./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:49:50,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:49:50,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:49:50,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:49:50,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:49:50,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:49:50,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:49:50,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:49:50,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:49:50,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:49:50,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:49:50,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:49:50,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:49:50,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:49:50,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:49:50,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:49:50,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:49:50,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:49:50,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:49:50,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:49:50,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:49:50,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:49:50,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:49:50,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:49:50,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:49:50,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:49:50,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:49:50,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:49:50,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:49:50,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:49:50,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:49:50,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:49:50,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:49:50,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:49:50,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:49:50,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:49:50,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:49:50,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:49:50,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:49:50,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:49:50,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:49:50,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:49:50,503 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:49:50,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:49:50,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:49:50,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:49:50,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:49:50,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:49:50,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:49:50,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:49:50,506 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:49:50,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:49:50,506 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:49:50,506 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:49:50,507 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:49:50,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:49:50,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:49:50,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:49:50,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:49:50,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:49:50,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:49:50,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:49:50,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:49:50,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:49:50,510 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:49:50,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:49:50,510 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:49:50,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:49:50,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:49:50,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:49:50,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:49:50,748 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:49:50,748 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:49:50,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 14:49:51,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:49:51,848 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:49:51,849 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 14:49:51,853 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1faff9742/d5a9f09a46d24bf49be74e4a44ed63f7/FLAGa23a7f016 [2023-08-30 14:49:51,867 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1faff9742/d5a9f09a46d24bf49be74e4a44ed63f7 [2023-08-30 14:49:51,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:49:51,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:49:51,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:49:51,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:49:51,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:49:51,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:49:51" (1/1) ... [2023-08-30 14:49:51,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76974f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:51, skipping insertion in model container [2023-08-30 14:49:51,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:49:51" (1/1) ... [2023-08-30 14:49:51,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:49:51,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:49:52,044 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/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 14:49:52,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:49:52,060 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:49:52,087 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/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 14:49:52,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:49:52,100 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:49:52,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52 WrapperNode [2023-08-30 14:49:52,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:49:52,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:49:52,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:49:52,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:49:52,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,155 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 366 [2023-08-30 14:49:52,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:49:52,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:49:52,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:49:52,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:49:52,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:49:52,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:49:52,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:49:52,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:49:52,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (1/1) ... [2023-08-30 14:49:52,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:49:52,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:49:52,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:49:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:49:52,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:49:52,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:49:52,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:49:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:49:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:49:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:49:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:49:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:49:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:49:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:49:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:49:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:49:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:49:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:49:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:49:52,276 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:49:52,380 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:49:52,382 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:49:52,806 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:49:52,816 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:49:52,816 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:49:52,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:49:52 BoogieIcfgContainer [2023-08-30 14:49:52,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:49:52,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:49:52,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:49:52,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:49:52,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:49:51" (1/3) ... [2023-08-30 14:49:52,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a9c322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:49:52, skipping insertion in model container [2023-08-30 14:49:52,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:49:52" (2/3) ... [2023-08-30 14:49:52,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a9c322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:49:52, skipping insertion in model container [2023-08-30 14:49:52,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:49:52" (3/3) ... [2023-08-30 14:49:52,823 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-08-30 14:49:52,828 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:49:52,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:49:52,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-30 14:49:52,834 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:49:52,932 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:49:52,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 440 transitions, 904 flow [2023-08-30 14:49:53,063 INFO L130 PetriNetUnfolder]: 32/437 cut-off events. [2023-08-30 14:49:53,064 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:49:53,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 437 events. 32/437 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1255 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-08-30 14:49:53,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 440 transitions, 904 flow [2023-08-30 14:49:53,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 419 transitions, 853 flow [2023-08-30 14:49:53,084 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:49:53,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 419 transitions, 853 flow [2023-08-30 14:49:53,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 419 transitions, 853 flow [2023-08-30 14:49:53,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 419 transitions, 853 flow [2023-08-30 14:49:53,171 INFO L130 PetriNetUnfolder]: 31/419 cut-off events. [2023-08-30 14:49:53,171 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:49:53,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 419 events. 