-08-30 15:41:12,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 763 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:12,894 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 137 flow [2023-08-30 15:41:12,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-30 15:41:12,894 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 15:41:12,895 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 137 flow [2023-08-30 15:41:12,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.14285714285714) internal successors, (1345), 7 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:12,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:12,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:41:12,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:41:13,103 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:13,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash 779419965, now seen corresponding path program 1 times [2023-08-30 15:41:13,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197749703] [2023-08-30 15:41:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:13,183 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 15:41:13,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:13,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197749703] [2023-08-30 15:41:13,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197749703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:13,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:13,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031504783] [2023-08-30 15:41:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:13,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:13,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:13,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:13,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 420 [2023-08-30 15:41:13,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:13,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:13,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 420 [2023-08-30 15:41:13,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:14,528 INFO L130 PetriNetUnfolder]: 22901/29272 cut-off events. [2023-08-30 15:41:14,529 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 15:41:14,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59126 conditions, 29272 events. 22901/29272 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 2142. Compared 159387 event pairs, 11820 based on Foata normal form. 0/10362 useless extension candidates. Maximal degree in co-relation 47293. Up to 28967 conditions per place. [2023-08-30 15:41:14,637 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 40 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 15:41:14,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 215 flow [2023-08-30 15:41:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2023-08-30 15:41:14,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738095238095238 [2023-08-30 15:41:14,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2023-08-30 15:41:14,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2023-08-30 15:41:14,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:14,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2023-08-30 15:41:14,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,643 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 137 flow. Second operand 3 states and 597 transitions. [2023-08-30 15:41:14,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 215 flow [2023-08-30 15:41:14,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:14,645 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 127 flow [2023-08-30 15:41:14,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 15:41:14,646 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 15:41:14,646 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 127 flow [2023-08-30 15:41:14,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:14,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:41:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:41:14,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:14,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 779420244, now seen corresponding path program 1 times [2023-08-30 15:41:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189507897] [2023-08-30 15:41:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:14,681 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 15:41:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189507897] [2023-08-30 15:41:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189507897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:14,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:14,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334393280] [2023-08-30 15:41:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:14,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:14,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-08-30 15:41:14,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:14,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:14,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-08-30 15:41:14,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:16,769 INFO L130 PetriNetUnfolder]: 34721/44892 cut-off events. [2023-08-30 15:41:16,770 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2023-08-30 15:41:16,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90924 conditions, 44892 events. 34721/44892 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 2948. Compared 258680 event pairs, 10520 based on Foata normal form. 0/17577 useless extension candidates. Maximal degree in co-relation 90912. Up to 27178 conditions per place. [2023-08-30 15:41:16,924 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 69 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 15:41:16,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 332 flow [2023-08-30 15:41:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-08-30 15:41:16,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-08-30 15:41:16,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-08-30 15:41:16,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-08-30 15:41:16,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:16,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-08-30 15:41:16,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,930 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 127 flow. Second operand 3 states and 640 transitions. [2023-08-30 15:41:16,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 332 flow [2023-08-30 15:41:16,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:16,932 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 142 flow [2023-08-30 15:41:16,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-30 15:41:16,932 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-30 15:41:16,933 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 142 flow [2023-08-30 15:41:16,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:16,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:41:16,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:41:16,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:16,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 779420139, now seen corresponding path program 1 times [2023-08-30 15:41:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925386753] [2023-08-30 15:41:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:16,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:16,962 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 15:41:16,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:16,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925386753] [2023-08-30 15:41:16,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925386753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:16,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:16,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:16,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068539848] [2023-08-30 15:41:16,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:16,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:16,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 420 [2023-08-30 15:41:16,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:16,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:16,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 420 [2023-08-30 15:41:16,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:18,436 INFO L130 PetriNetUnfolder]: 22841/29907 cut-off events. [2023-08-30 15:41:18,436 INFO L131 PetriNetUnfolder]: For 1568/2078 co-relation queries the response was YES. [2023-08-30 15:41:18,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63710 conditions, 29907 events. 