./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-inc-subseq.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 cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:47:16,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:47:16,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:47:16,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:47:16,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:47:16,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:47:16,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:47:16,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:47:16,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:47:16,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:47:16,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:47:16,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:47:16,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:47:16,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:47:16,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:47:16,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:47:16,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:47:16,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:47:16,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:47:16,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:47:16,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:47:16,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:47:16,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:47:16,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:47:16,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:47:16,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:47:16,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:47:16,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:47:16,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:47:16,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:47:16,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:47:16,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:47:16,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:47:16,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:47:16,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:47:16,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:47:16,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:47:16,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:47:16,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:47:16,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:47:16,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:47:16,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:47:16,492 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:47:16,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:47:16,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:47:16,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:47:16,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:47:16,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:47:16,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:47:16,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:47:16,496 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:47:16,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:47:16,497 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:47:16,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:47:16,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:47:16,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:47:16,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:47:16,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:47:16,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:47:16,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:47:16,498 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:47:16,498 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:47:16,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:47:16,499 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:47:16,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:47:16,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:47:16,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:47:16,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:47:16,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:47:16,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:47:16,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:47:16,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:47:16,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:47:16,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:47:16,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:47:16,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:47:16,501 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:47:16,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:47:16,502 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:47:16,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd94157895dc71e9f24fce5dbc4a71d4e4b55c4da9be28372139a3001decae0a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:47:16,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:47:16,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:47:16,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:47:16,821 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:47:16,821 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:47:16,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2023-08-30 11:47:17,954 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:47:18,156 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:47:18,157 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2023-08-30 11:47:18,167 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61aa34899/a5f06fc5681843b3a8e3aa1d2555c321/FLAG2008eea35 [2023-08-30 11:47:18,190 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61aa34899/a5f06fc5681843b3a8e3aa1d2555c321 [2023-08-30 11:47:18,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:47:18,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:47:18,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:47:18,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:47:18,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:47:18,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a74404f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18, skipping insertion in model container [2023-08-30 11:47:18,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:47:18,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:47:18,420 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-inc-subseq.wvr.c[2924,2937] [2023-08-30 11:47:18,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:47:18,441 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:47:18,474 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-inc-subseq.wvr.c[2924,2937] [2023-08-30 11:47:18,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:47:18,490 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:47:18,491 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:47:18,497 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:47:18,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18 WrapperNode [2023-08-30 11:47:18,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:47:18,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:47:18,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:47:18,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:47:18,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,556 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 206 [2023-08-30 11:47:18,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:47:18,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:47:18,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:47:18,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:47:18,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:47:18,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:47:18,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:47:18,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:47:18,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (1/1) ... [2023-08-30 11:47:18,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:47:18,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:18,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:47:18,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:47:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:47:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:47:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:47:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:47:18,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:47:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:47:18,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:47:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:47:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:47:18,690 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:47:18,778 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:47:18,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:47:19,195 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:47:19,326 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:47:19,326 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 11:47:19,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:47:19 BoogieIcfgContainer [2023-08-30 