31/419 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 324. Up to 2 conditions per place. [2023-08-30 14:49:53,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 53934 [2023-08-30 14:50:09,550 INFO L134 LiptonReduction]: Checked pairs total: 50359 [2023-08-30 14:50:09,550 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-08-30 14:50:09,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:50:09,574 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;@49edd34a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:50:09,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2023-08-30 14:50:09,577 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:50:09,577 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:50:09,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:09,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:50:09,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:09,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash 58799, now seen corresponding path program 1 times [2023-08-30 14:50:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:09,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446549015] [2023-08-30 14:50:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:09,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:09,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446549015] [2023-08-30 14:50:09,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446549015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:09,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:09,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:50:09,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747389505] [2023-08-30 14:50:09,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:09,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:09,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:09,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 14:50:09,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:09,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:09,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 14:50:09,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:10,874 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2023-08-30 14:50:10,874 INFO L131 PetriNetUnfolder]: For 444/444 co-relation queries the response was YES. [2023-08-30 14:50:10,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 46399 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2023-08-30 14:50:10,908 INFO L137 encePairwiseOnDemand]: 962/975 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-30 14:50:10,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2023-08-30 14:50:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1328 transitions. [2023-08-30 14:50:10,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454017094017094 [2023-08-30 14:50:10,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1328 transitions. [2023-08-30 14:50:10,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1328 transitions. [2023-08-30 14:50:10,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:10,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1328 transitions. [2023-08-30 14:50:10,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.6666666666667) internal successors, (1328), 3 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:10,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:10,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:10,942 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1328 transitions. [2023-08-30 14:50:10,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2023-08-30 14:50:10,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:50:10,955 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2023-08-30 14:50:10,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-30 14:50:10,959 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-08-30 14:50:10,959 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2023-08-30 14:50:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:10,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:10,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:50:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:50:10,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:10,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1824464, now seen corresponding path program 1 times [2023-08-30 14:50:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985460889] [2023-08-30 14:50:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:11,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:11,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985460889] [2023-08-30 14:50:11,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985460889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183721471] [2023-08-30 14:50:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:11,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:11,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:11,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:11,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:50:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:11,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:50:11,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:11,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183721471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:11,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:50:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164697381] [2023-08-30 14:50:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:50:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:50:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:50:11,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 14:50:11,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:11,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:11,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 14:50:11,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:12,165 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2023-08-30 14:50:12,165 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:50:12,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46916 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 4421 conditions per place. [2023-08-30 14:50:12,202 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-30 14:50:12,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 318 flow [2023-08-30 14:50:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:50:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:50:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1719 transitions. [2023-08-30 14:50:12,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44076923076923075 [2023-08-30 14:50:12,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1719 transitions. [2023-08-30 14:50:12,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1719 transitions. [2023-08-30 14:50:12,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:12,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1719 transitions. [2023-08-30 14:50:12,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.75) internal successors, (1719), 4 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:12,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:12,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:12,216 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 4 states and 1719 transitions. [2023-08-30 14:50:12,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 318 flow [2023-08-30 14:50:12,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:12,217 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 96 flow [2023-08-30 14:50:12,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-30 14:50:12,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-08-30 14:50:12,218 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 96 flow [2023-08-30 14:50:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 411.75) internal successors, (1647), 4 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:12,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:12,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:50:12,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:50:12,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:12,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:12,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:12,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1824466, now seen corresponding path program 1 times [2023-08-30 14:50:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193350207] [2023-08-30 14:50:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193350207] [2023-08-30 14:50:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193350207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:12,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298511408] [2023-08-30 14:50:12,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:12,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:12,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:12,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:12,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:50:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:12,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:50:12,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:12,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:50:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:12,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298511408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:50:12,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:50:12,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:50:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652484407] [2023-08-30 14:50:12,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:50:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:50:12,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:50:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:50:12,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 975 [2023-08-30 14:50:12,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:12,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:12,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 975 [2023-08-30 14:50:12,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:14,906 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2023-08-30 14:50:14,907 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2023-08-30 14:50:14,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44892 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1375. Compared 132129 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 35907. Up to 4422 conditions per place. [2023-08-30 14:50:14,979 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2023-08-30 14:50:14,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 182 transitions, 776 flow [2023-08-30 14:50:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:50:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:50:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2651 transitions. [2023-08-30 14:50:14,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45316239316239315 [2023-08-30 14:50:14,984 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2651 transitions. [2023-08-30 14:50:14,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2651 transitions. [2023-08-30 14:50:14,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:14,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2651 transitions. [2023-08-30 14:50:14,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 441.8333333333333) internal successors, (2651), 6 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:14,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:14,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 975.0) internal successors, (6825), 