./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.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 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:36:38,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:36:38,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:36:38,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:36:38,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:36:38,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:36:38,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:36:38,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:36:38,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:36:38,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:36:38,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:36:38,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:36:38,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:36:38,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:36:38,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:36:38,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:36:38,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:36:38,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:36:38,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:36:38,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:36:38,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:36:38,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:36:38,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:36:38,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:36:38,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:36:38,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:36:38,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:36:38,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:36:38,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:36:38,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:36:38,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:36:38,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:36:38,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:36:38,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:36:38,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:36:38,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:36:38,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:36:38,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:36:38,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:36:38,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:36:38,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:36:38,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:36:38,471 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:36:38,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:36:38,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:36:38,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:36:38,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:36:38,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:36:38,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:36:38,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:36:38,484 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:36:38,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:36:38,485 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:36:38,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:36:38,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:36:38,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:36:38,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:36:38,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:36:38,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:36:38,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:36:38,487 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:36:38,487 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:36:38,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:36:38,487 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:36:38,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:36:38,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:36:38,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:36:38,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:36:38,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:36:38,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:36:38,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:36:38,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:36:38,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:36:38,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:36:38,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:36:38,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:36:38,490 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:36:38,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:36:38,490 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:36:38,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b8273370cd4ec5730806cf9b8f54c915e93daab6c48b9546d3920e402afdc55 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:36:38,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:36:38,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:36:38,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:36:38,796 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:36:38,796 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:36:38,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-09-01 08:36:39,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:36:40,165 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:36:40,166 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2023-09-01 08:36:40,171 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b002fea6/554d6a1a72b847b59f5b65c8c7f389a7/FLAG60d7b899f [2023-09-01 08:36:40,182 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b002fea6/554d6a1a72b847b59f5b65c8c7f389a7 [2023-09-01 08:36:40,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:36:40,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:36:40,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:36:40,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:36:40,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:36:40,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c34ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40, skipping insertion in model container [2023-09-01 08:36:40,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:36:40,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:36:40,409 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-three-array-sum.wvr.c[2691,2704] [2023-09-01 08:36:40,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:36:40,427 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:36:40,464 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-three-array-sum.wvr.c[2691,2704] [2023-09-01 08:36:40,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:36:40,480 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:36:40,481 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:36:40,486 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:36:40,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40 WrapperNode [2023-09-01 08:36:40,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:36:40,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:36:40,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:36:40,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:36:40,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,540 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 160 [2023-09-01 08:36:40,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:36:40,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:36:40,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:36:40,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:36:40,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:36:40,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:36:40,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:36:40,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:36:40,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (1/1) ... [2023-09-01 08:36:40,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:36:40,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:40,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:36:40,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:36:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:36:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:36:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:36:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:36:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:36:40,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:36:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:36:40,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:36:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:36:40,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:36:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:36:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:36:40,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:36:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:36:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:36:40,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:36:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:36:40,671 