./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/fibonacci.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 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:39:54,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:39:54,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:39:54,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:39:54,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:39:54,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:39:54,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:39:54,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:39:54,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:39:54,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:39:54,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:39:54,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:39:54,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:39:54,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:39:54,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:39:54,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:39:54,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:39:54,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:39:54,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:39:54,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:39:54,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:39:54,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:39:54,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:39:54,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:39:54,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:39:54,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:39:54,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:39:54,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:39:54,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:39:54,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:39:54,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:39:54,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:39:54,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:39:54,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:39:54,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:39:54,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:39:54,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:39:54,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:39:54,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:39:54,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:39:54,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:39:54,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:39:54,444 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:39:54,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:39:54,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:39:54,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:39:54,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:39:54,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:39:54,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:39:54,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:39:54,448 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:39:54,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:39:54,449 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:39:54,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:39:54,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:39:54,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:39:54,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:39:54,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:39:54,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:39:54,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:39:54,450 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:39:54,450 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:39:54,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:39:54,451 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:39:54,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:39:54,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:39:54,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:39:54,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:39:54,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:39:54,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:39:54,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:39:54,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:39:54,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:39:54,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:39:54,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:39:54,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:39:54,454 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:39:54,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:39:54,454 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:39:54,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:39:54,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:39:54,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:39:54,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:39:54,815 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:39:54,816 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:39:54,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-09-01 07:39:56,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:39:56,194 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:39:56,194 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-09-01 07:39:56,200 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78000e884/8ce94e6699584ca78ac56071c95d7c34/FLAG7e9d9b412 [2023-09-01 07:39:56,217 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78000e884/8ce94e6699584ca78ac56071c95d7c34 [2023-09-01 07:39:56,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:39:56,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:39:56,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:39:56,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:39:56,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:39:56,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d7df63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56, skipping insertion in model container [2023-09-01 07:39:56,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:39:56,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:39:56,423 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/fibonacci.wvr.c[2330,2343] [2023-09-01 07:39:56,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:39:56,445 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:39:56,479 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/fibonacci.wvr.c[2330,2343] [2023-09-01 07:39:56,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:39:56,502 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:39:56,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56 WrapperNode [2023-09-01 07:39:56,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:39:56,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:39:56,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:39:56,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:39:56,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,565 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 229 [2023-09-01 07:39:56,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:39:56,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:39:56,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:39:56,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:39:56,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:39:56,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:39:56,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:39:56,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:39:56,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (1/1) ... [2023-09-01 07:39:56,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:39:56,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:56,661 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) [2023-09-01 07:39:56,686 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 [2023-09-01 07:39:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:39:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:39:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:39:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:39:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:39:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:39:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:39:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:39:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:39:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:39:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:39:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:39:56,704 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:39:56,825 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:39:56,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:39:57,260 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:39:57,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:39:57,278 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 07:39:57,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:39:57 BoogieIcfgContainer [2023-09-01 07:39:57,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:39:57,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:39:57,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:39:57,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:39:57,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:39:56" (1/3) ... [2023-09-01 07:39:57,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9092f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:39:57, skipping insertion in model container [2023-09-01 07:39:57,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:56" (2/3) ... [2023-09-01 07:39:57,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9092f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:39:57, skipping insertion in model container [2023-09-01 07:39:57,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:39:57" (3/3) ... [2023-09-01 07:39:57,288 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-09-01 07:39:57,295 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:39:57,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:39:57,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-09-01 07:39:57,305 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:39:57,461 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:39:57,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 596 flow [2023-09-01 07:39:57,642 INFO L130 PetriNetUnfolder]: 22/288 cut-off events. [2023-09-01 07:39:57,643 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:39:57,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 288 events. 