7 states have internal predecessors, (6825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:14,998 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 96 flow. Second operand 6 states and 2651 transitions. [2023-08-30 14:50:14,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 182 transitions, 776 flow [2023-08-30 14:50:14,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:50:15,000 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2023-08-30 14:50:15,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-30 14:50:15,001 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:50:15,001 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2023-08-30 14:50:15,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 412.14285714285717) internal successors, (2885), 7 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:15,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:15,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:50:15,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:50:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 14:50:15,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:15,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1751412444, now seen corresponding path program 1 times [2023-08-30 14:50:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:15,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293669752] [2023-08-30 14:50:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:15,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293669752] [2023-08-30 14:50:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293669752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:15,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:15,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:50:15,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794642096] [2023-08-30 14:50:15,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:15,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:15,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:15,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:15,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:15,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:15,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:15,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:15,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:16,988 INFO L130 PetriNetUnfolder]: 12421/17679 cut-off events. [2023-08-30 14:50:16,988 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-08-30 14:50:17,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35933 conditions, 17679 events. 12421/17679 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 103390 event pairs, 10612 based on Foata normal form. 1/6832 useless extension candidates. Maximal degree in co-relation 35917. Up to 17679 conditions per place. [2023-08-30 14:50:17,055 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 14:50:17,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 213 flow [2023-08-30 14:50:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-08-30 14:50:17,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-08-30 14:50:17,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-08-30 14:50:17,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-08-30 14:50:17,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:17,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-08-30 14:50:17,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:17,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:17,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:17,066 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1270 transitions. [2023-08-30 14:50:17,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 213 flow [2023-08-30 14:50:17,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 203 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:17,068 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 127 flow [2023-08-30 14:50:17,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-30 14:50:17,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 14:50:17,069 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 127 flow [2023-08-30 14:50:17,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 411.6666666666667) internal successors, (1235), 3 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:17,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:17,070 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:50:17,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:50:17,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:17,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:17,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1480223121, now seen corresponding path program 2 times [2023-08-30 14:50:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:17,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448669834] [2023-08-30 14:50:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:17,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:17,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:17,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448669834] [2023-08-30 14:50:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448669834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35843548] [2023-08-30 14:50:17,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:50:17,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:17,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:17,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:50:17,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:50:17,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:50:17,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:50:17,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:50:17,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:17,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35843548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:17,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:50:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461667450] [2023-08-30 14:50:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:50:17,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:17,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:17,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:17,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:17,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:18,999 INFO L130 PetriNetUnfolder]: 12421/17678 cut-off events. [2023-08-30 14:50:18,999 INFO L131 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2023-08-30 14:50:19,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35931 conditions, 17678 events. 12421/17678 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 103395 event pairs, 10612 based on Foata normal form. 1/6831 useless extension candidates. Maximal degree in co-relation 35912. Up to 17678 conditions per place. [2023-08-30 14:50:19,046 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 14:50:19,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 199 flow [2023-08-30 14:50:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1274 transitions. [2023-08-30 14:50:19,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2023-08-30 14:50:19,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1274 transitions. [2023-08-30 14:50:19,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1274 transitions. [2023-08-30 14:50:19,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:19,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1274 transitions. [2023-08-30 14:50:19,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:19,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:19,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:19,055 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 127 flow. Second operand 3 states and 1274 transitions. [2023-08-30 14:50:19,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 199 flow [2023-08-30 14:50:19,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 185 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 14:50:19,056 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 105 flow [2023-08-30 14:50:19,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-30 14:50:19,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-30 14:50:19,057 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 105 flow [2023-08-30 14:50:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.0) internal successors, (1239), 3 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:19,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:19,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:50:19,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:50:19,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:19,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:19,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1482176863, now seen corresponding path program 1 times [2023-08-30 14:50:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:19,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851503269] [2023-08-30 14:50:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:19,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:19,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:19,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851503269] [2023-08-30 14:50:19,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851503269] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:19,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258498131] [2023-08-30 14:50:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:19,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:19,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:19,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:19,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:50:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:19,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:50:19,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:19,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:50:19,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:50:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258498131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:50:19,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:50:19,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:50:19,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546747782] [2023-08-30 14:50:19,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:50:19,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:50:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:50:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:50:19,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 975 [2023-08-30 14:50:19,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:19,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:19,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 975 [2023-08-30 14:50:19,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:20,224 INFO L130 PetriNetUnfolder]: 6211/8842 cut-off events. [2023-08-30 14:50:20,224 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 14:50:20,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 8842 events. 