22841/29907 cut-off events. For 1568/2078 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 172422 event pairs, 12900 based on Foata normal form. 510/13527 useless extension candidates. Maximal degree in co-relation 63697. Up to 29612 conditions per place. [2023-08-30 15:41:18,531 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 39 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 15:41:18,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 218 flow [2023-08-30 15:41:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:18,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2023-08-30 15:41:18,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476984126984127 [2023-08-30 15:41:18,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 601 transitions. [2023-08-30 15:41:18,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 601 transitions. [2023-08-30 15:41:18,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:18,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 601 transitions. [2023-08-30 15:41:18,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,545 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 142 flow. Second operand 3 states and 601 transitions. [2023-08-30 15:41:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 218 flow [2023-08-30 15:41:18,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:18,547 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 138 flow [2023-08-30 15:41:18,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-30 15:41:18,549 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-30 15:41:18,550 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 138 flow [2023-08-30 15:41:18,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:18,550 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:41:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:41:18,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:18,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1609663294, now seen corresponding path program 2 times [2023-08-30 15:41:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490842672] [2023-08-30 15:41:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:18,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:18,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490842672] [2023-08-30 15:41:18,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490842672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:18,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270727471] [2023-08-30 15:41:18,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:18,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:18,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:18,627 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 15:41:18,629 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 15:41:18,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:18,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:18,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:18,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:41:18,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:18,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270727471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:18,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:18,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:41:18,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042896166] [2023-08-30 15:41:18,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:18,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:18,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:41:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 420 [2023-08-30 15:41:18,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:18,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:18,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 420 [2023-08-30 15:41:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:20,187 INFO L130 PetriNetUnfolder]: 22841/29906 cut-off events. [2023-08-30 15:41:20,187 INFO L131 PetriNetUnfolder]: For 1563/2073 co-relation queries the response was YES. [2023-08-30 15:41:20,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63190 conditions, 29906 events. 22841/29906 cut-off events. For 1563/2073 co-relation queries the response was YES. Maximal size of possible extension queue 1983. Compared 172275 event pairs, 12900 based on Foata normal form. 511/13527 useless extension candidates. Maximal degree in co-relation 63176. Up to 29611 conditions per place. [2023-08-30 15:41:20,319 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 15:41:20,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 206 flow [2023-08-30 15:41:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 15:41:20,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849206349206349 [2023-08-30 15:41:20,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 15:41:20,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 15:41:20,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:20,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 15:41:20,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:20,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:20,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:20,324 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 138 flow. Second operand 3 states and 611 transitions. [2023-08-30 15:41:20,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 206 flow [2023-08-30 15:41:20,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 195 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:41:20,326 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2023-08-30 15:41:20,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-30 15:41:20,326 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-08-30 15:41:20,327 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2023-08-30 15:41:20,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:20,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:20,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:20,331 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 15:41:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:20,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:20,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1698560992, now seen corresponding path program 1 times [2023-08-30 15:41:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105742411] [2023-08-30 15:41:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:20,563 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 15:41:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:20,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105742411] [2023-08-30 15:41:20,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105742411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:20,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019377053] [2023-08-30 15:41:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:20,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:20,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:20,566 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 15:41:20,569 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 15:41:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:20,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:41:20,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:20,658 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 15:41:20,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019377053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:20,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 15:41:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039258554] [2023-08-30 15:41:20,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:20,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:41:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:41:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:20,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 420 [2023-08-30 15:41:20,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:20,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:20,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 420 [2023-08-30 15:41:20,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:21,849 INFO L130 PetriNetUnfolder]: 19601/25690 cut-off events. [2023-08-30 15:41:21,849 INFO L131 PetriNetUnfolder]: For 1652/1652 co-relation queries the response was YES. [2023-08-30 15:41:21,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54539 conditions, 25690 events. 