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:36:40,823 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:36:40,824 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:36:41,191 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:36:41,236 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:36:41,236 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:36:41,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:36:41 BoogieIcfgContainer [2023-09-01 08:36:41,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:36:41,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:36:41,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:36:41,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:36:41,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:36:40" (1/3) ... [2023-09-01 08:36:41,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12da4784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:36:41, skipping insertion in model container [2023-09-01 08:36:41,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:36:40" (2/3) ... [2023-09-01 08:36:41,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12da4784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:36:41, skipping insertion in model container [2023-09-01 08:36:41,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:36:41" (3/3) ... [2023-09-01 08:36:41,245 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2023-09-01 08:36:41,252 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:36:41,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:36:41,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 08:36:41,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:36:41,335 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:36:41,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 236 transitions, 496 flow [2023-09-01 08:36:41,429 INFO L130 PetriNetUnfolder]: 20/233 cut-off events. [2023-09-01 08:36:41,429 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:36:41,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 233 events. 20/233 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-09-01 08:36:41,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 236 transitions, 496 flow [2023-09-01 08:36:41,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 215 transitions, 445 flow [2023-09-01 08:36:41,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:36:41,450 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 215 transitions, 445 flow [2023-09-01 08:36:41,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 215 transitions, 445 flow [2023-09-01 08:36:41,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 215 transitions, 445 flow [2023-09-01 08:36:41,500 INFO L130 PetriNetUnfolder]: 19/215 cut-off events. [2023-09-01 08:36:41,501 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:36:41,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 19/215 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 240 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-09-01 08:36:41,504 INFO L119 LiptonReduction]: Number of co-enabled transitions 3058 [2023-09-01 08:36:47,825 INFO L134 LiptonReduction]: Checked pairs total: 5037 [2023-09-01 08:36:47,825 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-09-01 08:36:47,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:36:47,842 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;@6f3cfb71, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:36:47,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-09-01 08:36:47,845 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:36:47,845 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:36:47,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:47,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:36:47,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:47,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 28926, now seen corresponding path program 1 times [2023-09-01 08:36:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:47,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781952212] [2023-09-01 08:36:47,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:48,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781952212] [2023-09-01 08:36:48,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781952212] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:48,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:36:48,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:36:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825119177] [2023-09-01 08:36:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:36:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:36:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:36:48,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-09-01 08:36:48,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:48,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:48,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-09-01 08:36:48,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:48,783 INFO L130 PetriNetUnfolder]: 3103/4125 cut-off events. [2023-09-01 08:36:48,783 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2023-09-01 08:36:48,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8407 conditions, 4125 events. 3103/4125 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 18907 event pairs, 1674 based on Foata normal form. 0/1778 useless extension candidates. Maximal degree in co-relation 3590. Up to 2033 conditions per place. [2023-09-01 08:36:48,810 INFO L137 encePairwiseOnDemand]: 460/474 looper letters, 63 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-09-01 08:36:48,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 312 flow [2023-09-01 08:36:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:36:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:36:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-09-01 08:36:48,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838255977496484 [2023-09-01 08:36:48,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-09-01 08:36:48,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-09-01 08:36:48,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:48,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-09-01 08:36:48,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:48,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:48,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:48,847 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 101 flow. Second operand 3 states and 688 transitions. [2023-09-01 08:36:48,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 312 flow [2023-09-01 08:36:48,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:36:48,854 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 144 flow [2023-09-01 08:36:48,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2023-09-01 08:36:48,860 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-09-01 08:36:48,862 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 144 flow [2023-09-01 08:36:48,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:48,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:48,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:36:48,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:36:48,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:48,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash 898954, now seen corresponding path program 1 times [2023-09-01 08:36:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526067915] [2023-09-01 08:36:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:48,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526067915] [2023-09-01 08:36:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526067915] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:36:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795467266] [2023-09-01 08:36:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:48,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:48,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:36:49,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:36:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:49,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:36:49,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:36:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:49,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:36:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:49,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795467266] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:36:49,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:36:49,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:36:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071182052] [2023-09-01 08:36:49,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:36:49,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:36:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:36:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:36:49,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-09-01 08:36:49,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:49,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:49,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-09-01 08:36:49,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:50,318 INFO L130 PetriNetUnfolder]: 7765/10311 cut-off events. [2023-09-01 08:36:50,318 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-09-01 08:36:50,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20844 conditions, 10311 events. 