6211/8842 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47095 event pairs, 5306 based on Foata normal form. 2/3420 useless extension candidates. Maximal degree in co-relation 17964. Up to 8840 conditions per place. [2023-08-30 14:50:20,252 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-30 14:50:20,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 187 flow [2023-08-30 14:50:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:50:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:50:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2082 transitions. [2023-08-30 14:50:20,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270769230769231 [2023-08-30 14:50:20,257 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2082 transitions. [2023-08-30 14:50:20,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2082 transitions. [2023-08-30 14:50:20,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:20,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2082 transitions. [2023-08-30 14:50:20,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 416.4) internal successors, (2082), 5 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:20,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:20,266 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:20,266 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 105 flow. Second operand 5 states and 2082 transitions. [2023-08-30 14:50:20,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 187 flow [2023-08-30 14:50:20,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 182 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:20,267 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 116 flow [2023-08-30 14:50:20,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-30 14:50:20,268 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 14:50:20,268 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 116 flow [2023-08-30 14:50:20,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 409.7142857142857) internal successors, (2868), 7 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:20,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:20,269 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 14:50:20,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:50:20,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:20,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:20,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash -862143743, now seen corresponding path program 2 times [2023-08-30 14:50:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419967727] [2023-08-30 14:50:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419967727] [2023-08-30 14:50:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419967727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:50:20,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355203869] [2023-08-30 14:50:20,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:20,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:20,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:20,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:20,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:20,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:20,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:21,131 INFO L130 PetriNetUnfolder]: 4823/6878 cut-off events. [2023-08-30 14:50:21,131 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 14:50:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13993 conditions, 6878 events. 4823/6878 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 35106 event pairs, 4054 based on Foata normal form. 0/2810 useless extension candidates. Maximal degree in co-relation 13981. Up to 6878 conditions per place. [2023-08-30 14:50:21,149 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 14:50:21,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 190 flow [2023-08-30 14:50:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1273 transitions. [2023-08-30 14:50:21,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352136752136752 [2023-08-30 14:50:21,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1273 transitions. [2023-08-30 14:50:21,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1273 transitions. [2023-08-30 14:50:21,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:21,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1273 transitions. [2023-08-30 14:50:21,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 424.3333333333333) internal successors, (1273), 3 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:21,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:21,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:21,158 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 116 flow. Second operand 3 states and 1273 transitions. [2023-08-30 14:50:21,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 190 flow [2023-08-30 14:50:21,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:50:21,159 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 106 flow [2023-08-30 14:50:21,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-30 14:50:21,160 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:50:21,160 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 106 flow [2023-08-30 14:50:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:21,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:21,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 14:50:21,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:50:21,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:21,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -862143740, now seen corresponding path program 1 times [2023-08-30 14:50:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:21,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219373668] [2023-08-30 14:50:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219373668] [2023-08-30 14:50:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219373668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:21,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:21,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:50:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086140147] [2023-08-30 14:50:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:21,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:21,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:21,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:21,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:21,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:21,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:21,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:22,029 INFO L130 PetriNetUnfolder]: 6543/9366 cut-off events. [2023-08-30 14:50:22,029 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-08-30 14:50:22,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19026 conditions, 9366 events. 6543/9366 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 51379 event pairs, 4054 based on Foata normal form. 0/3994 useless extension candidates. Maximal degree in co-relation 19014. Up to 6879 conditions per place. [2023-08-30 14:50:22,058 INFO L137 encePairwiseOnDemand]: 969/975 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-30 14:50:22,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 293 flow [2023-08-30 14:50:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1295 transitions. [2023-08-30 14:50:22,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427350427350427 [2023-08-30 14:50:22,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1295 transitions. [2023-08-30 14:50:22,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1295 transitions. [2023-08-30 14:50:22,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:22,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1295 transitions. [2023-08-30 14:50:22,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 431.6666666666667) internal successors, (1295), 3 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,066 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 106 flow. Second operand 3 states and 1295 transitions. [2023-08-30 14:50:22,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 293 flow [2023-08-30 14:50:22,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:22,067 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 123 flow [2023-08-30 14:50:22,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-30 14:50:22,068 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:50:22,068 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 123 flow [2023-08-30 14:50:22,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:22,069 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:22,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:50:22,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:22,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash -956650431, now seen corresponding path program 1 times [2023-08-30 14:50:22,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911447376] [2023-08-30 14:50:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911447376] [2023-08-30 14:50:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911447376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:22,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:22,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:50:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585063952] [2023-08-30 14:50:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:22,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:22,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:22,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:22,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:22,847 INFO L130 PetriNetUnfolder]: 5923/8490 cut-off events. [2023-08-30 14:50:22,848 INFO L131 PetriNetUnfolder]: For 1444/1444 co-relation queries the response was YES. [2023-08-30 14:50:22,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19037 conditions, 8490 events. 5923/8490 cut-off events. For 1444/1444 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 44694 event pairs, 5026 based on Foata normal form. 0/4234 useless extension candidates. Maximal degree in co-relation 19024. Up to 8490 conditions per place. [2023-08-30 14:50:22,873 INFO L137 encePairwiseOnDemand]: 973/975 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 14:50:22,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 197 flow [2023-08-30 14:50:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-08-30 14:50:22,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-30 14:50:22,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-08-30 14:50:22,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-08-30 14:50:22,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:22,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-08-30 14:50:22,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,882 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 123 flow. Second operand 3 states and 1265 transitions. [2023-08-30 14:50:22,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 197 flow [2023-08-30 14:50:22,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:22,883 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 119 flow [2023-08-30 14:50:22,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-30 14:50:22,884 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:50:22,884 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 119 flow [2023-08-30 14:50:22,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.3333333333333) internal successors, (1237), 3 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:22,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:22,884 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:50:22,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:22,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash -956650378, now seen corresponding path program 1 times [2023-08-30 14:50:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33327928] [2023-08-30 14:50:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33327928] [2023-08-30 14:50:22,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33327928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457161360] [2023-08-30 14:50:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:22,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:22,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:22,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:50:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:23,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:50:23,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:50:23,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457161360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:23,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:23,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 14:50:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072950371] [2023-08-30 14:50:23,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:23,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:23,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:50:23,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:23,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:23,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:23,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:23,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:23,663 INFO L130 PetriNetUnfolder]: 4693/6744 cut-off events. [2023-08-30 14:50:23,663 INFO L131 PetriNetUnfolder]: For 822/822 co-relation queries the response was YES. [2023-08-30 14:50:23,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 6744 events. 4693/6744 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 34195 event pairs, 3924 based on Foata normal form. 0/3588 useless extension candidates. Maximal degree in co-relation 14850. Up to 6744 conditions per place. [2023-08-30 14:50:23,677 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 14:50:23,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 187 flow [2023-08-30 14:50:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2023-08-30 14:50:23,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341880341880342 [2023-08-30 14:50:23,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2023-08-30 14:50:23,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2023-08-30 14:50:23,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:23,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2023-08-30 14:50:23,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:23,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:23,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:23,685 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 119 flow. Second operand 3 states and 1270 transitions. [2023-08-30 14:50:23,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 187 flow [2023-08-30 14:50:23,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 37 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:23,686 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 114 flow [2023-08-30 14:50:23,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-30 14:50:23,687 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 14:50:23,687 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 114 flow [2023-08-30 14:50:23,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:23,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:23,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:23,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:50:23,892 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,SelfDestructingSolverStorable9 [2023-08-30 14:50:23,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:23,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash -956650376, now seen corresponding path program 1 times [2023-08-30 14:50:23,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405395790] [2023-08-30 14:50:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:23,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405395790] [2023-08-30 14:50:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405395790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77305720] [2023-08-30 14:50:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:23,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:23,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:23,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:50:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:24,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:50:24,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:50:24,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:24,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77305720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:24,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:24,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 14:50:24,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870623394] [2023-08-30 14:50:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:24,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:50:24,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:24,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:24,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:24,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:24,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:24,552 INFO L130 PetriNetUnfolder]: 3563/5138 cut-off events. [2023-08-30 14:50:24,552 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2023-08-30 14:50:24,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 5138 events. 3563/5138 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 24764 event pairs, 2918 based on Foata normal form. 0/2950 useless extension candidates. Maximal degree in co-relation 11228. Up to 5138 conditions per place. [2023-08-30 14:50:24,566 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 14:50:24,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 178 flow [2023-08-30 14:50:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1268 transitions. [2023-08-30 14:50:24,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335042735042735 [2023-08-30 14:50:24,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1268 transitions. [2023-08-30 14:50:24,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1268 transitions. [2023-08-30 14:50:24,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:24,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1268 transitions. [2023-08-30 14:50:24,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:24,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:24,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:24,574 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 114 flow. Second operand 3 states and 1268 transitions. [2023-08-30 14:50:24,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 178 flow [2023-08-30 14:50:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 35 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:24,575 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 109 flow [2023-08-30 14:50:24,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-30 14:50:24,576 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2023-08-30 14:50:24,576 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 109 flow [2023-08-30 14:50:24,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:24,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:24,576 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:24,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 14:50:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:24,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:24,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -956650375, now seen corresponding path program 1 times [2023-08-30 14:50:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564971422] [2023-08-30 14:50:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:24,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564971422] [2023-08-30 14:50:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564971422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724526565] [2023-08-30 14:50:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:24,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:24,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:24,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:24,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:50:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:24,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:50:24,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:24,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:50:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724526565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:50:24,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:50:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 14:50:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006350565] [2023-08-30 14:50:25,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:50:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:50:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:50:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:50:25,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:25,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:25,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:25,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:25,930 INFO L130 PetriNetUnfolder]: 6179/8930 cut-off events. [2023-08-30 14:50:25,931 INFO L131 PetriNetUnfolder]: For 454/454 co-relation queries the response was YES. [2023-08-30 14:50:25,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19324 conditions, 8930 events. 