19601/25690 cut-off events. For 1652/1652 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 144999 event pairs, 11164 based on Foata normal form. 1/11367 useless extension candidates. Maximal degree in co-relation 54528. Up to 25430 conditions per place. [2023-08-30 15:41:21,980 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 15:41:21,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 199 flow [2023-08-30 15:41:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:21,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 15:41:21,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2023-08-30 15:41:21,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 15:41:21,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 15:41:21,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:21,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 15:41:21,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,986 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 3 states and 574 transitions. [2023-08-30 15:41:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 199 flow [2023-08-30 15:41:21,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:21,988 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 124 flow [2023-08-30 15:41:21,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-30 15:41:21,988 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-30 15:41:21,988 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 124 flow [2023-08-30 15:41:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:21,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:21,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:21,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:41:22,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:22,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:22,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash -639639803, now seen corresponding path program 1 times [2023-08-30 15:41:22,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:22,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302979769] [2023-08-30 15:41:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302979769] [2023-08-30 15:41:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302979769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536376952] [2023-08-30 15:41:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:22,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:22,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:22,232 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 15:41:22,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:41:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:41:22,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:22,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536376952] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:22,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:22,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-08-30 15:41:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134662946] [2023-08-30 15:41:22,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:22,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 15:41:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 15:41:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-30 15:41:22,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-08-30 15:41:22,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:22,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:22,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-08-30 15:41:22,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:23,849 INFO L130 PetriNetUnfolder]: 14916/19255 cut-off events. [2023-08-30 15:41:23,850 INFO L131 PetriNetUnfolder]: For 764/764 co-relation queries the response was YES. [2023-08-30 15:41:23,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40537 conditions, 19255 events. 14916/19255 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 99969 event pairs, 2028 based on Foata normal form. 330/8980 useless extension candidates. Maximal degree in co-relation 40524. Up to 6504 conditions per place. [2023-08-30 15:41:23,934 INFO L137 encePairwiseOnDemand]: 410/420 looper letters, 153 selfloop transitions, 9 changer transitions 0/164 dead transitions. [2023-08-30 15:41:23,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 164 transitions, 715 flow [2023-08-30 15:41:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 15:41:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 15:41:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1924 transitions. [2023-08-30 15:41:23,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580952380952381 [2023-08-30 15:41:23,939 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1924 transitions. [2023-08-30 15:41:23,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1924 transitions. [2023-08-30 15:41:23,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:23,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1924 transitions. [2023-08-30 15:41:23,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.4) internal successors, (1924), 10 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,947 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,947 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 124 flow. Second operand 10 states and 1924 transitions. [2023-08-30 15:41:23,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 164 transitions, 715 flow [2023-08-30 15:41:23,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 164 transitions, 711 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:23,951 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 154 flow [2023-08-30 15:41:23,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-30 15:41:23,952 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-30 15:41:23,952 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 154 flow [2023-08-30 15:41:23,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 177.9090909090909) internal successors, (1957), 11 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:23,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:23,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:23,959 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 15:41:24,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:24,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:24,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash -632103114, now seen corresponding path program 1 times [2023-08-30 15:41:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119032515] [2023-08-30 15:41:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:24,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:24,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119032515] [2023-08-30 15:41:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119032515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:24,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:24,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176333356] [2023-08-30 15:41:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:24,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:24,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-08-30 15:41:24,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:24,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:24,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-08-30 15:41:24,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:25,474 INFO L130 PetriNetUnfolder]: 17084/22729 cut-off events. [2023-08-30 15:41:25,474 INFO L131 PetriNetUnfolder]: For 4240/4395 co-relation queries the response was YES. [2023-08-30 15:41:25,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51070 conditions, 22729 events. 17084/22729 cut-off events. For 4240/4395 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 132473 event pairs, 7276 based on Foata normal form. 155/12570 useless extension candidates. Maximal degree in co-relation 51055. Up to 15403 conditions per place. [2023-08-30 15:41:25,577 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 64 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-30 15:41:25,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 358 flow [2023-08-30 15:41:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-08-30 15:41:25,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992063492063492 [2023-08-30 15:41:25,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-08-30 15:41:25,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-08-30 15:41:25,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:25,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-08-30 15:41:25,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:25,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:25,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:25,583 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 154 flow. Second operand 3 states and 629 transitions. [2023-08-30 15:41:25,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 358 flow [2023-08-30 15:41:25,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 69 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 15:41:25,586 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 161 flow [2023-08-30 15:41:25,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-30 15:41:25,586 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-30 15:41:25,587 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 161 flow [2023-08-30 