11:47:19,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:47:19,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:47:19,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:47:19,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:47:19,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:47:18" (1/3) ... [2023-08-30 11:47:19,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309c7baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:47:19, skipping insertion in model container [2023-08-30 11:47:19,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:47:18" (2/3) ... [2023-08-30 11:47:19,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309c7baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:47:19, skipping insertion in model container [2023-08-30 11:47:19,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:47:19" (3/3) ... [2023-08-30 11:47:19,339 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2023-08-30 11:47:19,345 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:47:19,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:47:19,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 11:47:19,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:47:19,443 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:47:19,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 11:47:19,565 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2023-08-30 11:47:19,565 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:47:19,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-08-30 11:47:19,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 11:47:19,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 172 transitions, 353 flow [2023-08-30 11:47:19,582 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:47:19,590 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 172 transitions, 353 flow [2023-08-30 11:47:19,593 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 172 transitions, 353 flow [2023-08-30 11:47:19,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 353 flow [2023-08-30 11:47:19,635 INFO L130 PetriNetUnfolder]: 14/172 cut-off events. [2023-08-30 11:47:19,636 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:47:19,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 172 events. 14/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-08-30 11:47:19,638 INFO L119 LiptonReduction]: Number of co-enabled transitions 942 [2023-08-30 11:47:24,746 INFO L134 LiptonReduction]: Checked pairs total: 1454 [2023-08-30 11:47:24,747 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-30 11:47:24,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:47:24,764 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;@56205ad9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:47:24,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 11:47:24,767 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:47:24,767 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:47:24,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:24,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:47:24,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:24,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash 25153, now seen corresponding path program 1 times [2023-08-30 11:47:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425252901] [2023-08-30 11:47:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425252901] [2023-08-30 11:47:25,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425252901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:25,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:25,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531676187] [2023-08-30 11:47:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:25,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:25,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:25,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:25,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:25,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:25,250 INFO L130 PetriNetUnfolder]: 177/288 cut-off events. [2023-08-30 11:47:25,250 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 11:47:25,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 288 events. 177/288 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1087 event pairs, 106 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 524. Up to 284 conditions per place. [2023-08-30 11:47:25,255 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 25 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 11:47:25,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 115 flow [2023-08-30 11:47:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 11:47:25,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-08-30 11:47:25,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 11:47:25,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 11:47:25,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:25,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 11:47:25,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,293 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 71 flow. Second operand 3 states and 510 transitions. [2023-08-30 11:47:25,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 115 flow [2023-08-30 11:47:25,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:47:25,297 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 60 flow [2023-08-30 11:47:25,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-30 11:47:25,301 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-30 11:47:25,302 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 60 flow [2023-08-30 11:47:25,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:25,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:47:25,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:47:25,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:25,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 25172, now seen corresponding path program 1 times [2023-08-30 11:47:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:25,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584520790] [2023-08-30 11:47:25,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:25,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:25,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584520790] [2023-08-30 11:47:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584520790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:25,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761421138] [2023-08-30 11:47:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:25,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:25,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:25,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:25,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:25,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:25,514 INFO L130 PetriNetUnfolder]: 353/573 cut-off events. [2023-08-30 11:47:25,514 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:47:25,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 573 events. 353/573 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2585 event pairs, 212 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 1170. Up to 285 conditions per place. [2023-08-30 11:47:25,520 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 45 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-30 11:47:25,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 208 flow [2023-08-30 11:47:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-30 11:47:25,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2023-08-30 11:47:25,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-30 11:47:25,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-30 11:47:25,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:25,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-30 11:47:25,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,530 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 60 flow. Second operand 3 states and 531 transitions. [2023-08-30 11:47:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 208 flow [2023-08-30 11:47:25,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 50 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:25,532 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 91 flow [2023-08-30 11:47:25,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-08-30 11:47:25,533 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-08-30 11:47:25,533 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 91 flow [2023-08-30 11:47:25,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:25,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:47:25,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:47:25,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:25,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 781045, now seen corresponding path program 1 times [2023-08-30 11:47:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:25,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938444365] [2023-08-30 11:47:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:25,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:25,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:25,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938444365] [2023-08-30 