./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:20:29,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:20:29,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:20:29,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:20:29,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:20:29,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:20:29,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:20:29,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:20:29,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:20:29,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:20:29,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:20:29,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:20:29,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:20:29,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:20:29,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:20:29,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:20:29,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:20:29,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:20:29,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:20:29,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:20:29,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:20:29,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:20:29,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:20:29,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:20:29,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:20:29,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:20:29,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:20:29,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:20:29,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:20:29,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:20:29,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:20:29,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:20:29,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:20:29,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:20:29,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:20:29,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:20:29,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:20:29,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:20:29,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:20:29,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:20:29,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:20:29,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:20:29,512 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:20:29,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:20:29,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:20:29,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:20:29,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:20:29,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:20:29,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:20:29,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:20:29,515 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:20:29,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:20:29,516 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:20:29,517 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:20:29,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:20:29,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:20:29,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:20:29,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:20:29,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:20:29,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:20:29,518 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:20:29,518 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:20:29,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:20:29,518 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:20:29,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:20:29,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:20:29,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:20:29,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:20:29,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:29,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:20:29,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:20:29,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:20:29,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:20:29,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:20:29,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:20:29,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:20:29,521 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:20:29,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:20:29,522 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:20:29,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:20:29,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:20:29,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:20:29,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:20:29,843 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:20:29,843 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:20:29,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-09-01 08:20:30,986 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:20:31,166 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:20:31,167 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-09-01 08:20:31,183 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ec0598d/f07eb255fac94deaaa57facc4492bd56/FLAGea4209cfc [2023-09-01 08:20:31,195 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ec0598d/f07eb255fac94deaaa57facc4492bd56 [2023-09-01 08:20:31,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:20:31,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:20:31,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:31,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:20:31,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:20:31,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acba3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31, skipping insertion in model container [2023-09-01 08:20:31,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:20:31,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:20:31,407 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2023-09-01 08:20:31,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:31,429 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:20:31,466 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2023-09-01 08:20:31,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:20:31,490 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:20:31,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31 WrapperNode [2023-09-01 08:20:31,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:20:31,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:31,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:20:31,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:20:31,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,547 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2023-09-01 08:20:31,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:20:31,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:20:31,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:20:31,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:20:31,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:20:31,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:20:31,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:20:31,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:20:31,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (1/1) ... [2023-09-01 08:20:31,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:20:31,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:31,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:20:31,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:20:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:20:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:20:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:20:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:20:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:20:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:20:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:20:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:20:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:20:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:20:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:20:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:20:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:20:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:20:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:20:31,692 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:20:31,810 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:20:31,812 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:20:32,100 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:20:32,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:20:32,108 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 08:20:32,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:32 BoogieIcfgContainer [2023-09-01 