15:41:25,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:25,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:25,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:25,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:41:25,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:25,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash 902934857, now seen corresponding path program 1 times [2023-08-30 15:41:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:25,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009713600] [2023-08-30 15:41:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:25,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:41:25,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009713600] [2023-08-30 15:41:25,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009713600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:25,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753451105] [2023-08-30 15:41:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:25,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:25,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:25,645 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 15:41:25,647 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 15:41:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:25,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 15:41:25,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:25,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:25,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753451105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:25,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:25,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2023-08-30 15:41:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208288270] [2023-08-30 15:41:25,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:41:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:41:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:41:26,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 420 [2023-08-30 15:41:26,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 161 flow. Second operand has 15 states, 15 states have (on average 177.8) internal successors, (2667), 15 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:26,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:26,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 420 [2023-08-30 15:41:26,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:27,677 INFO L130 PetriNetUnfolder]: 20793/27616 cut-off events. [2023-08-30 15:41:27,677 INFO L131 PetriNetUnfolder]: For 4704/5234 co-relation queries the response was YES. [2023-08-30 15:41:27,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65655 conditions, 27616 events. 20793/27616 cut-off events. For 4704/5234 co-relation queries the response was YES. Maximal size of possible extension queue 1387. Compared 163189 event pairs, 3431 based on Foata normal form. 676/16263 useless extension candidates. Maximal degree in co-relation 65639. Up to 6104 conditions per place. [2023-08-30 15:41:27,800 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 292 selfloop transitions, 17 changer transitions 0/311 dead transitions. [2023-08-30 15:41:27,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 311 transitions, 1545 flow [2023-08-30 15:41:27,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 15:41:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 15:41:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3290 transitions. [2023-08-30 15:41:27,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2023-08-30 15:41:27,805 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3290 transitions. [2023-08-30 15:41:27,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3290 transitions. [2023-08-30 15:41:27,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:27,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3290 transitions. [2023-08-30 15:41:27,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 193.52941176470588) internal successors, (3290), 17 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 420.0) internal successors, (7560), 18 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,817 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 420.0) internal successors, (7560), 18 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,817 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 161 flow. Second operand 17 states and 3290 transitions. [2023-08-30 15:41:27,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 311 transitions, 1545 flow [2023-08-30 15:41:27,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 311 transitions, 1531 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:27,824 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 244 flow [2023-08-30 15:41:27,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=244, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-08-30 15:41:27,824 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-08-30 15:41:27,824 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 244 flow [2023-08-30 15:41:27,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 177.8) internal successors, (2667), 15 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:27,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:27,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:27,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 15:41:28,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:28,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:28,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:28,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1860680428, now seen corresponding path program 1 times [2023-08-30 15:41:28,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:28,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189373427] [2023-08-30 15:41:28,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:28,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189373427] [2023-08-30 15:41:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189373427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676748663] [2023-08-30 15:41:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:28,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:28,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:28,065 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:28,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:41:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:28,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:41:28,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:28,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:41:28,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676748663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:28,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:41:28,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:41:28,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38938085] [2023-08-30 15:41:28,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:28,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:28,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:28,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:41:28,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 420 [2023-08-30 15:41:28,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:28,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:28,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 420 [2023-08-30 15:41:28,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:29,270 INFO L130 PetriNetUnfolder]: 17605/23344 cut-off events. [2023-08-30 15:41:29,270 INFO L131 PetriNetUnfolder]: For 11450/11582 co-relation queries the response was YES. [2023-08-30 15:41:29,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59467 conditions, 23344 events. 