11:47:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938444365] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245548927] [2023-08-30 11:47:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:25,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:25,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:25,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:47:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:25,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:25,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:25,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245548927] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:25,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:25,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 11:47:25,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245388353] [2023-08-30 11:47:25,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:25,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 11:47:25,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 11:47:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:47:25,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:25,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:25,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:25,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:25,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:26,143 INFO L130 PetriNetUnfolder]: 881/1428 cut-off events. [2023-08-30 11:47:26,144 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:47:26,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 1428 events. 881/1428 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7443 event pairs, 530 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 2942. Up to 285 conditions per place. [2023-08-30 11:47:26,151 INFO L137 encePairwiseOnDemand]: 364/370 looper letters, 105 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2023-08-30 11:47:26,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 119 transitions, 545 flow [2023-08-30 11:47:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:47:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:47:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1084 transitions. [2023-08-30 11:47:26,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882882882882883 [2023-08-30 11:47:26,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1084 transitions. [2023-08-30 11:47:26,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1084 transitions. [2023-08-30 11:47:26,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:26,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1084 transitions. [2023-08-30 11:47:26,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,164 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 370.0) internal successors, (2590), 7 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,164 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 91 flow. Second operand 6 states and 1084 transitions. [2023-08-30 11:47:26,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 119 transitions, 545 flow [2023-08-30 11:47:26,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 119 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:26,167 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 176 flow [2023-08-30 11:47:26,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-08-30 11:47:26,168 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 11:47:26,168 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 176 flow [2023-08-30 11:47:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:26,169 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:47:26,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:26,375 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 [2023-08-30 11:47:26,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:26,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:26,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1793983124, now seen corresponding path program 2 times [2023-08-30 11:47:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:26,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464337570] [2023-08-30 11:47:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:26,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464337570] [2023-08-30 11:47:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464337570] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691257802] [2023-08-30 11:47:26,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:26,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:26,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:26,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:47:26,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:26,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:26,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:26,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:47:26,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691257802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:47:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041485711] [2023-08-30 11:47:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:47:26,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 370 [2023-08-30 11:47:26,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 176 flow. Second operand has 3 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) [2023-08-30 11:47:26,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:26,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 370 [2023-08-30 11:47:26,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:26,781 INFO L130 PetriNetUnfolder]: 881/1427 cut-off events. [2023-08-30 11:47:26,781 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 11:47:26,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2971 conditions, 1427 events. 881/1427 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7680 event pairs, 530 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 2959. Up to 1402 conditions per place. [2023-08-30 11:47:26,788 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 31 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-30 11:47:26,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 240 flow [2023-08-30 11:47:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 11:47:26,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46126126126126127 [2023-08-30 11:47:26,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 11:47:26,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 11:47:26,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:26,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 11:47:26,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:26,795 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 176 flow. Second operand 3 states and 512 transitions. [2023-08-30 11:47:26,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 240 flow [2023-08-30 11:47:26,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 221 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:26,798 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 159 flow [2023-08-30 11:47:26,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-08-30 11:47:26,799 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 11:47:26,799 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 159 flow [2023-08-30 11:47:26,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 11:47:26,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:26,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:47:26,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:27,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:47:27,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:27,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1806151333, now seen corresponding path program 1 times [2023-08-30 11:47:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358862025] [2023-08-30 11:47:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:27,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358862025] [2023-08-30 11:47:27,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358862025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:27,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:27,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:47:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307036362] [2023-08-30 11:47:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:27,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:47:27,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 370 [2023-08-30 11:47:27,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:27,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 370 [2023-08-30 11:47:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:27,314 INFO L130 PetriNetUnfolder]: 1651/2607 cut-off events. [2023-08-30 11:47:27,314 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 11:47:27,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 2607 events. 