08:20:32,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:20:32,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:20:32,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:20:32,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:20:32,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:20:31" (1/3) ... [2023-09-01 08:20:32,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b764d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:32, skipping insertion in model container [2023-09-01 08:20:32,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:20:31" (2/3) ... [2023-09-01 08:20:32,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b764d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:20:32, skipping insertion in model container [2023-09-01 08:20:32,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:32" (3/3) ... [2023-09-01 08:20:32,124 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-09-01 08:20:32,131 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:20:32,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:20:32,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 08:20:32,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:20:32,237 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:20:32,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 354 flow [2023-09-01 08:20:32,353 INFO L130 PetriNetUnfolder]: 12/162 cut-off events. [2023-09-01 08:20:32,357 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:20:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 12/162 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 159 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-09-01 08:20:32,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 165 transitions, 354 flow [2023-09-01 08:20:32,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2023-09-01 08:20:32,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:20:32,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 144 transitions, 303 flow [2023-09-01 08:20:32,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 144 transitions, 303 flow [2023-09-01 08:20:32,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 144 transitions, 303 flow [2023-09-01 08:20:32,449 INFO L130 PetriNetUnfolder]: 11/144 cut-off events. [2023-09-01 08:20:32,450 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:20:32,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 144 events. 11/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-09-01 08:20:32,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-09-01 08:20:37,271 INFO L134 LiptonReduction]: Checked pairs total: 2954 [2023-09-01 08:20:37,271 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 08:20:37,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:20:37,290 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;@349ab8bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:20:37,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 08:20:37,293 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:20:37,293 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:20:37,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:37,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:20:37,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:37,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash 19618, now seen corresponding path program 1 times [2023-09-01 08:20:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000433880] [2023-09-01 08:20:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:37,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:37,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000433880] [2023-09-01 08:20:37,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000433880] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:37,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:37,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:20:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627796295] [2023-09-01 08:20:37,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:37,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:37,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:37,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-09-01 08:20:37,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:37,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:37,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-09-01 08:20:37,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:38,100 INFO L130 PetriNetUnfolder]: 2441/3187 cut-off events. [2023-09-01 08:20:38,101 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-09-01 08:20:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 3187 events. 2441/3187 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13664 event pairs, 1155 based on Foata normal form. 0/1166 useless extension candidates. Maximal degree in co-relation 2744. Up to 1566 conditions per place. [2023-09-01 08:20:38,127 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-09-01 08:20:38,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2023-09-01 08:20:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-09-01 08:20:38,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524416135881104 [2023-09-01 08:20:38,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-09-01 08:20:38,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-09-01 08:20:38,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:38,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-09-01 08:20:38,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,171 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 494 transitions. [2023-09-01 08:20:38,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2023-09-01 08:20:38,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:38,181 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2023-09-01 08:20:38,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-09-01 08:20:38,187 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-09-01 08:20:38,188 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2023-09-01 08:20:38,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:38,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:38,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:20:38,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:38,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash 609021, now seen corresponding path program 1 times [2023-09-01 08:20:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672855354] [2023-09-01 08:20:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:38,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:38,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:38,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672855354] [2023-09-01 08:20:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672855354] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:38,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905782577] [2023-09-01 08:20:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:38,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:38,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:38,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-09-01 08:20:38,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:38,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-09-01 08:20:38,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:38,616 INFO L130 PetriNetUnfolder]: 2449/3194 cut-off events. [2023-09-01 08:20:38,617 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 08:20:38,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6449 conditions, 3194 events. 2449/3194 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 13667 event pairs, 1156 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 3222. Up to 3134 conditions per place. [2023-09-01 08:20:38,636 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-09-01 08:20:38,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 130 flow [2023-09-01 08:20:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-09-01 08:20:38,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-09-01 08:20:38,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-09-01 08:20:38,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-09-01 08:20:38,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:38,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-09-01 08:20:38,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,644 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 468 transitions. [2023-09-01 08:20:38,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 130 flow [2023-09-01 08:20:38,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:38,646 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 76 flow [2023-09-01 08:20:38,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-09-01 08:20:38,646 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-09-01 08:20:38,647 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 76 flow [2023-09-01 08:20:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:38,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:20:38,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:20:38,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:38,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash 609020, now