17605/23344 cut-off events. For 11450/11582 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 132317 event pairs, 1675 based on Foata normal form. 132/13926 useless extension candidates. Maximal degree in co-relation 59447. Up to 13122 conditions per place. [2023-08-30 15:41:29,385 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 96 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-30 15:41:29,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 102 transitions, 659 flow [2023-08-30 15:41:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 830 transitions. [2023-08-30 15:41:29,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2023-08-30 15:41:29,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 830 transitions. [2023-08-30 15:41:29,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 830 transitions. [2023-08-30 15:41:29,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:29,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 830 transitions. [2023-08-30 15:41:29,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:29,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:29,394 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:29,394 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 244 flow. Second operand 4 states and 830 transitions. [2023-08-30 15:41:29,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 102 transitions, 659 flow [2023-08-30 15:41:29,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 617 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-30 15:41:29,403 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 214 flow [2023-08-30 15:41:29,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-30 15:41:29,404 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 20 predicate places. [2023-08-30 15:41:29,405 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 214 flow [2023-08-30 15:41:29,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:29,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:29,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:29,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:29,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:29,610 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:29,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1860680408, now seen corresponding path program 1 times [2023-08-30 15:41:29,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:29,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949853055] [2023-08-30 15:41:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:29,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:29,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949853055] [2023-08-30 15:41:29,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949853055] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099283376] [2023-08-30 15:41:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:29,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:29,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:29,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:29,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:41:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:29,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 15:41:29,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:29,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:29,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099283376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:29,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:29,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:41:29,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310732032] [2023-08-30 15:41:29,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:29,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:41:29,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:29,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:41:29,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:41:29,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-08-30 15:41:29,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:29,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:29,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-08-30 15:41:29,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:32,252 INFO L130 PetriNetUnfolder]: 37196/49181 cut-off events. [2023-08-30 15:41:32,252 INFO L131 PetriNetUnfolder]: For 19527/19802 co-relation queries the response was YES. [2023-08-30 15:41:32,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123749 conditions, 49181 events. 37196/49181 cut-off events. For 19527/19802 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 295290 event pairs, 5697 based on Foata normal form. 1769/30676 useless extension candidates. Maximal degree in co-relation 123729. Up to 14025 conditions per place. [2023-08-30 15:41:32,504 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 159 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2023-08-30 15:41:32,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 169 transitions, 1004 flow [2023-08-30 15:41:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:41:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:41:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1259 transitions. [2023-08-30 15:41:32,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4996031746031746 [2023-08-30 15:41:32,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1259 transitions. [2023-08-30 15:41:32,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1259 transitions. [2023-08-30 15:41:32,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:32,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1259 transitions. [2023-08-30 15:41:32,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:32,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:32,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:32,511 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 214 flow. Second operand 6 states and 1259 transitions. [2023-08-30 15:41:32,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 169 transitions, 1004 flow [2023-08-30 15:41:32,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 169 transitions, 1001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:32,524 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 263 flow [2023-08-30 15:41:32,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-08-30 15:41:32,524 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 15:41:32,525 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 263 flow [2023-08-30 15:41:32,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:32,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:32,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:32,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:32,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-30 15:41:32,730 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:32,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1853928655, now seen corresponding path program 1 times [2023-08-30 15:41:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:32,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902267234] [2023-08-30 15:41:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:32,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:32,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:32,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902267234] [2023-08-30 15:41:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902267234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:32,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:32,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:41:32,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408371103] [2023-08-30 15:41:32,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:32,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:41:32,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:32,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:41:32,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:41:32,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 420 [2023-08-30 15:41:32,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:32,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:32,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 420 [2023-08-30 15:41:32,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:34,163 INFO L130 PetriNetUnfolder]: 19451/26988 cut-off events. [2023-08-30 15:41:34,163 INFO L131 PetriNetUnfolder]: For 25713/26202 co-relation queries the response was YES. [2023-08-30 15:41:34,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76809 conditions, 26988 events. 19451/26988 cut-off events. For 25713/26202 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 162724 event pairs, 5190 based on Foata normal form. 489/20627 useless extension candidates. Maximal degree in co-relation 76786. Up to 16490 conditions per place. [2023-08-30 15:41:34,316 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 73 selfloop transitions, 2 changer transitions 4/83 dead transitions. [2023-08-30 15:41:34,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 581 flow [2023-08-30 15:41:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:41:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:41:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 801 transitions. [2023-08-30 15:41:34,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2023-08-30 15:41:34,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 801 transitions. [2023-08-30 15:41:34,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 801 transitions. [2023-08-30 15:41:34,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:34,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 801 transitions. [2023-08-30 15:41:34,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.25) internal successors, (801), 4 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:34,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:34,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:34,321 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 263 flow. Second operand 4 states and 801 transitions. [2023-08-30 15:41:34,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 581 flow [2023-08-30 15:41:34,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:34,345 