22/288 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 593 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-09-01 07:39:57,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 290 transitions, 596 flow [2023-09-01 07:39:57,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 272 transitions, 553 flow [2023-09-01 07:39:57,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:39:57,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 258 places, 272 transitions, 553 flow [2023-09-01 07:39:57,688 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 258 places, 272 transitions, 553 flow [2023-09-01 07:39:57,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 272 transitions, 553 flow [2023-09-01 07:39:57,757 INFO L130 PetriNetUnfolder]: 21/272 cut-off events. [2023-09-01 07:39:57,758 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:39:57,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 272 events. 21/272 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 498 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-09-01 07:39:57,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 23868 [2023-09-01 07:40:17,872 INFO L134 LiptonReduction]: Checked pairs total: 23323 [2023-09-01 07:40:17,873 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-09-01 07:40:17,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:40:17,911 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;@214aebd6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:40:17,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-09-01 07:40:17,914 INFO L130 PetriNetUnfolder]: 1/6 cut-off events. [2023-09-01 07:40:17,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:40:17,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:17,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:40:17,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:17,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 38939634, now seen corresponding path program 1 times [2023-09-01 07:40:17,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:17,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500675777] [2023-09-01 07:40:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:17,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:18,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500675777] [2023-09-01 07:40:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500675777] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705190786] [2023-09-01 07:40:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:18,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:18,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:18,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:18,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:18,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:18,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:18,515 INFO L130 PetriNetUnfolder]: 476/673 cut-off events. [2023-09-01 07:40:18,516 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 07:40:18,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 673 events. 476/673 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 2937 event pairs, 222 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 1238. Up to 665 conditions per place. [2023-09-01 07:40:18,521 INFO L137 encePairwiseOnDemand]: 656/673 looper letters, 22 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-09-01 07:40:18,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 105 flow [2023-09-01 07:40:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2023-09-01 07:40:18,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42050520059435365 [2023-09-01 07:40:18,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2023-09-01 07:40:18,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2023-09-01 07:40:18,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:18,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2023-09-01 07:40:18,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,553 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 91 flow. Second operand 3 states and 849 transitions. [2023-09-01 07:40:18,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 105 flow [2023-09-01 07:40:18,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:40:18,559 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 56 flow [2023-09-01 07:40:18,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-09-01 07:40:18,563 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -17 predicate places. [2023-09-01 07:40:18,564 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 56 flow [2023-09-01 07:40:18,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:18,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:40:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:40:18,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:18,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash 38939711, now seen corresponding path program 1 times [2023-09-01 07:40:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979292830] [2023-09-01 07:40:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:18,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979292830] [2023-09-01 07:40:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979292830] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:18,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:40:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191590023] [2023-09-01 07:40:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:18,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:18,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:18,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:18,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:18,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:18,977 INFO L130 PetriNetUnfolder]: 671/998 cut-off events. [2023-09-01 07:40:18,977 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:40:18,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 998 events. 671/998 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 5249 event pairs, 232 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 2019. Up to 592 conditions per place. [2023-09-01 07:40:18,983 INFO L137 encePairwiseOnDemand]: 669/673 looper letters, 41 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-09-01 07:40:18,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 183 flow [2023-09-01 07:40:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-09-01 07:40:18,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424962852897474 [2023-09-01 07:40:18,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-09-01 07:40:18,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-09-01 07:40:18,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:18,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-09-01 07:40:18,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:18,996 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 858 transitions. [2023-09-01 07:40:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 183 flow [2023-09-01 07:40:18,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:18,998 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 69 flow [2023-09-01 07:40:18,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-09-01 07:40:18,999 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -15 predicate places. [2023-09-01 07:40:19,000 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 69 flow [2023-09-01 07:40:19,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:19,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:40:19,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:40:19,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:19,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash 38939656, now seen corresponding path program 1 times [2023-09-01 07:40:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:19,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903568841] [2023-09-01 07:40:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:19,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903568841] [2023-09-01 07:40:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903568841] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:19,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416546510] [2023-09-01 07:40:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:19,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:19,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:19,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:19,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:19,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:19,294 INFO L130 PetriNetUnfolder]: 498/760 cut-off events. [2023-09-01 07:40:19,295 INFO L131 PetriNetUnfolder]: For 42/61 co-relation queries the response was YES. [2023-09-01 07:40:19,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 760 events. 