1651/2607 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 15194 event pairs, 425 based on Foata normal form. 0/1532 useless extension candidates. Maximal degree in co-relation 5374. Up to 1556 conditions per place. [2023-08-30 11:47:27,325 INFO L137 encePairwiseOnDemand]: 366/370 looper letters, 51 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-30 11:47:27,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 300 flow [2023-08-30 11:47:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-30 11:47:27,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846846846846847 [2023-08-30 11:47:27,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-30 11:47:27,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-30 11:47:27,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:27,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-30 11:47:27,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,332 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 159 flow. Second operand 3 states and 538 transitions. [2023-08-30 11:47:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 300 flow [2023-08-30 11:47:27,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:47:27,335 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 161 flow [2023-08-30 11:47:27,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-08-30 11:47:27,335 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-30 11:47:27,335 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 161 flow [2023-08-30 11:47:27,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:27,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:47:27,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:47:27,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:27,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:27,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1806148252, now seen corresponding path program 1 times [2023-08-30 11:47:27,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:27,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647266992] [2023-08-30 11:47:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:27,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:27,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647266992] [2023-08-30 11:47:27,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647266992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:27,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:47:27,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:47:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062410299] [2023-08-30 11:47:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:27,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:47:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:47:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:47:27,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 370 [2023-08-30 11:47:27,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:27,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 370 [2023-08-30 11:47:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:27,771 INFO L130 PetriNetUnfolder]: 1976/3303 cut-off events. [2023-08-30 11:47:27,771 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-30 11:47:27,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 3303 events. 1976/3303 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 21524 event pairs, 1320 based on Foata normal form. 60/2097 useless extension candidates. Maximal degree in co-relation 7300. Up to 2586 conditions per place. [2023-08-30 11:47:27,786 INFO L137 encePairwiseOnDemand]: 363/370 looper letters, 52 selfloop transitions, 3 changer transitions 4/60 dead transitions. [2023-08-30 11:47:27,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 361 flow [2023-08-30 11:47:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:47:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:47:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2023-08-30 11:47:27,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2023-08-30 11:47:27,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2023-08-30 11:47:27,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2023-08-30 11:47:27,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:27,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2023-08-30 11:47:27,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,793 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 161 flow. Second operand 4 states and 655 transitions. [2023-08-30 11:47:27,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 361 flow [2023-08-30 11:47:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:27,796 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 174 flow [2023-08-30 11:47:27,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 11:47:27,797 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-30 11:47:27,797 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 174 flow [2023-08-30 11:47:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:27,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:27,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:47:27,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:27,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash -208932163, now seen corresponding path program 1 times [2023-08-30 11:47:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62285654] [2023-08-30 11:47:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62285654] [2023-08-30 11:47:27,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62285654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:27,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972205247] [2023-08-30 11:47:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:27,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:27,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:27,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:47:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:27,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:27,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:28,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972205247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:28,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 11:47:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685171390] [2023-08-30 11:47:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:47:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:47:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:47:28,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 370 [2023-08-30 11:47:28,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:28,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:28,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 370 [2023-08-30 11:47:28,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:28,333 INFO L130 PetriNetUnfolder]: 1474/2467 cut-off events. [2023-08-30 11:47:28,333 INFO L131 PetriNetUnfolder]: For 270/294 co-relation queries the response was YES. [2023-08-30 11:47:28,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 2467 events. 1474/2467 cut-off events. For 270/294 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 15347 event pairs, 972 based on Foata normal form. 2/1772 useless extension candidates. Maximal degree in co-relation 5976. Up to 2430 conditions per place. [2023-08-30 11:47:28,345 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 30 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-30 11:47:28,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 244 flow [2023-08-30 11:47:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:47:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:47:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-30 11:47:28,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43445945945945946 [2023-08-30 11:47:28,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-30 11:47:28,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-30 11:47:28,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:28,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-30 11:47:28,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:28,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:28,354 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 370.0) internal successors, (1850), 5 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:28,355 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 174 flow. Second operand 4 states and 643 transitions. [2023-08-30 11:47:28,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 244 flow [2023-08-30 11:47:28,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 238 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:28,359 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 186 flow [2023-08-30 11:47:28,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-30 11:47:28,360 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-30 11:47:28,360 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 186 flow [2023-08-30 11:47:28,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:28,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:28,361 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:47:28,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:28,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:28,567 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:28,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash 157761778, now seen corresponding path program 1 times [2023-08-30 11:47:28,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:28,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424879444] [2023-08-30 11:47:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:28,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424879444] [2023-08-30 