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 250 flow [2023-08-30 15:41:34,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2023-08-30 15:41:34,346 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 15:41:34,346 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 250 flow [2023-08-30 15:41:34,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:34,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:34,346 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2023-08-30 15:41:34,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:41:34,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:34,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:34,347 INFO L85 PathProgramCache]: Analyzing trace with hash -345853896, now seen corresponding path program 2 times [2023-08-30 15:41:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:34,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754970932] [2023-08-30 15:41:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:34,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:41:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754970932] [2023-08-30 15:41:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754970932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967776510] [2023-08-30 15:41:34,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:34,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:34,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:34,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:34,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:41:34,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:34,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:34,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:34,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:41:34,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:41:34,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967776510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:34,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:34,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 2, 2] total 13 [2023-08-30 15:41:34,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543604876] [2023-08-30 15:41:34,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:34,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:41:34,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:41:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:41:34,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 420 [2023-08-30 15:41:34,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 50 transitions, 250 flow. Second operand has 14 states, 14 states have (on average 175.21428571428572) internal successors, (2453), 14 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:34,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:34,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 420 [2023-08-30 15:41:34,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:36,941 INFO L130 PetriNetUnfolder]: 20649/27902 cut-off events. [2023-08-30 15:41:36,941 INFO L131 PetriNetUnfolder]: For 21780/22095 co-relation queries the response was YES. [2023-08-30 15:41:36,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76537 conditions, 27902 events. 20649/27902 cut-off events. For 21780/22095 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 163337 event pairs, 1948 based on Foata normal form. 493/20306 useless extension candidates. Maximal degree in co-relation 76512. Up to 5304 conditions per place. [2023-08-30 15:41:37,042 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 377 selfloop transitions, 28 changer transitions 19/426 dead transitions. [2023-08-30 15:41:37,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 426 transitions, 2746 flow [2023-08-30 15:41:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-30 15:41:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-30 15:41:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4654 transitions. [2023-08-30 15:41:37,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44323809523809526 [2023-08-30 15:41:37,048 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4654 transitions. [2023-08-30 15:41:37,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4654 transitions. [2023-08-30 15:41:37,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:37,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4654 transitions. [2023-08-30 15:41:37,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 186.16) internal successors, (4654), 25 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 420.0) internal successors, (10920), 26 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,062 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 420.0) internal successors, (10920), 26 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,063 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 250 flow. Second operand 25 states and 4654 transitions. [2023-08-30 15:41:37,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 426 transitions, 2746 flow [2023-08-30 15:41:37,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 426 transitions, 2743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:41:37,086 INFO L231 Difference]: Finished difference. Result has 99 places, 57 transitions, 374 flow [2023-08-30 15:41:37,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=374, PETRI_PLACES=99, PETRI_TRANSITIONS=57} [2023-08-30 15:41:37,087 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2023-08-30 15:41:37,087 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 57 transitions, 374 flow [2023-08-30 15:41:37,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 175.21428571428572) internal successors, (2453), 14 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:37,088 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:37,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:37,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 15:41:37,292 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:37,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1746142782, now seen corresponding path program 2 times [2023-08-30 15:41:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616223553] [2023-08-30 15:41:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-30 15:41:37,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616223553] [2023-08-30 15:41:37,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616223553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:41:37,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:41:37,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:41:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639838612] [2023-08-30 15:41:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:41:37,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:41:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:41:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:41:37,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 420 [2023-08-30 15:41:37,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 57 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:37,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:37,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 420 [2023-08-30 15:41:37,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:38,532 INFO L130 PetriNetUnfolder]: 13833/18624 cut-off events. [2023-08-30 15:41:38,533 INFO L131 PetriNetUnfolder]: For 23223/23615 co-relation queries the response was YES. [2023-08-30 15:41:38,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57161 conditions, 18624 events. 13833/18624 cut-off events. For 23223/23615 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 104013 event pairs, 8727 based on Foata normal form. 686/14606 useless extension candidates. Maximal degree in co-relation 57133. Up to 18564 conditions per place. [2023-08-30 15:41:38,623 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 15:41:38,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 56 transitions, 464 flow [2023-08-30 15:41:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:41:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:41:38,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2023-08-30 15:41:38,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-30 15:41:38,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 600 transitions. [2023-08-30 15:41:38,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 600 transitions. [2023-08-30 15:41:38,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:38,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 600 transitions. [2023-08-30 15:41:38,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,627 INFO L175 Difference]: Start difference. First operand has 99 places, 57 transitions, 374 flow. Second operand 3 states and 600 transitions. [2023-08-30 15:41:38,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 56 transitions, 464 flow [2023-08-30 