498/760 cut-off events. For 42/61 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 3945 event pairs, 301 based on Foata normal form. 19/304 useless extension candidates. Maximal degree in co-relation 1639. Up to 754 conditions per place. [2023-09-01 07:40:19,299 INFO L137 encePairwiseOnDemand]: 671/673 looper letters, 22 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-09-01 07:40:19,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 113 flow [2023-09-01 07:40:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-09-01 07:40:19,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125804853888063 [2023-09-01 07:40:19,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-09-01 07:40:19,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-09-01 07:40:19,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:19,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-09-01 07:40:19,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,310 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 69 flow. Second operand 3 states and 833 transitions. [2023-09-01 07:40:19,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 113 flow [2023-09-01 07:40:19,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:19,312 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 67 flow [2023-09-01 07:40:19,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-09-01 07:40:19,313 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -15 predicate places. [2023-09-01 07:40:19,313 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 67 flow [2023-09-01 07:40:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:19,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:40:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:40:19,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:19,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash 38939670, now seen corresponding path program 1 times [2023-09-01 07:40:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691102005] [2023-09-01 07:40:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691102005] [2023-09-01 07:40:19,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691102005] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:19,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:19,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:19,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246177843] [2023-09-01 07:40:19,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:19,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:19,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:19,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:19,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:19,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:19,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:19,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:19,528 INFO L130 PetriNetUnfolder]: 413/631 cut-off events. [2023-09-01 07:40:19,528 INFO L131 PetriNetUnfolder]: For 41/60 co-relation queries the response was YES. [2023-09-01 07:40:19,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 631 events. 413/631 cut-off events. For 41/60 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 3115 event pairs, 244 based on Foata normal form. 19/274 useless extension candidates. Maximal degree in co-relation 1357. Up to 626 conditions per place. [2023-09-01 07:40:19,532 INFO L137 encePairwiseOnDemand]: 671/673 looper letters, 21 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 07:40:19,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 109 flow [2023-09-01 07:40:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:19,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 832 transitions. [2023-09-01 07:40:19,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4120851906884596 [2023-09-01 07:40:19,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 832 transitions. [2023-09-01 07:40:19,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 832 transitions. [2023-09-01 07:40:19,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:19,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 832 transitions. [2023-09-01 07:40:19,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,544 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 67 flow. Second operand 3 states and 832 transitions. [2023-09-01 07:40:19,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 109 flow [2023-09-01 07:40:19,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:19,546 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 66 flow [2023-09-01 07:40:19,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-09-01 07:40:19,547 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -15 predicate places. [2023-09-01 07:40:19,547 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 66 flow [2023-09-01 07:40:19,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:19,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:40:19,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:40:19,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:19,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash 38939669, now seen corresponding path program 1 times [2023-09-01 07:40:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457254980] [2023-09-01 07:40:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:19,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:19,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457254980] [2023-09-01 07:40:19,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457254980] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:19,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:19,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:19,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635929644] [2023-09-01 07:40:19,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:19,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:19,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:19,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:19,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:19,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:19,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:19,730 INFO L130 PetriNetUnfolder]: 328/502 cut-off events. [2023-09-01 07:40:19,731 INFO L131 PetriNetUnfolder]: For 41/60 co-relation queries the response was YES. [2023-09-01 07:40:19,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 502 events. 328/502 cut-off events. For 41/60 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2313 event pairs, 187 based on Foata normal form. 19/244 useless extension candidates. Maximal degree in co-relation 1096. Up to 498 conditions per place. [2023-09-01 07:40:19,734 INFO L137 encePairwiseOnDemand]: 671/673 looper letters, 20 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 07:40:19,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 106 flow [2023-09-01 07:40:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-09-01 07:40:19,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115898959881129 [2023-09-01 07:40:19,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-09-01 07:40:19,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-09-01 07:40:19,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:19,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-09-01 07:40:19,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,746 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 3 states and 831 transitions. [2023-09-01 07:40:19,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 106 flow [2023-09-01 07:40:19,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:19,747 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 65 flow [2023-09-01 07:40:19,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-09-01 07:40:19,750 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -15 predicate places. [2023-09-01 07:40:19,750 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 65 flow [2023-09-01 07:40:19,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:19,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:19,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:40:19,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:40:19,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:19,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1207132365, now seen corresponding path program 1 times [2023-09-01 07:40:19,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:19,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187371] [2023-09-01 07:40:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:19,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:19,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187371] [2023-09-01 07:40:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187371] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:40:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393550957] [2023-09-01 07:40:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:19,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:19,849 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) [2023-09-01 07:40:19,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:40:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:19,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:40:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:20,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:20,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393550957] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:20,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:40:20,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:40:20,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740800665] [2023-09-01 07:40:20,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:40:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:20,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:40:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:40:20,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:20,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:20,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:20,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:20,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:20,310 INFO L130 PetriNetUnfolder]: 351/524 cut-off events. [2023-09-01 07:40:20,311 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-09-01 07:40:20,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 524 events. 