6179/8930 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 49607 event pairs, 1778 based on Foata normal form. 0/5246 useless extension candidates. Maximal degree in co-relation 19308. Up to 3243 conditions per place. [2023-08-30 14:50:25,954 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 102 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-30 14:50:25,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 106 transitions, 482 flow [2023-08-30 14:50:25,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:50:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:50:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2154 transitions. [2023-08-30 14:50:25,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44184615384615383 [2023-08-30 14:50:25,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2154 transitions. [2023-08-30 14:50:25,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2154 transitions. [2023-08-30 14:50:25,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:25,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2154 transitions. [2023-08-30 14:50:25,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 430.8) internal successors, (2154), 5 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:25,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:25,966 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 975.0) internal successors, (5850), 6 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:25,966 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 109 flow. Second operand 5 states and 2154 transitions. [2023-08-30 14:50:25,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 106 transitions, 482 flow [2023-08-30 14:50:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 106 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:25,968 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 134 flow [2023-08-30 14:50:25,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-08-30 14:50:25,968 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2023-08-30 14:50:25,968 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 134 flow [2023-08-30 14:50:25,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 412.0) internal successors, (2472), 6 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:25,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:25,969 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:25,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:50:26,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:26,174 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:26,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash 411238806, now seen corresponding path program 1 times [2023-08-30 14:50:26,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:26,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592268172] [2023-08-30 14:50:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:26,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592268172] [2023-08-30 14:50:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592268172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:50:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723000632] [2023-08-30 14:50:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:26,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:26,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:26,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:26,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:26,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:26,861 INFO L130 PetriNetUnfolder]: 4499/6522 cut-off events. [2023-08-30 14:50:26,861 INFO L131 PetriNetUnfolder]: For 3888/3888 co-relation queries the response was YES. [2023-08-30 14:50:26,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15454 conditions, 6522 events. 4499/6522 cut-off events. For 3888/3888 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32558 event pairs, 3682 based on Foata normal form. 0/4210 useless extension candidates. Maximal degree in co-relation 15436. Up to 6522 conditions per place. [2023-08-30 14:50:26,882 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 14:50:26,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 35 transitions, 200 flow [2023-08-30 14:50:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2023-08-30 14:50:26,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328205128205128 [2023-08-30 14:50:26,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2023-08-30 14:50:26,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2023-08-30 14:50:26,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:26,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2023-08-30 14:50:26,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:26,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:26,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:26,889 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 134 flow. Second operand 3 states and 1266 transitions. [2023-08-30 14:50:26,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 35 transitions, 200 flow [2023-08-30 14:50:26,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 35 transitions, 194 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:26,891 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 126 flow [2023-08-30 14:50:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-30 14:50:26,892 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2023-08-30 14:50:26,892 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 126 flow [2023-08-30 14:50:26,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:26,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:26,892 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:26,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:50:26,893 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:26,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 411238849, now seen corresponding path program 1 times [2023-08-30 14:50:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307530875] [2023-08-30 14:50:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:26,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307530875] [2023-08-30 14:50:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307530875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:50:26,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237674752] [2023-08-30 14:50:26,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:26,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:26,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:26,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:26,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:26,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:26,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:26,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:26,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:27,888 INFO L130 PetriNetUnfolder]: 6339/9210 cut-off events. [2023-08-30 14:50:27,888 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2023-08-30 14:50:27,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21152 conditions, 9210 events. 6339/9210 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 50420 event pairs, 3682 based on Foata normal form. 0/6010 useless extension candidates. Maximal degree in co-relation 21132. Up to 6523 conditions per place. [2023-08-30 14:50:27,917 INFO L137 encePairwiseOnDemand]: 971/975 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:50:27,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 312 flow [2023-08-30 14:50:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1279 transitions. [2023-08-30 14:50:27,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372649572649573 [2023-08-30 14:50:27,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1279 transitions. [2023-08-30 14:50:27,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1279 transitions. [2023-08-30 14:50:27,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:27,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1279 transitions. [2023-08-30 14:50:27,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:27,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:27,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:27,924 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 126 flow. Second operand 3 states and 1279 transitions. [2023-08-30 14:50:27,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 312 flow [2023-08-30 14:50:27,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:27,926 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 139 flow [2023-08-30 14:50:27,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-30 14:50:27,927 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-08-30 14:50:27,927 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 139 flow [2023-08-30 14:50:27,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:27,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:27,927 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:50:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:50:27,928 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:27,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash -218007335, now seen corresponding path program 2 times [2023-08-30 14:50:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167030255] [2023-08-30 14:50:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:27,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-30 14:50:27,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:27,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167030255] [2023-08-30 14:50:27,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167030255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:27,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:27,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:50:27,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045918087] [2023-08-30 14:50:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:27,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:27,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:28,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:28,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:28,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:28,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:28,781 INFO L130 PetriNetUnfolder]: 4973/7248 cut-off events. [2023-08-30 14:50:28,781 INFO L131 PetriNetUnfolder]: For 4728/4728 co-relation queries the response was YES. [2023-08-30 14:50:28,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 7248 events. 4973/7248 cut-off events. For 4728/4728 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36908 event pairs, 4108 based on Foata normal form. 172/5640 useless extension candidates. Maximal degree in co-relation 18102. Up to 7248 conditions per place. [2023-08-30 14:50:28,799 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 14:50:28,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 34 transitions, 197 flow [2023-08-30 14:50:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-08-30 14:50:28,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321367521367521 [2023-08-30 14:50:28,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-08-30 14:50:28,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-08-30 14:50:28,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:28,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-08-30 14:50:28,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:28,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:28,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:28,806 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 139 flow. Second operand 3 states and 1264 transitions. [2023-08-30 14:50:28,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 34 transitions, 197 flow [2023-08-30 14:50:28,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 187 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 14:50:28,808 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 121 flow [2023-08-30 14:50:28,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-08-30 14:50:28,809 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:50:28,809 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 121 flow [2023-08-30 14:50:28,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.3333333333333) internal successors, (1243), 3 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:28,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:28,809 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:28,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:50:28,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:28,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:28,810 INFO L85 PathProgramCache]: Analyzing trace with hash -136496192, now seen corresponding path program 1 times [2023-08-30 14:50:28,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:28,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708198347] [2023-08-30 14:50:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:28,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708198347] [2023-08-30 14:50:28,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708198347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:28,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068586327] [2023-08-30 14:50:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:28,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:28,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:28,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:50:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:28,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:50:28,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:50:28,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068586327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:28,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:28,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 14:50:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722900767] [2023-08-30 14:50:28,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:28,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:50:28,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 975 [2023-08-30 14:50:28,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:28,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:28,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 975 [2023-08-30 14:50:28,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:29,531 INFO L130 PetriNetUnfolder]: 3527/5162 cut-off events. [2023-08-30 14:50:29,531 INFO L131 PetriNetUnfolder]: For 1354/1354 co-relation queries the response was YES. [2023-08-30 14:50:29,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12185 conditions, 5162 events. 