11:47:28,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424879444] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:28,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539556924] [2023-08-30 11:47:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:28,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:28,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:28,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:28,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:47:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:28,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 11:47:28,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:28,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539556924] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:28,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 11:47:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616343024] [2023-08-30 11:47:28,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:28,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:47:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:47:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:47:28,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:28,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 186 flow. Second operand has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:28,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:28,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:28,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:29,633 INFO L130 PetriNetUnfolder]: 3682/6157 cut-off events. [2023-08-30 11:47:29,633 INFO L131 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2023-08-30 11:47:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 6157 events. 3682/6157 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 41294 event pairs, 2430 based on Foata normal form. 12/4496 useless extension candidates. Maximal degree in co-relation 14924. Up to 1581 conditions per place. [2023-08-30 11:47:29,673 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 204 selfloop transitions, 31 changer transitions 0/236 dead transitions. [2023-08-30 11:47:29,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 236 transitions, 1316 flow [2023-08-30 11:47:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 11:47:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 11:47:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2151 transitions. [2023-08-30 11:47:29,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48445945945945945 [2023-08-30 11:47:29,679 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2151 transitions. [2023-08-30 11:47:29,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2151 transitions. [2023-08-30 11:47:29,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:29,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2151 transitions. [2023-08-30 11:47:29,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 179.25) internal successors, (2151), 12 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:29,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:29,691 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 370.0) internal successors, (4810), 13 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:29,691 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 186 flow. Second operand 12 states and 2151 transitions. [2023-08-30 11:47:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 236 transitions, 1316 flow [2023-08-30 11:47:29,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 236 transitions, 1287 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:47:29,699 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 385 flow [2023-08-30 11:47:29,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2023-08-30 11:47:29,701 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 11:47:29,701 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 385 flow [2023-08-30 11:47:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 161.15384615384616) internal successors, (2095), 13 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:29,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:29,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:29,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:29,907 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:29,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2114722249, now seen corresponding path program 1 times [2023-08-30 11:47:29,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:29,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756870713] [2023-08-30 11:47:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:29,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:29,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756870713] [2023-08-30 11:47:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756870713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753033042] [2023-08-30 11:47:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:29,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:29,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:30,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:47:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:30,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:30,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:47:30,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:30,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753033042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:30,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:30,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:47:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370964928] [2023-08-30 11:47:30,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:30,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:47:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:47:30,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:47:30,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 370 [2023-08-30 11:47:30,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:30,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:30,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 370 [2023-08-30 11:47:30,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:30,551 INFO L130 PetriNetUnfolder]: 2642/4617 cut-off events. [2023-08-30 11:47:30,551 INFO L131 PetriNetUnfolder]: For 598/598 co-relation queries the response was YES. [2023-08-30 11:47:30,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 4617 events. 2642/4617 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31286 event pairs, 1790 based on Foata normal form. 0/3807 useless extension candidates. Maximal degree in co-relation 10899. Up to 4537 conditions per place. [2023-08-30 11:47:30,577 INFO L137 encePairwiseOnDemand]: 367/370 looper letters, 49 selfloop transitions, 1 changer transitions 3/54 dead transitions. [2023-08-30 11:47:30,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 483 flow [2023-08-30 11:47:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 11:47:30,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2023-08-30 11:47:30,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 11:47:30,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 11:47:30,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:30,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 11:47:30,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:30,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:30,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:30,583 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 385 flow. Second operand 3 states and 516 transitions. [2023-08-30 11:47:30,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 483 flow [2023-08-30 11:47:30,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 393 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-30 11:47:30,588 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 282 flow [2023-08-30 11:47:30,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2023-08-30 11:47:30,588 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-30 11:47:30,588 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 282 flow [2023-08-30 11:47:30,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:30,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:30,589 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:30,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:30,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:30,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:30,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1234282000, now seen corresponding path program 1 times [2023-08-30 11:47:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554070470] [2023-08-30 11:47:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:30,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:47:30,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:30,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554070470] [2023-08-30 11:47:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554070470] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056891515] [2023-08-30 11:47:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:30,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:30,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:30,859 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:30,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:47:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:30,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:47:30,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:31,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:31,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056891515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:31,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:31,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-30 11:47:31,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397216933] [2023-08-30 11:47:31,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:31,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:47:31,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:47:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:47:31,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 370 [2023-08-30 11:47:31,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:31,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:31,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 370 [2023-08-30 11:47:31,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:31,936 INFO L130 PetriNetUnfolder]: 2712/4581 cut-off events. [2023-08-30 11:47:31,937 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-08-30 11:47:31,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11011 conditions, 4581 events. 