15:41:38,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 56 transitions, 420 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-30 15:41:38,651 INFO L231 Difference]: Finished difference. Result has 88 places, 56 transitions, 322 flow [2023-08-30 15:41:38,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=88, PETRI_TRANSITIONS=56} [2023-08-30 15:41:38,652 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-30 15:41:38,652 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 56 transitions, 322 flow [2023-08-30 15:41:38,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:38,652 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:38,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:41:38,652 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:38,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1704148665, now seen corresponding path program 1 times [2023-08-30 15:41:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:38,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709570256] [2023-08-30 15:41:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:38,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709570256] [2023-08-30 15:41:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709570256] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593178453] [2023-08-30 15:41:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:38,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:38,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:38,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:38,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:41:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:38,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:41:38,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:38,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:38,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593178453] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:38,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:38,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:41:38,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483493386] [2023-08-30 15:41:38,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:38,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:41:38,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:38,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:41:38,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:41:38,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 420 [2023-08-30 15:41:38,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 56 transitions, 322 flow. Second operand has 13 states, 13 states have (on average 191.3846153846154) internal successors, (2488), 13 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:38,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:38,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 420 [2023-08-30 15:41:38,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:41,858 INFO L130 PetriNetUnfolder]: 35146/47273 cut-off events. [2023-08-30 15:41:41,858 INFO L131 PetriNetUnfolder]: For 59697/60024 co-relation queries the response was YES. [2023-08-30 15:41:42,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143675 conditions, 47273 events. 35146/47273 cut-off events. For 59697/60024 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 274556 event pairs, 2529 based on Foata normal form. 2091/37795 useless extension candidates. Maximal degree in co-relation 143648. Up to 6453 conditions per place. [2023-08-30 15:41:42,270 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 344 selfloop transitions, 18 changer transitions 0/367 dead transitions. [2023-08-30 15:41:42,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 367 transitions, 2876 flow [2023-08-30 15:41:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:41:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:41:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2458 transitions. [2023-08-30 15:41:42,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876984126984127 [2023-08-30 15:41:42,274 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2458 transitions. [2023-08-30 15:41:42,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2458 transitions. [2023-08-30 15:41:42,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:42,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2458 transitions. [2023-08-30 15:41:42,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 204.83333333333334) internal successors, (2458), 12 states have internal predecessors, (2458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,281 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 420.0) internal successors, (5460), 13 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,281 INFO L175 Difference]: Start difference. First operand has 88 places, 56 transitions, 322 flow. Second operand 12 states and 2458 transitions. [2023-08-30 15:41:42,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 367 transitions, 2876 flow [2023-08-30 15:41:42,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 367 transitions, 2875 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:41:42,356 INFO L231 Difference]: Finished difference. Result has 105 places, 69 transitions, 479 flow [2023-08-30 15:41:42,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=479, PETRI_PLACES=105, PETRI_TRANSITIONS=69} [2023-08-30 15:41:42,357 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-08-30 15:41:42,357 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 69 transitions, 479 flow [2023-08-30 15:41:42,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.3846153846154) internal successors, (2488), 13 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:41:42,357 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:42,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:41:42,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 15:41:42,562 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 15:41:42,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:41:42,562 INFO L85 PathProgramCache]: Analyzing trace with hash 631119493, now seen corresponding path program 2 times [2023-08-30 15:41:42,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:41:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806342136] [2023-08-30 15:41:42,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:41:42,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:41:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:41:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:41:42,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:41:42,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806342136] [2023-08-30 15:41:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806342136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:41:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226571707] [2023-08-30 15:41:42,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:41:42,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:41:42,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:41:42,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:41:42,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 15:41:42,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:41:42,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:41:42,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:41:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:41:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-08-30 15:41:42,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:41:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-08-30 15:41:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226571707] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:41:42,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:41:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 2, 2] total 14 [2023-08-30 15:41:42,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496022889] [2023-08-30 15:41:42,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:41:42,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:41:42,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:41:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:41:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:41:42,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 420 [2023-08-30 15:41:42,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 69 transitions, 479 flow. Second operand has 15 states, 15 states have (on average 187.66666666666666) internal successors, (2815), 15 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:42,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:41:42,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 420 [2023-08-30 15:41:42,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:41:47,576 INFO L130 PetriNetUnfolder]: 39634/53231 cut-off events. [2023-08-30 15:41:47,576 INFO L131 PetriNetUnfolder]: For 101933/102300 co-relation queries the response was YES. [2023-08-30 15:41:47,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174127 conditions, 53231 events. 