351/524 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2488 event pairs, 9 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 1145. Up to 288 conditions per place. [2023-09-01 07:40:20,313 INFO L137 encePairwiseOnDemand]: 670/673 looper letters, 46 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-09-01 07:40:20,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 216 flow [2023-09-01 07:40:20,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:40:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:40:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1133 transitions. [2023-09-01 07:40:20,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208766716196137 [2023-09-01 07:40:20,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1133 transitions. [2023-09-01 07:40:20,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1133 transitions. [2023-09-01 07:40:20,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:20,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1133 transitions. [2023-09-01 07:40:20,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.25) internal successors, (1133), 4 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:20,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 673.0) internal successors, (3365), 5 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:20,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 673.0) internal successors, (3365), 5 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:20,329 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 65 flow. Second operand 4 states and 1133 transitions. [2023-09-01 07:40:20,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 216 flow [2023-09-01 07:40:20,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:20,330 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 64 flow [2023-09-01 07:40:20,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-09-01 07:40:20,331 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -14 predicate places. [2023-09-01 07:40:20,331 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 64 flow [2023-09-01 07:40:20,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:20,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:20,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:40:20,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:40:20,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-09-01 07:40:20,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:20,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:20,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1207132366, now seen corresponding path program 1 times [2023-09-01 07:40:20,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:20,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510729962] [2023-09-01 07:40:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:20,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510729962] [2023-09-01 07:40:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510729962] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:40:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913553821] [2023-09-01 07:40:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:20,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:20,641 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) [2023-09-01 07:40:20,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:40:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:20,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:40:20,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:20,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:40:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913553821] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:40:20,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:40:20,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:40:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455406922] [2023-09-01 07:40:20,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:40:20,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:40:20,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:40:20,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:40:20,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:20,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 64 flow. Second operand has 7 states, 7 states have (on average 272.42857142857144) internal successors, (1907), 7 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:20,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:20,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:20,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:21,130 INFO L130 PetriNetUnfolder]: 735/1100 cut-off events. [2023-09-01 07:40:21,131 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2023-09-01 07:40:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 1100 events. 735/1100 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5350 event pairs, 77 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 2415. Up to 316 conditions per place. [2023-09-01 07:40:21,147 INFO L137 encePairwiseOnDemand]: 670/673 looper letters, 79 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-09-01 07:40:21,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 85 transitions, 376 flow [2023-09-01 07:40:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:40:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:40:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1713 transitions. [2023-09-01 07:40:21,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42421991084695393 [2023-09-01 07:40:21,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1713 transitions. [2023-09-01 07:40:21,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1713 transitions. [2023-09-01 07:40:21,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:21,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1713 transitions. [2023-09-01 07:40:21,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.5) internal successors, (1713), 6 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 673.0) internal successors, (4711), 7 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 673.0) internal successors, (4711), 7 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,165 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 64 flow. Second operand 6 states and 1713 transitions. [2023-09-01 07:40:21,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 85 transitions, 376 flow [2023-09-01 07:40:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 85 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:21,169 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 97 flow [2023-09-01 07:40:21,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-09-01 07:40:21,171 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -8 predicate places. [2023-09-01 07:40:21,171 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 97 flow [2023-09-01 07:40:21,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.42857142857144) internal successors, (1907), 7 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:21,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:40:21,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 07:40:21,377 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,SelfDestructingSolverStorable6 [2023-09-01 07:40:21,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:21,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1219986353, now seen corresponding path program 1 times [2023-09-01 07:40:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740421271] [2023-09-01 07:40:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740421271] [2023-09-01 07:40:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740421271] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:21,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:21,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:40:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897029623] [2023-09-01 07:40:21,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:21,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:21,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:21,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:21,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:21,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:21,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:21,681 INFO L130 PetriNetUnfolder]: 754/1322 cut-off events. [2023-09-01 07:40:21,682 INFO L131 PetriNetUnfolder]: For 1128/1196 co-relation queries the response was YES. [2023-09-01 07:40:21,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 1322 events. 