seen corresponding path program 1 times [2023-09-01 08:20:38,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:38,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607885511] [2023-09-01 08:20:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:38,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607885511] [2023-09-01 08:20:38,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607885511] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140652140] [2023-09-01 08:20:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:38,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:38,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:20:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:38,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:38,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:38,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:38,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140652140] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:38,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:38,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:20:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583758652] [2023-09-01 08:20:38,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:38,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:38,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 314 [2023-09-01 08:20:38,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:38,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:38,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 314 [2023-09-01 08:20:38,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:39,721 INFO L130 PetriNetUnfolder]: 6089/7950 cut-off events. [2023-09-01 08:20:39,721 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-09-01 08:20:39,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16038 conditions, 7950 events. 6089/7950 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 38430 event pairs, 2886 based on Foata normal form. 0/2917 useless extension candidates. Maximal degree in co-relation 16030. Up to 1566 conditions per place. [2023-09-01 08:20:39,784 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2023-09-01 08:20:39,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 125 transitions, 540 flow [2023-09-01 08:20:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:20:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:20:39,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1007 transitions. [2023-09-01 08:20:39,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345010615711253 [2023-09-01 08:20:39,788 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1007 transitions. [2023-09-01 08:20:39,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1007 transitions. [2023-09-01 08:20:39,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:39,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1007 transitions. [2023-09-01 08:20:39,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:39,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:39,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:39,797 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 76 flow. Second operand 6 states and 1007 transitions. [2023-09-01 08:20:39,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 125 transitions, 540 flow [2023-09-01 08:20:39,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:39,801 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2023-09-01 08:20:39,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-09-01 08:20:39,803 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-09-01 08:20:39,803 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2023-09-01 08:20:39,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:39,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:39,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:20:39,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:40,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:40,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:40,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:40,013 INFO L85 PathProgramCache]: Analyzing trace with hash 585731244, now seen corresponding path program 1 times [2023-09-01 08:20:40,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:40,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477086271] [2023-09-01 08:20:40,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:40,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:40,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477086271] [2023-09-01 08:20:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477086271] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:40,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303313983] [2023-09-01 08:20:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:40,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:40,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:40,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:40,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:40,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:41,026 INFO L130 PetriNetUnfolder]: 8331/11112 cut-off events. [2023-09-01 08:20:41,026 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-09-01 08:20:41,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22506 conditions, 11112 events. 8331/11112 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 59819 event pairs, 1930 based on Foata normal form. 0/4577 useless extension candidates. Maximal degree in co-relation 22494. Up to 7078 conditions per place. [2023-09-01 08:20:41,098 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-09-01 08:20:41,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2023-09-01 08:20:41,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-09-01 08:20:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222929936305732 [2023-09-01 08:20:41,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-09-01 08:20:41,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-09-01 08:20:41,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:41,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-09-01 08:20:41,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,106 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 492 transitions. [2023-09-01 08:20:41,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2023-09-01 08:20:41,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:41,109 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2023-09-01 08:20:41,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-09-01 08:20:41,110 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-09-01 08:20:41,111 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2023-09-01 08:20:41,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:41,111 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:20:41,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:20:41,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:41,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:41,113 INFO L85 PathProgramCache]: Analyzing trace with hash 964332385, now seen corresponding path program 2 times [2023-09-01 08:20:41,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:41,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429703335] [2023-09-01 08:20:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:41,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:41,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429703335] [2023-09-01 08:20:41,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429703335] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:41,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250722524] [2023-09-01 08:20:41,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:41,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:41,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:41,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:41,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:20:41,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:41,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:41,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:20:41,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:20:41,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250722524] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:20:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384672905] [2023-09-01 08:20:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:41,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:20:41,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:41,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:41,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:41,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:41,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:42,021 INFO L130 PetriNetUnfolder]: 7076/9551 cut-off events. [2023-09-01 08:20:42,022 INFO L131 PetriNetUnfolder]: For 603/873 co-relation queries the response was YES. [2023-09-01 08:20:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20693 conditions, 9551 events. 