7765/10311 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 53154 event pairs, 4185 based on Foata normal form. 0/4460 useless extension candidates. Maximal degree in co-relation 16591. Up to 2031 conditions per place. [2023-09-01 08:36:50,373 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 138 selfloop transitions, 33 changer transitions 0/174 dead transitions. [2023-09-01 08:36:50,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 174 transitions, 826 flow [2023-09-01 08:36:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:36:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:36:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1601 transitions. [2023-09-01 08:36:50,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48251959011452683 [2023-09-01 08:36:50,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1601 transitions. [2023-09-01 08:36:50,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1601 transitions. [2023-09-01 08:36:50,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:50,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1601 transitions. [2023-09-01 08:36:50,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.71428571428572) internal successors, (1601), 7 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:50,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 474.0) internal successors, (3792), 8 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:50,389 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 474.0) internal successors, (3792), 8 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:50,390 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 144 flow. Second operand 7 states and 1601 transitions. [2023-09-01 08:36:50,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 174 transitions, 826 flow [2023-09-01 08:36:50,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 174 transitions, 802 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:36:50,393 INFO L231 Difference]: Finished difference. Result has 50 places, 70 transitions, 351 flow [2023-09-01 08:36:50,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=50, PETRI_TRANSITIONS=70} [2023-09-01 08:36:50,394 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-09-01 08:36:50,395 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 70 transitions, 351 flow [2023-09-01 08:36:50,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.14285714285714) internal successors, (1429), 7 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:50,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:50,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:36:50,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:50,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:50,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:50,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 27868414, now seen corresponding path program 1 times [2023-09-01 08:36:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:50,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168378512] [2023-09-01 08:36:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:50,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:36:50,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168378512] [2023-09-01 08:36:50,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168378512] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:50,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:36:50,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:36:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566552236] [2023-09-01 08:36:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:50,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:36:50,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:36:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:36:50,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 474 [2023-09-01 08:36:50,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 70 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:50,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:50,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 474 [2023-09-01 08:36:50,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:51,622 INFO L130 PetriNetUnfolder]: 7756/10299 cut-off events. [2023-09-01 08:36:51,623 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-09-01 08:36:51,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20847 conditions, 10299 events. 7756/10299 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 53636 event pairs, 4185 based on Foata normal form. 2/4457 useless extension candidates. Maximal degree in co-relation 12480. Up to 10129 conditions per place. [2023-09-01 08:36:51,686 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 54 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-09-01 08:36:51,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 380 flow [2023-09-01 08:36:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:36:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:36:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-09-01 08:36:51,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549929676511955 [2023-09-01 08:36:51,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-09-01 08:36:51,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-09-01 08:36:51,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:51,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-09-01 08:36:51,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:51,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:51,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:51,695 INFO L175 Difference]: Start difference. First operand has 50 places, 70 transitions, 351 flow. Second operand 3 states and 647 transitions. [2023-09-01 08:36:51,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 380 flow [2023-09-01 08:36:51,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 350 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:36:51,702 INFO L231 Difference]: Finished difference. Result has 47 places, 58 transitions, 242 flow [2023-09-01 08:36:51,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=47, PETRI_TRANSITIONS=58} [2023-09-01 08:36:51,704 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-09-01 08:36:51,704 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 58 transitions, 242 flow [2023-09-01 08:36:51,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:51,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:51,705 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:36:51,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:36:51,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:51,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1011812650, now seen corresponding path program 2 times [2023-09-01 08:36:51,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871172325] [2023-09-01 08:36:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871172325] [2023-09-01 08:36:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871172325] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:36:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60310680] [2023-09-01 08:36:51,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:36:51,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:51,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:51,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:36:51,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:36:51,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:36:51,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:36:51,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:36:51,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:36:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:36:51,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:36:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60310680] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:51,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:36:51,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:36:51,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150470175] [2023-09-01 08:36:51,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:51,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:36:51,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:36:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:36:52,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 474 [2023-09-01 08:36:52,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 58 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:52,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:52,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 474 [2023-09-01 08:36:52,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:52,816 INFO L130 PetriNetUnfolder]: 7756/10298 cut-off events. [2023-09-01 08:36:52,816 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2023-09-01 08:36:52,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20825 conditions, 10298 events. 