754/1322 cut-off events. For 1128/1196 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7634 event pairs, 399 based on Foata normal form. 68/940 useless extension candidates. Maximal degree in co-relation 3314. Up to 797 conditions per place. [2023-09-01 07:40:21,689 INFO L137 encePairwiseOnDemand]: 669/673 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-09-01 07:40:21,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 249 flow [2023-09-01 07:40:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 848 transitions. [2023-09-01 07:40:21,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42000990589400694 [2023-09-01 07:40:21,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 848 transitions. [2023-09-01 07:40:21,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 848 transitions. [2023-09-01 07:40:21,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:21,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 848 transitions. [2023-09-01 07:40:21,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,699 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 97 flow. Second operand 3 states and 848 transitions. [2023-09-01 07:40:21,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 249 flow [2023-09-01 07:40:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 234 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:21,702 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 103 flow [2023-09-01 07:40:21,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-09-01 07:40:21,703 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-09-01 07:40:21,703 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 103 flow [2023-09-01 07:40:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:21,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:40:21,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:40:21,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:21,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:21,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1219986422, now seen corresponding path program 1 times [2023-09-01 07:40:21,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:21,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360266541] [2023-09-01 07:40:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:21,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360266541] [2023-09-01 07:40:21,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360266541] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:21,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:21,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:21,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803431276] [2023-09-01 07:40:21,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:21,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:21,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:21,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:21,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:21,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:21,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:21,932 INFO L130 PetriNetUnfolder]: 539/950 cut-off events. [2023-09-01 07:40:21,933 INFO L131 PetriNetUnfolder]: For 468/544 co-relation queries the response was YES. [2023-09-01 07:40:21,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 950 events. 539/950 cut-off events. For 468/544 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5533 event pairs, 481 based on Foata normal form. 76/766 useless extension candidates. Maximal degree in co-relation 2471. Up to 946 conditions per place. [2023-09-01 07:40:21,938 INFO L137 encePairwiseOnDemand]: 670/673 looper letters, 21 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 07:40:21,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 143 flow [2023-09-01 07:40:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-09-01 07:40:21,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105993065874195 [2023-09-01 07:40:21,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-09-01 07:40:21,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-09-01 07:40:21,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:21,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-09-01 07:40:21,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,948 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 103 flow. Second operand 3 states and 829 transitions. [2023-09-01 07:40:21,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 143 flow [2023-09-01 07:40:21,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 24 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:21,950 INFO L231 Difference]: Finished difference. Result has 39 places, 24 transitions, 99 flow [2023-09-01 07:40:21,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2023-09-01 07:40:21,951 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-09-01 07:40:21,951 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 99 flow [2023-09-01 07:40:21,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:21,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:21,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:40:21,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:40:21,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:21,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1219986366, now seen corresponding path program 1 times [2023-09-01 07:40:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:21,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183990602] [2023-09-01 07:40:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:22,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183990602] [2023-09-01 07:40:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183990602] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:22,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:22,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:22,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886201959] [2023-09-01 07:40:22,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:22,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:22,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:22,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:22,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:22,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:22,188 INFO L130 PetriNetUnfolder]: 453/800 cut-off events. [2023-09-01 07:40:22,189 INFO L131 PetriNetUnfolder]: For 400/468 co-relation queries the response was YES. [2023-09-01 07:40:22,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 800 events. 453/800 cut-off events. For 400/468 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4466 event pairs, 399 based on Foata normal form. 68/672 useless extension candidates. Maximal degree in co-relation 2079. Up to 796 conditions per place. [2023-09-01 07:40:22,194 INFO L137 encePairwiseOnDemand]: 671/673 looper letters, 20 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 07:40:22,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 23 transitions, 139 flow [2023-09-01 07:40:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-09-01 07:40:22,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096087171867261 [2023-09-01 07:40:22,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-09-01 07:40:22,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-09-01 07:40:22,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:22,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-09-01 07:40:22,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,203 INFO L175 Difference]: Start difference. First operand has 39 places, 24 transitions, 99 flow. Second operand 3 states and 827 transitions. [2023-09-01 07:40:22,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 23 transitions, 139 flow [2023-09-01 07:40:22,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 23 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:22,205 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 98 flow [2023-09-01 07:40:22,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2023-09-01 07:40:22,206 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-09-01 07:40:22,206 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 98 flow [2023-09-01 07:40:22,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:22,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:40:22,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:40:22,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:22,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1219986365, now seen corresponding path program 1 times [2023-09-01 07:40:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:22,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288383729] [2023-09-01 07:40:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288383729] [2023-09-01 07:40:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288383729] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:22,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:22,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:22,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714482134] [2023-09-01 07:40:22,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:22,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:22,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:22,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:22,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:22,385 INFO L130 PetriNetUnfolder]: 367/650 cut-off events. [2023-09-01 07:40:22,386 INFO L131 PetriNetUnfolder]: For 335/395 co-relation queries the response was YES. [2023-09-01 07:40:22,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 650 events. 