7076/9551 cut-off events. For 603/873 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 52026 event pairs, 3890 based on Foata normal form. 271/4642 useless extension candidates. Maximal degree in co-relation 20680. Up to 9381 conditions per place. [2023-09-01 08:20:42,100 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-09-01 08:20:42,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 167 flow [2023-09-01 08:20:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:42,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-09-01 08:20:42,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989384288747346 [2023-09-01 08:20:42,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-09-01 08:20:42,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-09-01 08:20:42,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:42,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-09-01 08:20:42,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:42,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:42,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:42,107 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 470 transitions. [2023-09-01 08:20:42,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 167 flow [2023-09-01 08:20:42,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:42,110 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 97 flow [2023-09-01 08:20:42,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-09-01 08:20:42,111 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-09-01 08:20:42,113 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 97 flow [2023-09-01 08:20:42,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:42,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:42,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:20:42,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:42,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:42,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:42,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash 977799977, now seen corresponding path program 1 times [2023-09-01 08:20:42,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:42,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644064219] [2023-09-01 08:20:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:42,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:42,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644064219] [2023-09-01 08:20:42,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644064219] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:42,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216839147] [2023-09-01 08:20:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:42,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:42,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:42,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:42,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:20:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:42,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:20:42,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:42,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:42,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216839147] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:42,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:42,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:20:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984095478] [2023-09-01 08:20:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:42,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:20:42,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:42,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:20:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:42,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 314 [2023-09-01 08:20:42,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:42,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:42,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 314 [2023-09-01 08:20:42,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:43,231 INFO L130 PetriNetUnfolder]: 6913/9343 cut-off events. [2023-09-01 08:20:43,232 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2023-09-01 08:20:43,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20045 conditions, 9343 events. 6913/9343 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 50159 event pairs, 3591 based on Foata normal form. 52/4466 useless extension candidates. Maximal degree in co-relation 20035. Up to 8410 conditions per place. [2023-09-01 08:20:43,284 INFO L137 encePairwiseOnDemand]: 308/314 looper letters, 59 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-09-01 08:20:43,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 298 flow [2023-09-01 08:20:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:20:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:20:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2023-09-01 08:20:43,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48853503184713376 [2023-09-01 08:20:43,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2023-09-01 08:20:43,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2023-09-01 08:20:43,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:43,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2023-09-01 08:20:43,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:43,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:43,292 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:43,292 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 97 flow. Second operand 5 states and 767 transitions. [2023-09-01 08:20:43,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 298 flow [2023-09-01 08:20:43,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:43,295 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 126 flow [2023-09-01 08:20:43,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-09-01 08:20:43,296 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-09-01 08:20:43,296 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 126 flow [2023-09-01 08:20:43,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:43,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:43,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:43,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:43,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:43,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 251954377, now seen corresponding path program 1 times [2023-09-01 08:20:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794785172] [2023-09-01 08:20:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794785172] [2023-09-01 08:20:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794785172] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372792757] [2023-09-01 08:20:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:43,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:43,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:43,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:43,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:43,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:44,309 INFO L130 PetriNetUnfolder]: 8062/11133 cut-off events. [2023-09-01 08:20:44,310 INFO L131 PetriNetUnfolder]: For 4139/4623 co-relation queries the response was YES. [2023-09-01 08:20:44,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26504 conditions, 11133 events. 8062/11133 cut-off events. For 4139/4623 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 65439 event pairs, 3653 based on Foata normal form. 481/7114 useless extension candidates. Maximal degree in co-relation 26490. Up to 7771 conditions per place. [2023-09-01 08:20:44,384 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-09-01 08:20:44,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 280 flow [2023-09-01 08:20:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-09-01 08:20:44,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191082802547771 [2023-09-01 08:20:44,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-09-01 08:20:44,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-09-01 08:20:44,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:44,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-09-01 08:20:44,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:44,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:44,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:44,390 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 126 flow. Second operand 3 states and 489 transitions. [2023-09-01 08:20:44,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 280 flow [2023-09-01 08:20:44,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 274 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:44,398 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 134 flow [2023-09-01 08:20:44,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=134, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-09-01 08:20:44,399 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-09-01 08:20:44,399 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 134 flow [2023-09-01 08:20:44,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:44,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:44,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:44,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:20:44,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:44,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash -156998660, now seen corresponding path program 1 times [2023-09-01 08:20:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:44,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937357038] [2023-09-01 08:20:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:44,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:44,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937357038] [2023-09-01 08:20:44,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937357038] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:44,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:44,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:44,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872066338] [2023-09-01 08:20:44,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:44,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:44,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:44,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:44,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:20:44,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:44,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:44,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:44,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:44,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:45,094 INFO L130 PetriNetUnfolder]: 7064/9745 cut-off events. [2023-09-01 08:20:45,094 INFO L131 PetriNetUnfolder]: For 3941/4382 co-relation queries the response was YES. [2023-09-01 08:20:45,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25404 conditions, 9745 events. 7064/9745 cut-off events. For 3941/4382 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 57017 event pairs, 402 based on Foata normal form. 399/7196 useless extension candidates. Maximal degree in co-relation 25390. Up to 8812 conditions per place. [2023-09-01 08:20:45,169 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 45 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-09-01 08:20:45,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 268 flow [2023-09-01 08:20:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-09-01 08:20:45,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127388535031847 [2023-09-01 08:20:45,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-09-01 08:20:45,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-09-01 08:20:45,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:45,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-09-01 08:20:45,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:45,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:45,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:45,176 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 134 flow. Second operand 3 states and 483 transitions. [2023-09-01 08:20:45,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 268 flow [2023-09-01 08:20:45,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 49 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:45,184 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 132 flow [2023-09-01 08:20:45,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-09-01 08:20:45,185 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-09-01 08:20:45,185 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 132 flow [2023-09-01 08:20:45,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:45,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:45,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:45,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 08:20:45,186 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:45,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash -156998652, now seen corresponding path program 1 times [2023-09-01 08:20:45,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:45,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191411531] [2023-09-01 08:20:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:45,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:20:45,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:45,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191411531] [2023-09-01 08:20:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191411531] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:45,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802302113] [2023-09-01 08:20:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:45,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:45,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:45,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:45,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:20:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:45,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:20:45,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:45,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802302113] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:45,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:45,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-09-01 08:20:45,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287324416] [2023-09-01 08:20:45,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:45,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:20:45,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:20:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:20:45,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 314 [2023-09-01 08:20:45,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 132 flow. Second operand has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:45,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:45,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 314 [2023-09-01 08:20:45,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:46,773 INFO L130 PetriNetUnfolder]: 7898/11100 cut-off events. [2023-09-01 08:20:46,773 INFO L131 PetriNetUnfolder]: For 6545/7020 co-relation queries the response was YES. [2023-09-01 08:20:46,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 11100 events. 7898/11100 cut-off events. For 6545/7020 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 66616 event pairs, 799 based on Foata normal form. 1044/8741 useless extension candidates. Maximal degree in co-relation 27753. Up to 2405 conditions per place. [2023-09-01 08:20:46,893 INFO L137 encePairwiseOnDemand]: 306/314 looper letters, 207 selfloop transitions, 16 changer transitions 0/225 dead transitions. [2023-09-01 08:20:46,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 1128 flow [2023-09-01 08:20:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 08:20:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 08:20:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2425 transitions. [2023-09-01 08:20:46,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48268312101910826 [2023-09-01 08:20:46,903 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2425 transitions. [2023-09-01 08:20:46,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2425 transitions. [2023-09-01 08:20:46,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:46,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2425 transitions. [2023-09-01 08:20:46,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 151.5625) internal successors, (2425), 16 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:46,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 314.0) internal successors, (5338), 17 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:46,918 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 314.0) internal successors, (5338), 17 states have internal predecessors, (5338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:46,919 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 132 flow. Second operand 16 states and 2425 transitions. [2023-09-01 08:20:46,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 1128 flow [2023-09-01 08:20:46,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 1125 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:46,924 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 232 flow [2023-09-01 08:20:46,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=232, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-09-01 08:20:46,925 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2023-09-01 08:20:46,925 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 232 flow [2023-09-01 08:20:46,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 139.53846153846155) internal successors, (1814), 13 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:46,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:46,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:46,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:47,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:47,132 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:47,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -779348364, now seen corresponding path program 1 times [2023-09-01 08:20:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31874794] [2023-09-01 08:20:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:47,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31874794] [2023-09-01 