3527/5162 cut-off events. For 1354/1354 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24842 event pairs, 2814 based on Foata normal form. 0/4230 useless extension candidates. Maximal degree in co-relation 12166. Up to 5162 conditions per place. [2023-08-30 14:50:29,547 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 14:50:29,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 179 flow [2023-08-30 14:50:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1262 transitions. [2023-08-30 14:50:29,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43145299145299143 [2023-08-30 14:50:29,549 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1262 transitions. [2023-08-30 14:50:29,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1262 transitions. [2023-08-30 14:50:29,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:29,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1262 transitions. [2023-08-30 14:50:29,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:29,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:29,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:29,553 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 121 flow. Second operand 3 states and 1262 transitions. [2023-08-30 14:50:29,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 179 flow [2023-08-30 14:50:29,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 32 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:29,554 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 116 flow [2023-08-30 14:50:29,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2023-08-30 14:50:29,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-30 14:50:29,555 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 116 flow [2023-08-30 14:50:29,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 415.0) internal successors, (1245), 3 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:29,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:29,555 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:29,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 14:50:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 14:50:29,760 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:29,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash -136496207, now seen corresponding path program 1 times [2023-08-30 14:50:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117817236] [2023-08-30 14:50:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:29,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117817236] [2023-08-30 14:50:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117817236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954767219] [2023-08-30 14:50:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:29,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:29,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:29,798 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:29,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:50:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:29,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:50:29,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:29,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:29,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954767219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:29,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:29,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:50:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205955547] [2023-08-30 14:50:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:29,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:50:29,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:50:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:50:29,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:29,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:29,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:29,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:29,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:30,448 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2023-08-30 14:50:30,448 INFO L131 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2023-08-30 14:50:30,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10198 conditions, 4358 events. 2967/4358 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 22034 event pairs, 278 based on Foata normal form. 0/3774 useless extension candidates. Maximal degree in co-relation 10178. Up to 1980 conditions per place. [2023-08-30 14:50:30,457 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 59 selfloop transitions, 2 changer transitions 3/64 dead transitions. [2023-08-30 14:50:30,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 333 flow [2023-08-30 14:50:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:50:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:50:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1692 transitions. [2023-08-30 14:50:30,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338461538461538 [2023-08-30 14:50:30,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1692 transitions. [2023-08-30 14:50:30,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1692 transitions. [2023-08-30 14:50:30,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:30,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1692 transitions. [2023-08-30 14:50:30,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:30,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:30,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:30,465 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 116 flow. Second operand 4 states and 1692 transitions. [2023-08-30 14:50:30,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 333 flow [2023-08-30 14:50:30,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:30,466 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 113 flow [2023-08-30 14:50:30,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-30 14:50:30,467 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:50:30,467 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 113 flow [2023-08-30 14:50:30,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.25) internal successors, (1649), 4 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:30,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:30,467 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:30,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 14:50:30,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 14:50:30,685 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:30,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash 65202430, now seen corresponding path program 1 times [2023-08-30 14:50:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299478290] [2023-08-30 14:50:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:30,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:30,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299478290] [2023-08-30 14:50:30,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299478290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:30,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:50:30,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:50:30,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942589582] [2023-08-30 14:50:30,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:30,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:50:30,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:30,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:50:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:50:30,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:30,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:30,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:30,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:31,177 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2023-08-30 14:50:31,177 INFO L131 PetriNetUnfolder]: For 2162/2162 co-relation queries the response was YES. [2023-08-30 14:50:31,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10686 conditions, 4358 events. 2967/4358 cut-off events. For 2162/2162 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20793 event pairs, 1756 based on Foata normal form. 0/4066 useless extension candidates. Maximal degree in co-relation 10666. Up to 3425 conditions per place. [2023-08-30 14:50:31,191 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 14:50:31,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 259 flow [2023-08-30 14:50:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:50:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:50:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1265 transitions. [2023-08-30 14:50:31,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324786324786325 [2023-08-30 14:50:31,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1265 transitions. [2023-08-30 14:50:31,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1265 transitions. [2023-08-30 14:50:31,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:31,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1265 transitions. [2023-08-30 14:50:31,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 975.0) internal successors, (3900), 4 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,197 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 113 flow. Second operand 3 states and 1265 transitions. [2023-08-30 14:50:31,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 259 flow [2023-08-30 14:50:31,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:50:31,198 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 122 flow [2023-08-30 14:50:31,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-08-30 14:50:31,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-08-30 14:50:31,199 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 122 flow [2023-08-30 14:50:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 413.3333333333333) internal successors, (1240), 