2712/4581 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 29277 event pairs, 487 based on Foata normal form. 16/4015 useless extension candidates. Maximal degree in co-relation 10988. Up to 1836 conditions per place. [2023-08-30 11:47:31,970 INFO L137 encePairwiseOnDemand]: 361/370 looper letters, 54 selfloop transitions, 17 changer transitions 19/91 dead transitions. [2023-08-30 11:47:31,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 571 flow [2023-08-30 11:47:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:47:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:47:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1555 transitions. [2023-08-30 11:47:31,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027027027027025 [2023-08-30 11:47:31,974 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1555 transitions. [2023-08-30 11:47:31,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1555 transitions. [2023-08-30 11:47:31,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:31,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1555 transitions. [2023-08-30 11:47:31,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.5) internal successors, (1555), 10 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:31,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:31,984 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 370.0) internal successors, (4070), 11 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:31,984 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 282 flow. Second operand 10 states and 1555 transitions. [2023-08-30 11:47:31,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 571 flow [2023-08-30 11:47:31,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 570 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:47:31,989 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 333 flow [2023-08-30 11:47:31,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=333, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2023-08-30 11:47:31,991 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-30 11:47:31,991 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 333 flow [2023-08-30 11:47:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 150.92307692307693) internal successors, (1962), 13 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:31,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:31,992 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 11:47:32,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:32,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:32,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2075999010, now seen corresponding path program 2 times [2023-08-30 11:47:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833009744] [2023-08-30 11:47:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:47:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833009744] [2023-08-30 11:47:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833009744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065585016] [2023-08-30 11:47:32,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:32,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:32,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:32,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:47:32,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:32,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:32,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:47:32,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 11:47:32,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:47:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 11:47:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065585016] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:47:32,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:47:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-08-30 11:47:32,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423985065] [2023-08-30 11:47:32,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:47:32,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:47:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:47:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:47:32,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 370 [2023-08-30 11:47:32,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:32,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:32,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 370 [2023-08-30 11:47:32,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:33,016 INFO L130 PetriNetUnfolder]: 3594/5906 cut-off events. [2023-08-30 11:47:33,016 INFO L131 PetriNetUnfolder]: For 1887/1905 co-relation queries the response was YES. [2023-08-30 11:47:33,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 5906 events. 3594/5906 cut-off events. For 1887/1905 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37962 event pairs, 441 based on Foata normal form. 0/5177 useless extension candidates. Maximal degree in co-relation 16111. Up to 1638 conditions per place. [2023-08-30 11:47:33,039 INFO L137 encePairwiseOnDemand]: 365/370 looper letters, 34 selfloop transitions, 1 changer transitions 55/90 dead transitions. [2023-08-30 11:47:33,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 625 flow [2023-08-30 11:47:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:47:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:47:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1188 transitions. [2023-08-30 11:47:33,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586872586872587 [2023-08-30 11:47:33,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1188 transitions. [2023-08-30 11:47:33,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1188 transitions. [2023-08-30 11:47:33,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:33,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1188 transitions. [2023-08-30 11:47:33,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.71428571428572) internal successors, (1188), 7 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 370.0) internal successors, (2960), 8 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,050 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 333 flow. Second operand 7 states and 1188 transitions. [2023-08-30 11:47:33,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 625 flow [2023-08-30 11:47:33,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 586 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 11:47:33,062 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 252 flow [2023-08-30 11:47:33,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 11:47:33,063 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-30 11:47:33,063 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 252 flow [2023-08-30 11:47:33,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:47:33,064 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-30 11:47:33,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:33,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 11:47:33,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:47:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1538947150, now seen corresponding path program 2 times [2023-08-30 11:47:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:47:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890637427] [2023-08-30 11:47:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:47:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:47:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:47:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:47:33,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:47:33,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890637427] [2023-08-30 11:47:33,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890637427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:47:33,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805655677] [2023-08-30 