08:20:47,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31874794] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612150416] [2023-09-01 08:20:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:47,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:47,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:47,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:20:47,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:20:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:47,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:47,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:47,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:47,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612150416] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:47,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:47,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:20:47,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71651924] [2023-09-01 08:20:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:47,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:20:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:20:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:20:47,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:47,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:47,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:47,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:47,867 INFO L130 PetriNetUnfolder]: 7180/10069 cut-off events. [2023-09-01 08:20:47,868 INFO L131 PetriNetUnfolder]: For 26622/27209 co-relation queries the response was YES. [2023-09-01 08:20:47,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30535 conditions, 10069 events. 7180/10069 cut-off events. For 26622/27209 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 58978 event pairs, 796 based on Foata normal form. 561/7856 useless extension candidates. Maximal degree in co-relation 30512. Up to 5460 conditions per place. [2023-09-01 08:20:47,929 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-09-01 08:20:47,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 615 flow [2023-09-01 08:20:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:20:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:20:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-09-01 08:20:47,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135350318471338 [2023-09-01 08:20:47,932 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-09-01 08:20:47,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-09-01 08:20:47,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:47,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-09-01 08:20:47,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,936 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,936 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 232 flow. Second operand 4 states and 645 transitions. [2023-09-01 08:20:47,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 615 flow [2023-09-01 08:20:47,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 563 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-09-01 08:20:47,963 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 204 flow [2023-09-01 08:20:47,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-09-01 08:20:47,964 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-09-01 08:20:47,964 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 204 flow [2023-09-01 08:20:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:47,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:47,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:47,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:20:48,170 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 [2023-09-01 08:20:48,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:48,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash -779348363, now seen corresponding path program 1 times [2023-09-01 08:20:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226635175] [2023-09-01 08:20:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226635175] [2023-09-01 08:20:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226635175] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272566874] [2023-09-01 08:20:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:48,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:48,220 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) [2023-09-01 08:20:48,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:20:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:48,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:48,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:48,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:20:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:48,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272566874] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:20:48,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:20:48,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:20:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190047070] [2023-09-01 08:20:48,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:20:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:20:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:20:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:20:48,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:48,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:48,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:48,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:48,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:49,467 INFO L130 PetriNetUnfolder]: 14479/20302 cut-off events. [2023-09-01 08:20:49,467 INFO L131 PetriNetUnfolder]: For 50217/51368 co-relation queries the response was YES. [2023-09-01 08:20:49,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60097 conditions, 20302 events. 14479/20302 cut-off events. For 50217/51368 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 131610 event pairs, 2375 based on Foata normal form. 1151/16281 useless extension candidates. Maximal degree in co-relation 60074. Up to 6530 conditions per place. [2023-09-01 08:20:49,639 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 129 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2023-09-01 08:20:49,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 896 flow [2023-09-01 08:20:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:20:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:20:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2023-09-01 08:20:49,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196390658174098 [2023-09-01 08:20:49,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 979 transitions. [2023-09-01 08:20:49,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 979 transitions. [2023-09-01 08:20:49,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:49,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 979 transitions. [2023-09-01 08:20:49,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:49,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:49,649 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:49,649 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 204 flow. Second operand 6 states and 979 transitions. [2023-09-01 08:20:49,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 896 flow [2023-09-01 08:20:49,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 893 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:20:49,678 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 237 flow [2023-09-01 08:20:49,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2023-09-01 08:20:49,678 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2023-09-01 08:20:49,679 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 237 flow [2023-09-01 08:20:49,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.85714285714286) internal successors, (1049), 7 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:49,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:49,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:49,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:49,885 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 [2023-09-01 08:20:49,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:49,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1614511956, now seen corresponding path program 1 times [2023-09-01 08:20:49,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:49,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37201951] [2023-09-01 08:20:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:49,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37201951] [2023-09-01 08:20:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37201951] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:49,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:20:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:20:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609041521] [2023-09-01 08:20:49,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:49,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:20:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:20:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:20:49,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 314 [2023-09-01 08:20:49,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:49,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:49,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 314 [2023-09-01 08:20:49,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:50,708 INFO L130 PetriNetUnfolder]: 8850/13277 cut-off events. [2023-09-01 08:20:50,708 INFO L131 PetriNetUnfolder]: For 34088/35505 co-relation queries the response was YES. [2023-09-01 08:20:50,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42485 conditions, 13277 events. 