367/650 cut-off events. For 335/395 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3404 event pairs, 317 based on Foata normal form. 60/578 useless extension candidates. Maximal degree in co-relation 1719. Up to 646 conditions per place. [2023-09-01 07:40:22,390 INFO L137 encePairwiseOnDemand]: 671/673 looper letters, 19 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 07:40:22,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 22 transitions, 136 flow [2023-09-01 07:40:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-09-01 07:40:22,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091134224863794 [2023-09-01 07:40:22,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-09-01 07:40:22,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-09-01 07:40:22,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:22,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-09-01 07:40:22,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,399 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 98 flow. Second operand 3 states and 826 transitions. [2023-09-01 07:40:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 22 transitions, 136 flow [2023-09-01 07:40:22,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 22 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:22,402 INFO L231 Difference]: Finished difference. Result has 39 places, 22 transitions, 97 flow [2023-09-01 07:40:22,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2023-09-01 07:40:22,403 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-09-01 07:40:22,403 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 97 flow [2023-09-01 07:40:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:22,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:40:22,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 07:40:22,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:22,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:22,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1219986362, now seen corresponding path program 1 times [2023-09-01 07:40:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341095578] [2023-09-01 07:40:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:22,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341095578] [2023-09-01 07:40:22,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341095578] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:22,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:40:22,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:40:22,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308406678] [2023-09-01 07:40:22,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:40:22,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 673 [2023-09-01 07:40:22,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:22,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 673 [2023-09-01 07:40:22,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:22,602 INFO L130 PetriNetUnfolder]: 281/500 cut-off events. [2023-09-01 07:40:22,603 INFO L131 PetriNetUnfolder]: For 270/322 co-relation queries the response was YES. [2023-09-01 07:40:22,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 500 events. 281/500 cut-off events. For 270/322 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2394 event pairs, 235 based on Foata normal form. 52/484 useless extension candidates. Maximal degree in co-relation 1359. Up to 496 conditions per place. [2023-09-01 07:40:22,606 INFO L137 encePairwiseOnDemand]: 671/673 looper letters, 18 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-09-01 07:40:22,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 21 transitions, 133 flow [2023-09-01 07:40:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 825 transitions. [2023-09-01 07:40:22,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086181277860327 [2023-09-01 07:40:22,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 825 transitions. [2023-09-01 07:40:22,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 825 transitions. [2023-09-01 07:40:22,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:22,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 825 transitions. [2023-09-01 07:40:22,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,615 INFO L175 Difference]: Start difference. First operand has 39 places, 22 transitions, 97 flow. Second operand 3 states and 825 transitions. [2023-09-01 07:40:22,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 21 transitions, 133 flow [2023-09-01 07:40:22,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 21 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:22,617 INFO L231 Difference]: Finished difference. Result has 39 places, 21 transitions, 96 flow [2023-09-01 07:40:22,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=21} [2023-09-01 07:40:22,618 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2023-09-01 07:40:22,618 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 21 transitions, 96 flow [2023-09-01 07:40:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:22,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:22,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 07:40:22,619 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:22,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash 835129823, now seen corresponding path program 1 times [2023-09-01 07:40:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:22,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73449161] [2023-09-01 07:40:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:22,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73449161] [2023-09-01 07:40:22,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73449161] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:40:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368856352] [2023-09-01 07:40:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:22,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:22,693 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) [2023-09-01 07:40:22,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:40:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:22,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:40:22,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:22,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368856352] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:22,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:40:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:40:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921960760] [2023-09-01 07:40:22,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:22,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:40:22,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:40:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:40:22,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:22,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 21 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:22,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:22,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:22,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:23,022 INFO L130 PetriNetUnfolder]: 281/497 cut-off events. [2023-09-01 07:40:23,023 INFO L131 PetriNetUnfolder]: For 374/398 co-relation queries the response was YES. [2023-09-01 07:40:23,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 497 events. 281/497 cut-off events. For 374/398 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2263 event pairs, 30 based on Foata normal form. 24/487 useless extension candidates. Maximal degree in co-relation 1353. Up to 257 conditions per place. [2023-09-01 07:40:23,026 INFO L137 encePairwiseOnDemand]: 670/673 looper letters, 38 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-09-01 07:40:23,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 272 flow [2023-09-01 07:40:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:40:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:40:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1113 transitions. [2023-09-01 07:40:23,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41344725111441305 [2023-09-01 07:40:23,030 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1113 transitions. [2023-09-01 07:40:23,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1113 transitions. [2023-09-01 07:40:23,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:23,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1113 transitions. [2023-09-01 07:40:23,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 673.0) internal successors, (3365), 5 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 673.0) internal successors, (3365), 5 states have internal predecessors, (3365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,038 INFO L175 Difference]: Start difference. First operand has 39 places, 21 transitions, 96 flow. Second operand 4 states and 1113 transitions. [2023-09-01 07:40:23,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 272 flow [2023-09-01 07:40:23,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:40:23,040 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 95 flow [2023-09-01 07:40:23,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2023-09-01 07:40:23,042 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2023-09-01 07:40:23,042 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 95 flow [2023-09-01 07:40:23,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:23,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:23,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:40:23,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:23,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:23,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash 835129827, now seen corresponding path program 1 times [2023-09-01 07:40:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171795315] [2023-09-01 07:40:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:23,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:23,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171795315] [2023-09-01 