11:47:33,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:47:33,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:47:33,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:47:33,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:47:33,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:47:33,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:47:33,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:47:33,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:47:33,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:47:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 11:47:33,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:47:33,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805655677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:47:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:47:33,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-30 11:47:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385974915] [2023-08-30 11:47:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:47:33,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:47:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:47:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:47:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-30 11:47:33,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 370 [2023-08-30 11:47:33,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:47:33,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 370 [2023-08-30 11:47:33,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:47:33,664 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2023-08-30 11:47:33,664 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-30 11:47:33,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 45 events. 12/45 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 185. Up to 45 conditions per place. [2023-08-30 11:47:33,665 INFO L137 encePairwiseOnDemand]: 368/370 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-30 11:47:33,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 296 flow [2023-08-30 11:47:33,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:47:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:47:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-30 11:47:33,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2023-08-30 11:47:33,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-30 11:47:33,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-30 11:47:33,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:47:33,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-30 11:47:33,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 370.0) internal successors, (1480), 4 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,682 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 252 flow. Second operand 3 states and 485 transitions. [2023-08-30 11:47:33,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 296 flow [2023-08-30 11:47:33,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 34 transitions, 204 flow, removed 2 selfloop flow, removed 16 redundant places. [2023-08-30 11:47:33,684 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-30 11:47:33,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=370, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-30 11:47:33,684 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-08-30 11:47:33,684 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-30 11:47:33,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:47:33,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 11:47:33,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 11:47:33,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 11:47:33,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:47:33,899 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,SelfDestructingSolverStorable11 [2023-08-30 11:47:33,900 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 11:47:33,903 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:47:33,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:47:33,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:47:33 BasicIcfg [2023-08-30 11:47:33,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:47:33,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:47:33,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:47:33,908 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:47:33,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:47:19" (3/4) ... [2023-08-30 11:47:33,910 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:47:33,914 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:47:33,914 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:47:33,918 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 11:47:33,919 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:47:33,919 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:47:33,919 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:47:33,953 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:47:33,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:47:33,953 INFO L158 Benchmark]: Toolchain (without parser) took 15757.94ms. Allocated memory was 77.6MB in the beginning and 434.1MB in the end (delta: 356.5MB). Free memory was 57.3MB in the beginning and 159.8MB in the end (delta: -102.5MB). Peak memory consumption was 254.0MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,954 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:47:33,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.60ms. Allocated memory is still 77.6MB. Free memory was 57.1MB in the beginning and 45.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.11ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 43.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,954 INFO L158 Benchmark]: Boogie Preprocessor took 53.93ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 41.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,955 INFO L158 Benchmark]: RCFGBuilder took 716.68ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 55.2MB in the end (delta: -13.9MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,955 INFO L158 Benchmark]: TraceAbstraction took 14577.01ms. Allocated memory was 77.6MB in the beginning and 434.1MB in the end (delta: 356.5MB). Free memory was 54.4MB in the beginning and 164.0MB in the end (delta: -109.6MB). Peak memory consumption was 246.8MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,955 INFO L158 Benchmark]: Witness Printer took 45.09ms. Allocated memory is still 434.1MB. Free memory was 164.0MB in the beginning and 159.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:47:33,956 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 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.60ms. Allocated memory is still 77.6MB. Free memory was 57.1MB in the beginning and 45.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.11ms. Allocated memory is still 77.6MB. Free memory was 45.2MB in the beginning and 43.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.93ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 41.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.68ms. Allocated memory is still 77.6MB. Free memory was 41.3MB in the beginning and 55.2MB in the end (delta: -13.9MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14577.01ms. Allocated memory was 77.6MB in the beginning and 434.1MB in the end (delta: 356.5MB). Free memory was 54.4MB in the beginning and 164.0MB in the end (delta: -109.6MB). Peak memory consumption was 246.8MB. Max. memory is 16.1GB. * Witness Printer took 45.09ms. Allocated memory is still 434.1MB. Free memory was 164.0MB in the beginning and 159.8MB 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: 5.2s, 165 PlacesBefore, 33 PlacesAfterwards, 172 TransitionsBefore, 31 TransitionsAfterwards, 942 CoEnabledTransitionPairs, 7 FixpointIterations, 120 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 180 TotalNumberOfCompositions, 1454 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1054, independent: 997, independent conditional: 0, independent unconditional: 997, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 480, independent: 467, independent conditional: 0, independent unconditional: 467, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1054, independent: 530, independent conditional: 0, independent unconditional: 530, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 480, unknown conditional: 0, unknown unconditional: 480] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 117]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 206 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.4s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1719 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1421 mSDsluCounter, 483 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1937 IncrementalHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 111 mSDtfsCounter, 1937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=8, InterpolantAutomatonStates: 61, 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, 1.3s InterpolantComputationTime, 146 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 524 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 91/205 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:47:33,973 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