8850/13277 cut-off events. For 34088/35505 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 87304 event pairs, 2106 based on Foata normal form. 1417/13306 useless extension candidates. Maximal degree in co-relation 42459. Up to 9245 conditions per place. [2023-09-01 08:20:50,781 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 62 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-09-01 08:20:50,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 483 flow [2023-09-01 08:20:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:20:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:20:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 619 transitions. [2023-09-01 08:20:50,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928343949044586 [2023-09-01 08:20:50,783 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 619 transitions. [2023-09-01 08:20:50,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 619 transitions. [2023-09-01 08:20:50,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:50,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 619 transitions. [2023-09-01 08:20:50,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:50,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:50,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:50,788 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 237 flow. Second operand 4 states and 619 transitions. [2023-09-01 08:20:50,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 483 flow [2023-09-01 08:20:50,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:20:50,817 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 231 flow [2023-09-01 08:20:50,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2023-09-01 08:20:50,818 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2023-09-01 08:20:50,818 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 231 flow [2023-09-01 08:20:50,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:50,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:50,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-09-01 08:20:50,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:20:50,819 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:50,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:50,819 INFO L85 PathProgramCache]: Analyzing trace with hash -191779604, now seen corresponding path program 2 times [2023-09-01 08:20:50,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993082382] [2023-09-01 08:20:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:20:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993082382] [2023-09-01 08:20:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993082382] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585806687] [2023-09-01 08:20:50,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:50,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:50,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:50,873 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) [2023-09-01 08:20:50,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:20:50,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:50,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:50,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:20:50,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585806687] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:50,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 08:20:50,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235472561] [2023-09-01 08:20:50,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:50,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:50,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:50,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:50,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:20:50,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:50,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:50,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:50,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:50,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:51,717 INFO L130 PetriNetUnfolder]: 7514/10855 cut-off events. [2023-09-01 08:20:51,718 INFO L131 PetriNetUnfolder]: For 41015/42240 co-relation queries the response was YES. [2023-09-01 08:20:51,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 10855 events. 7514/10855 cut-off events. For 41015/42240 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 67139 event pairs, 5211 based on Foata normal form. 1913/10974 useless extension candidates. Maximal degree in co-relation 29326. Up to 10780 conditions per place. [2023-09-01 08:20:51,760 INFO L137 encePairwiseOnDemand]: 311/314 looper letters, 34 selfloop transitions, 1 changer transitions 3/43 dead transitions. [2023-09-01 08:20:51,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 43 transitions, 281 flow [2023-09-01 08:20:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-09-01 08:20:51,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49469214437367304 [2023-09-01 08:20:51,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-09-01 08:20:51,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-09-01 08:20:51,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:51,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-09-01 08:20:51,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:51,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:51,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:51,766 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 231 flow. Second operand 3 states and 466 transitions. [2023-09-01 08:20:51,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 43 transitions, 281 flow [2023-09-01 08:20:51,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 43 transitions, 263 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-09-01 08:20:51,778 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 182 flow [2023-09-01 08:20:51,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-09-01 08:20:51,779 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 28 predicate places. [2023-09-01 08:20:51,779 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 182 flow [2023-09-01 08:20:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:51,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:20:51,780 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:51,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:51,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-09-01 08:20:51,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:20:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1026627466, now seen corresponding path program 2 times [2023-09-01 08:20:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:20:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696261698] [2023-09-01 08:20:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:20:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:20:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:20:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:20:52,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:20:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696261698] [2023-09-01 08:20:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696261698] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:20:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255572741] [2023-09-01 08:20:52,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:20:52,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:20:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:20:52,059 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) [2023-09-01 08:20:52,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:20:52,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:20:52,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:20:52,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:20:52,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:20:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:20:52,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:20:52,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255572741] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:20:52,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:20:52,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 08:20:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676655695] [2023-09-01 08:20:52,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:20:52,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:20:52,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:20:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:20:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:20:52,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 314 [2023-09-01 08:20:52,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:52,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:20:52,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 314 [2023-09-01 08:20:52,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:20:52,485 INFO L130 PetriNetUnfolder]: 3214/4611 cut-off events. [2023-09-01 08:20:52,485 INFO L131 PetriNetUnfolder]: For 7504/8281 co-relation queries the response was YES. [2023-09-01 08:20:52,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13630 conditions, 4611 events. 