07:40:23,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171795315] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:40:23,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101450245] [2023-09-01 07:40:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:23,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:23,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:23,302 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) [2023-09-01 07:40:23,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:40:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:23,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:40:23,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:23,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:40:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101450245] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:40:23,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:40:23,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:40:23,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782844151] [2023-09-01 07:40:23,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:40:23,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:40:23,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:40:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:40:23,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:23,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 95 flow. Second operand has 7 states, 7 states have (on average 272.7142857142857) internal successors, (1909), 7 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:23,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:23,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:23,715 INFO L130 PetriNetUnfolder]: 539/947 cut-off events. [2023-09-01 07:40:23,716 INFO L131 PetriNetUnfolder]: For 796/844 co-relation queries the response was YES. [2023-09-01 07:40:23,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 947 events. 539/947 cut-off events. For 796/844 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4821 event pairs, 153 based on Foata normal form. 48/961 useless extension candidates. Maximal degree in co-relation 2593. Up to 347 conditions per place. [2023-09-01 07:40:23,722 INFO L137 encePairwiseOnDemand]: 670/673 looper letters, 61 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2023-09-01 07:40:23,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 443 flow [2023-09-01 07:40:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:40:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:40:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1675 transitions. [2023-09-01 07:40:23,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41480931154036654 [2023-09-01 07:40:23,728 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1675 transitions. [2023-09-01 07:40:23,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1675 transitions. [2023-09-01 07:40:23,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:23,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1675 transitions. [2023-09-01 07:40:23,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 673.0) internal successors, (4711), 7 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 673.0) internal successors, (4711), 7 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,738 INFO L175 Difference]: Start difference. First operand has 40 places, 20 transitions, 95 flow. Second operand 6 states and 1675 transitions. [2023-09-01 07:40:23,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 443 flow [2023-09-01 07:40:23,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 67 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:40:23,741 INFO L231 Difference]: Finished difference. Result has 46 places, 23 transitions, 128 flow [2023-09-01 07:40:23,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=23} [2023-09-01 07:40:23,742 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-09-01 07:40:23,742 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 23 transitions, 128 flow [2023-09-01 07:40:23,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.7142857142857) internal successors, (1909), 7 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:23,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:40:23,743 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 07:40:23,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:40:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:23,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:40:23,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:40:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -79568960, now seen corresponding path program 2 times [2023-09-01 07:40:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:40:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909104900] [2023-09-01 07:40:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:40:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:40:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:40:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:40:24,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:40:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909104900] [2023-09-01 07:40:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909104900] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:40:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474604392] [2023-09-01 07:40:24,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:40:24,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:40:24,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:40:24,063 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) [2023-09-01 07:40:24,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:40:24,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:40:24,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:40:24,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:40:24,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:40:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:40:24,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:40:24,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474604392] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:40:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:40:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 07:40:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479627084] [2023-09-01 07:40:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:40:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:40:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:40:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:40:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:40:24,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 673 [2023-09-01 07:40:24,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 23 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:24,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:40:24,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 673 [2023-09-01 07:40:24,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:40:24,365 INFO L130 PetriNetUnfolder]: 421/746 cut-off events. [2023-09-01 07:40:24,365 INFO L131 PetriNetUnfolder]: For 1171/1263 co-relation queries the response was YES. [2023-09-01 07:40:24,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2198 conditions, 746 events. 421/746 cut-off events. For 1171/1263 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3732 event pairs, 369 based on Foata normal form. 144/886 useless extension candidates. Maximal degree in co-relation 2176. Up to 742 conditions per place. [2023-09-01 07:40:24,368 INFO L137 encePairwiseOnDemand]: 670/673 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-09-01 07:40:24,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 21 transitions, 146 flow [2023-09-01 07:40:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:40:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:40:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 826 transitions. [2023-09-01 07:40:24,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091134224863794 [2023-09-01 07:40:24,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 826 transitions. [2023-09-01 07:40:24,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 826 transitions. [2023-09-01 07:40:24,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:40:24,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 826 transitions. [2023-09-01 07:40:24,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:24,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:24,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 673.0) internal successors, (2692), 4 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:24,377 INFO L175 Difference]: Start difference. First operand has 46 places, 23 transitions, 128 flow. Second operand 3 states and 826 transitions. [2023-09-01 07:40:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 21 transitions, 146 flow [2023-09-01 07:40:24,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 21 transitions, 118 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 07:40:24,380 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-09-01 07:40:24,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=673, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-09-01 07:40:24,380 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -9 predicate places. [2023-09-01 07:40:24,380 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-09-01 07:40:24,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:40:24,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 58 remaining) [2023-09-01 07:40:24,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 58 remaining) [2023-09-01 07:40:24,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 58 remaining) [2023-09-01 07:40:24,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 