39634/53231 cut-off events. For 101933/102300 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 307486 event pairs, 996 based on Foata normal form. 955/41009 useless extension candidates. Maximal degree in co-relation 174094. Up to 7335 conditions per place. [2023-08-30 15:41:47,827 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 0 selfloop transitions, 0 changer transitions 428/428 dead transitions. [2023-08-30 15:41:47,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 428 transitions, 3445 flow [2023-08-30 15:41:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 15:41:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 15:41:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2990 transitions. [2023-08-30 15:41:47,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746031746031746 [2023-08-30 15:41:47,829 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2990 transitions. [2023-08-30 15:41:47,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2990 transitions. [2023-08-30 15:41:47,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:41:47,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2990 transitions. [2023-08-30 15:41:47,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 199.33333333333334) internal successors, (2990), 15 states have internal predecessors, (2990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 420.0) internal successors, (6720), 16 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,837 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 420.0) internal successors, (6720), 16 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:47,837 INFO L175 Difference]: Start difference. First operand has 105 places, 69 transitions, 479 flow. Second operand 15 states and 2990 transitions. [2023-08-30 15:41:47,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 428 transitions, 3445 flow [2023-08-30 15:41:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 428 transitions, 3368 flow, removed 10 selfloop flow, removed 13 redundant places. [2023-08-30 15:41:48,091 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2023-08-30 15:41:48,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2023-08-30 15:41:48,092 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2023-08-30 15:41:48,092 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2023-08-30 15:41:48,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 187.66666666666666) internal successors, (2815), 15 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:41:48,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-08-30 15:41:48,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-08-30 15:41:48,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-08-30 15:41:48,095 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-08-30 15:41:48,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-08-30 15:41:48,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-08-30 15:41:48,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-08-30 15:41:48,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-08-30 15:41:48,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-08-30 15:41:48,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 15:41:48,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 15:41:48,301 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:41:48,305 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:41:48,305 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:41:48,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:41:48 BasicIcfg [2023-08-30 15:41:48,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:41:48,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:41:48,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:41:48,307 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:41:48,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:41:02" (3/4) ... [2023-08-30 15:41:48,309 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:41:48,312 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:41:48,312 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:41:48,312 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:41:48,315 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 15:41:48,315 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:41:48,315 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:41:48,315 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:41:48,345 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:41:48,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:41:48,346 INFO L158 Benchmark]: Toolchain (without parser) took 46461.42ms. Allocated memory was 83.9MB in the beginning and 7.7GB in the end (delta: 7.6GB). Free memory was 60.9MB in the beginning and 5.9GB in the end (delta: -5.9GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-08-30 15:41:48,346 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:41:48,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.77ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 48.9MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 15:41:48,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.26ms. Allocated memory is still 83.9MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:41:48,347 INFO L158 Benchmark]: Boogie Preprocessor took 27.65ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 45.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:41:48,347 INFO L158 Benchmark]: RCFGBuilder took 408.32ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 51.0MB in the end (delta: -5.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-08-30 15:41:48,347 INFO L158 Benchmark]: TraceAbstraction took 45729.42ms. Allocated memory was 83.9MB in the beginning and 7.7GB in the end (delta: 7.6GB). Free memory was 50.1MB in the beginning and 5.9GB in the end (delta: -5.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2023-08-30 15:41:48,348 INFO L158 Benchmark]: Witness Printer took 38.76ms. Allocated memory is still 7.7GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:41:48,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 38.3MB in the beginning and 38.3MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.77ms. Allocated memory is still 83.9MB. Free memory was 60.5MB in the beginning and 48.9MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.26ms. Allocated memory is still 83.9MB. Free memory was 48.6MB in the beginning and 47.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.65ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 45.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 408.32ms. Allocated memory is still 83.9MB. Free memory was 45.2MB in the beginning and 51.0MB in the end (delta: -5.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 45729.42ms. Allocated memory was 83.9MB in the beginning and 7.7GB in the end (delta: 7.6GB). Free memory was 50.1MB in the beginning and 5.9GB in the end (delta: -5.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 38.76ms. Allocated memory is still 7.7GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 3.0MB). 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: 5.7s, 184 PlacesBefore, 50 PlacesAfterwards, 188 TransitionsBefore, 46 TransitionsAfterwards, 7406 CoEnabledTransitionPairs, 7 FixpointIterations, 77 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 20 ConcurrentYvCompositions, 8 ChoiceCompositions, 211 TotalNumberOfCompositions, 8678 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8195, independent: 8155, independent conditional: 0, independent unconditional: 8155, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4312, independent: 4298, independent conditional: 0, independent unconditional: 4298, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8195, independent: 3857, independent conditional: 0, independent unconditional: 3857, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 4312, unknown conditional: 0, unknown unconditional: 4312] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: 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 7 procedures, 281 locations, 37 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: 45.6s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4574 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4168 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 569 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5768 IncrementalHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 89 mSDtfsCounter, 5768 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=479occurred in iteration=17, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 283 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 991 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1675 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 276/509 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:41:48,364 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