3214/4611 cut-off events. For 7504/8281 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24317 event pairs, 2131 based on Foata normal form. 1041/4936 useless extension candidates. Maximal degree in co-relation 13609. Up to 4564 conditions per place. [2023-09-01 08:20:52,499 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-09-01 08:20:52,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 39 transitions, 240 flow [2023-09-01 08:20:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:20:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:20:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-09-01 08:20:52,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893842887473461 [2023-09-01 08:20:52,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-09-01 08:20:52,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-09-01 08:20:52,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:20:52,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-09-01 08:20:52,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:52,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:52,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:52,504 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 182 flow. Second operand 3 states and 461 transitions. [2023-09-01 08:20:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 39 transitions, 240 flow [2023-09-01 08:20:52,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 39 transitions, 221 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-09-01 08:20:52,514 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-09-01 08:20:52,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-09-01 08:20:52,515 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-09-01 08:20:52,515 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-09-01 08:20:52,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:20:52,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-09-01 08:20:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-09-01 08:20:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-09-01 08:20:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-09-01 08:20:52,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-09-01 08:20:52,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-09-01 08:20:52,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-09-01 08:20:52,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-09-01 08:20:52,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-09-01 08:20:52,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-09-01 08:20:52,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-09-01 08:20:52,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-09-01 08:20:52,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-09-01 08:20:52,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-09-01 08:20:52,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-09-01 08:20:52,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-09-01 08:20:52,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-09-01 08:20:52,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:20:52,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:20:52,730 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:20:52,734 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:20:52,734 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:20:52,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:20:52 BasicIcfg [2023-09-01 08:20:52,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:20:52,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:20:52,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:20:52,739 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:20:52,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:20:32" (3/4) ... [2023-09-01 08:20:52,741 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:20:52,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:20:52,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:20:52,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:20:52,750 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-09-01 08:20:52,750 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:20:52,751 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:20:52,751 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:20:52,791 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:20:52,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:20:52,792 INFO L158 Benchmark]: Toolchain (without parser) took 21594.77ms. Allocated memory was 79.7MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 60.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 544.0MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,793 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:20:52,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.12ms. Allocated memory is still 79.7MB. Free memory was 60.3MB in the beginning and 49.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.81ms. Allocated memory is still 79.7MB. Free memory was 49.1MB in the beginning and 47.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,794 INFO L158 Benchmark]: Boogie Preprocessor took 55.17ms. Allocated memory is still 79.7MB. Free memory was 47.1MB in the beginning and 45.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,794 INFO L158 Benchmark]: RCFGBuilder took 510.40ms. Allocated memory is still 79.7MB. Free memory was 45.5MB in the beginning and 50.3MB in the end (delta: -4.8MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,794 INFO L158 Benchmark]: TraceAbstraction took 20622.85ms. Allocated memory was 79.7MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 49.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 529.6MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,794 INFO L158 Benchmark]: Witness Printer took 52.93ms. Allocated memory is still 2.4GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:20:52,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.12ms. Allocated memory is still 79.7MB. Free memory was 60.3MB in the beginning and 49.1MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.81ms. Allocated memory is still 79.7MB. Free memory was 49.1MB in the beginning and 47.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.17ms. Allocated memory is still 79.7MB. Free memory was 47.1MB in the beginning and 45.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.40ms. Allocated memory is still 79.7MB. Free memory was 45.5MB in the beginning and 50.3MB in the end (delta: -4.8MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 20622.85ms. Allocated memory was 79.7MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 49.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 529.6MB. Max. memory is 16.1GB. * Witness Printer took 52.93ms. Allocated memory is still 2.4GB. Free memory was 1.8GB in the beginning and 1.8GB 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: 4.9s, 143 PlacesBefore, 36 PlacesAfterwards, 144 TransitionsBefore, 30 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 2954 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2784, independent: 2760, independent conditional: 0, independent unconditional: 2760, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1434, independent: 1425, independent conditional: 0, independent unconditional: 1425, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2784, independent: 1335, independent conditional: 0, independent unconditional: 1335, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1434, unknown conditional: 0, unknown unconditional: 1434] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: 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, 202 locations, 17 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: 20.5s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1465 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1275 mSDsluCounter, 209 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 177 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1857 IncrementalHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 32 mSDtfsCounter, 1857 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=11, InterpolantAutomatonStates: 65, 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, 1.1s InterpolantComputationTime, 149 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1092 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 37/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:20:52,824 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