58 remaining) [2023-09-01 07:40:24,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 58 remaining) [2023-09-01 07:40:24,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 58 remaining) [2023-09-01 07:40:24,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 58 remaining) [2023-09-01 07:40:24,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 58 remaining) [2023-09-01 07:40:24,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 58 remaining) [2023-09-01 07:40:24,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 58 remaining) [2023-09-01 07:40:24,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 58 remaining) [2023-09-01 07:40:24,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 58 remaining) [2023-09-01 07:40:24,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 58 remaining) [2023-09-01 07:40:24,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 58 remaining) [2023-09-01 07:40:24,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 58 remaining) [2023-09-01 07:40:24,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 58 remaining) [2023-09-01 07:40:24,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 58 remaining) [2023-09-01 07:40:24,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 58 remaining) [2023-09-01 07:40:24,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 58 remaining) [2023-09-01 07:40:24,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 58 remaining) [2023-09-01 07:40:24,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 58 remaining) [2023-09-01 07:40:24,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 58 remaining) [2023-09-01 07:40:24,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 58 remaining) [2023-09-01 07:40:24,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 58 remaining) [2023-09-01 07:40:24,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 58 remaining) [2023-09-01 07:40:24,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 58 remaining) [2023-09-01 07:40:24,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 58 remaining) [2023-09-01 07:40:24,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 58 remaining) [2023-09-01 07:40:24,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 58 remaining) [2023-09-01 07:40:24,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 58 remaining) [2023-09-01 07:40:24,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 58 remaining) [2023-09-01 07:40:24,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 58 remaining) [2023-09-01 07:40:24,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 58 remaining) [2023-09-01 07:40:24,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 58 remaining) [2023-09-01 07:40:24,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 58 remaining) [2023-09-01 07:40:24,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 58 remaining) [2023-09-01 07:40:24,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 58 remaining) [2023-09-01 07:40:24,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 58 remaining) [2023-09-01 07:40:24,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 58 remaining) [2023-09-01 07:40:24,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 58 remaining) [2023-09-01 07:40:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 58 remaining) [2023-09-01 07:40:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 58 remaining) [2023-09-01 07:40:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 58 remaining) [2023-09-01 07:40:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 58 remaining) [2023-09-01 07:40:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 58 remaining) [2023-09-01 07:40:24,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 58 remaining) [2023-09-01 07:40:24,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:40:24,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 07:40:24,599 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:40:24,604 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:40:24,604 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:40:24,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:40:24 BasicIcfg [2023-09-01 07:40:24,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:40:24,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:40:24,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:40:24,608 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:40:24,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:39:57" (3/4) ... [2023-09-01 07:40:24,611 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:40:24,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:40:24,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:40:24,619 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-09-01 07:40:24,619 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:40:24,620 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:40:24,620 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:40:24,655 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:40:24,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:40:24,656 INFO L158 Benchmark]: Toolchain (without parser) took 28436.43ms. Allocated memory was 58.7MB in the beginning and 350.2MB in the end (delta: 291.5MB). Free memory was 40.2MB in the beginning and 180.1MB in the end (delta: -139.9MB). Peak memory consumption was 151.2MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,657 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 48.2MB. Free memory is still 26.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:40:24,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.82ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 28.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.36ms. Allocated memory is still 58.7MB. Free memory was 28.6MB in the beginning and 26.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,658 INFO L158 Benchmark]: Boogie Preprocessor took 57.89ms. Allocated memory is still 58.7MB. Free memory was 26.3MB in the beginning and 38.6MB in the end (delta: -12.2MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,658 INFO L158 Benchmark]: RCFGBuilder took 655.94ms. Allocated memory is still 58.7MB. Free memory was 38.3MB in the beginning and 28.9MB in the end (delta: 9.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,658 INFO L158 Benchmark]: TraceAbstraction took 27324.56ms. Allocated memory was 58.7MB in the beginning and 350.2MB in the end (delta: 291.5MB). Free memory was 28.2MB in the beginning and 183.2MB in the end (delta: -155.0MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,659 INFO L158 Benchmark]: Witness Printer took 48.05ms. Allocated memory is still 350.2MB. Free memory was 183.2MB in the beginning and 180.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 07:40:24,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 48.2MB. Free memory is still 26.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.82ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 28.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.36ms. Allocated memory is still 58.7MB. Free memory was 28.6MB in the beginning and 26.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.89ms. Allocated memory is still 58.7MB. Free memory was 26.3MB in the beginning and 38.6MB in the end (delta: -12.2MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * RCFGBuilder took 655.94ms. Allocated memory is still 58.7MB. Free memory was 38.3MB in the beginning and 28.9MB in the end (delta: 9.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 27324.56ms. Allocated memory was 58.7MB in the beginning and 350.2MB in the end (delta: 291.5MB). Free memory was 28.2MB in the beginning and 183.2MB in the end (delta: -155.0MB). Peak memory consumption was 136.1MB. Max. memory is 16.1GB. * Witness Printer took 48.05ms. Allocated memory is still 350.2MB. Free memory was 183.2MB in the beginning and 180.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.2s, 258 PlacesBefore, 46 PlacesAfterwards, 272 TransitionsBefore, 41 TransitionsAfterwards, 23868 CoEnabledTransitionPairs, 9 FixpointIterations, 53 TrivialSequentialCompositions, 266 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 42 ConcurrentYvCompositions, 19 ChoiceCompositions, 383 TotalNumberOfCompositions, 23323 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23323, independent: 23323, independent conditional: 0, independent unconditional: 23323, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13357, independent: 13357, independent conditional: 0, independent unconditional: 13357, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23323, independent: 9966, independent conditional: 0, independent unconditional: 9966, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 13357, unknown conditional: 0, unknown unconditional: 13357] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 54]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 54]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 457 locations, 58 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: 27.1s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 20.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 541 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 404 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 795 IncrementalHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 44 mSDtfsCounter, 795 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=14, InterpolantAutomatonStates: 53, 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, 1.0s InterpolantComputationTime, 114 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 12/30 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 28 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:40:24,689 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