3 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:50:31,199 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:31,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 14:50:31,199 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2023-08-30 14:50:31,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:50:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2021277161, now seen corresponding path program 1 times [2023-08-30 14:50:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:50:31,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231338742] [2023-08-30 14:50:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:31,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:50:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:31,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:50:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231338742] [2023-08-30 14:50:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231338742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:50:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117006192] [2023-08-30 14:50:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:50:31,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:31,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:50:31,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:50:31,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 14:50:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:50:31,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:50:31,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:50:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 14:50:31,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:50:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117006192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:50:31,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:50:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:50:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707709642] [2023-08-30 14:50:31,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:50:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:50:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:50:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:50:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:50:31,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 410 out of 975 [2023-08-30 14:50:31,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:50:31,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 410 of 975 [2023-08-30 14:50:31,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:50:31,742 INFO L130 PetriNetUnfolder]: 2325/3424 cut-off events. [2023-08-30 14:50:31,742 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-30 14:50:31,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 3424 events. 2325/3424 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15811 event pairs, 616 based on Foata normal form. 0/3424 useless extension candidates. Maximal degree in co-relation 9414. Up to 1265 conditions per place. [2023-08-30 14:50:31,749 INFO L137 encePairwiseOnDemand]: 972/975 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-30 14:50:31,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 336 flow [2023-08-30 14:50:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:50:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:50:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1685 transitions. [2023-08-30 14:50:31,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205128205128207 [2023-08-30 14:50:31,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1685 transitions. [2023-08-30 14:50:31,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1685 transitions. [2023-08-30 14:50:31,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:50:31,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1685 transitions. [2023-08-30 14:50:31,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 421.25) internal successors, (1685), 4 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,756 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 975.0) internal successors, (4875), 5 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,756 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 122 flow. Second operand 4 states and 1685 transitions. [2023-08-30 14:50:31,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 336 flow [2023-08-30 14:50:31,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:50:31,764 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-30 14:50:31,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=975, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-30 14:50:31,765 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-08-30 14:50:31,765 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-30 14:50:31,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 412.75) internal successors, (1651), 4 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:50:31,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2023-08-30 14:50:31,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2023-08-30 14:50:31,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2023-08-30 14:50:31,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2023-08-30 14:50:31,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2023-08-30 14:50:31,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2023-08-30 14:50:31,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2023-08-30 14:50:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2023-08-30 14:50:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2023-08-30 14:50:31,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2023-08-30 14:50:31,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2023-08-30 14:50:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2023-08-30 14:50:31,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2023-08-30 14:50:31,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 14:50:31,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:50:31,979 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:50:31,983 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:50:31,983 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:50:31,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:50:31 BasicIcfg [2023-08-30 14:50:31,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:50:31,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:50:31,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:50:31,987 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:50:31,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:49:52" (3/4) ... [2023-08-30 14:50:31,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:50:31,992 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:50:31,992 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:50:31,992 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 14:50:31,996 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-30 14:50:31,996 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:50:31,996 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:50:31,997 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:50:32,030 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:50:32,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:50:32,031 INFO L158 Benchmark]: Toolchain (without parser) took 40161.65ms. Allocated memory was 71.3MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 47.9MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-08-30 14:50:32,031 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:50:32,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.48ms. Allocated memory is still 71.3MB. Free memory was 47.7MB in the beginning and 34.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:50:32,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.16ms. Allocated memory is still 71.3MB. Free memory was 34.7MB in the beginning and 31.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:50:32,032 INFO L158 Benchmark]: Boogie Preprocessor took 50.83ms. Allocated memory is still 71.3MB. Free memory was 31.9MB in the beginning and 29.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:50:32,032 INFO L158 Benchmark]: RCFGBuilder took 608.62ms. Allocated memory was 71.3MB in the beginning and 113.2MB in the end (delta: 41.9MB). Free memory was 29.8MB in the beginning and 62.6MB in the end (delta: -32.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:50:32,032 INFO L158 Benchmark]: TraceAbstraction took 39166.90ms. Allocated memory was 113.2MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 61.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-08-30 14:50:32,033 INFO L158 Benchmark]: Witness Printer took 44.41ms. Allocated memory is still 3.0GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 14:50:32,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.48ms. Allocated memory is still 71.3MB. Free memory was 47.7MB in the beginning and 34.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.16ms. Allocated memory is still 71.3MB. Free memory was 34.7MB in the beginning and 31.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.83ms. Allocated memory is still 71.3MB. Free memory was 31.9MB in the beginning and 29.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 608.62ms. Allocated memory was 71.3MB in the beginning and 113.2MB in the end (delta: 41.9MB). Free memory was 29.8MB in the beginning and 62.6MB in the end (delta: -32.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 39166.90ms. Allocated memory was 113.2MB in the beginning and 3.0GB in the end (delta: 2.9GB). Free memory was 61.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 44.41ms. Allocated memory is still 3.0GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). 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: 16.5s, 398 PlacesBefore, 54 PlacesAfterwards, 419 TransitionsBefore, 48 TransitionsAfterwards, 53934 CoEnabledTransitionPairs, 8 FixpointIterations, 125 TrivialSequentialCompositions, 289 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 86 ConcurrentYvCompositions, 27 ChoiceCompositions, 535 TotalNumberOfCompositions, 50359 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49677, independent: 49652, independent conditional: 0, independent unconditional: 49652, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31740, independent: 31726, independent conditional: 0, independent unconditional: 31726, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 49677, independent: 17926, independent conditional: 0, independent unconditional: 17926, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 31740, unknown conditional: 0, unknown unconditional: 31740] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 655 locations, 53 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: 39.0s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1249 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 954 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1806 IncrementalHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 51 mSDtfsCounter, 1806 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=14, InterpolantAutomatonStates: 67, 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, 235 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1872 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 32 InterpolantComputations, 16 PerfectInterpolantSequences, 150/168 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 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:50:32,060 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