7756/10298 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 53708 event pairs, 4185 based on Foata normal form. 1/4457 useless extension candidates. Maximal degree in co-relation 20813. Up to 10123 conditions per place. [2023-09-01 08:36:52,865 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 48 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-09-01 08:36:52,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 340 flow [2023-09-01 08:36:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:36:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:36:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-09-01 08:36:52,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45921237693389594 [2023-09-01 08:36:52,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-09-01 08:36:52,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-09-01 08:36:52,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:52,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-09-01 08:36:52,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:52,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:52,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:52,873 INFO L175 Difference]: Start difference. First operand has 47 places, 58 transitions, 242 flow. Second operand 3 states and 653 transitions. [2023-09-01 08:36:52,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 340 flow [2023-09-01 08:36:52,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:36:52,875 INFO L231 Difference]: Finished difference. Result has 47 places, 57 transitions, 243 flow [2023-09-01 08:36:52,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=47, PETRI_TRANSITIONS=57} [2023-09-01 08:36:52,876 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2023-09-01 08:36:52,877 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 57 transitions, 243 flow [2023-09-01 08:36:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:52,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:52,877 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:36:52,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:53,083 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 [2023-09-01 08:36:53,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:53,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1919811594, now seen corresponding path program 1 times [2023-09-01 08:36:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:53,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104527099] [2023-09-01 08:36:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:53,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:36:53,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:53,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104527099] [2023-09-01 08:36:53,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104527099] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:53,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:36:53,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:36:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525368483] [2023-09-01 08:36:53,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:53,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:36:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:36:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:36:53,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-09-01 08:36:53,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 57 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:53,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:53,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-09-01 08:36:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:54,111 INFO L130 PetriNetUnfolder]: 7416/9864 cut-off events. [2023-09-01 08:36:54,112 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-09-01 08:36:54,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19958 conditions, 9864 events. 7416/9864 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 49900 event pairs, 4002 based on Foata normal form. 2/4330 useless extension candidates. Maximal degree in co-relation 19945. Up to 8098 conditions per place. [2023-09-01 08:36:54,158 INFO L137 encePairwiseOnDemand]: 466/474 looper letters, 66 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2023-09-01 08:36:54,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 467 flow [2023-09-01 08:36:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:36:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:36:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 849 transitions. [2023-09-01 08:36:54,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477848101265823 [2023-09-01 08:36:54,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 849 transitions. [2023-09-01 08:36:54,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 849 transitions. [2023-09-01 08:36:54,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:54,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 849 transitions. [2023-09-01 08:36:54,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.25) internal successors, (849), 4 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:54,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:54,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:54,169 INFO L175 Difference]: Start difference. First operand has 47 places, 57 transitions, 243 flow. Second operand 4 states and 849 transitions. [2023-09-01 08:36:54,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 467 flow [2023-09-01 08:36:54,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:36:54,173 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 291 flow [2023-09-01 08:36:54,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-09-01 08:36:54,176 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-09-01 08:36:54,176 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 291 flow [2023-09-01 08:36:54,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:54,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:54,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:36:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:36:54,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:54,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash -602529099, now seen corresponding path program 1 times [2023-09-01 08:36:54,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:54,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074045419] [2023-09-01 08:36:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:54,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:54,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:54,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074045419] [2023-09-01 08:36:54,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074045419] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:54,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:36:54,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:36:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967578042] [2023-09-01 08:36:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:36:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:36:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:36:54,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-09-01 08:36:54,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:54,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:54,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-09-01 08:36:54,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:55,504 INFO L130 PetriNetUnfolder]: 12121/15955 cut-off events. [2023-09-01 08:36:55,504 INFO L131 PetriNetUnfolder]: For 1327/1327 co-relation queries the response was YES. [2023-09-01 08:36:55,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33604 conditions, 15955 events. 12121/15955 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 84135 event pairs, 3502 based on Foata normal form. 0/8420 useless extension candidates. Maximal degree in co-relation 33589. Up to 10065 conditions per place. [2023-09-01 08:36:55,575 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 77 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-09-01 08:36:55,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 500 flow [2023-09-01 08:36:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:36:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:36:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-09-01 08:36:55,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48452883263009844 [2023-09-01 08:36:55,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-09-01 08:36:55,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-09-01 08:36:55,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:55,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-09-01 08:36:55,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:55,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:55,582 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:55,583 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 291 flow. Second operand 3 states and 689 transitions. [2023-09-01 08:36:55,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 500 flow [2023-09-01 08:36:55,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 484 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 08:36:55,588 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 289 flow [2023-09-01 08:36:55,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2023-09-01 08:36:55,589 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-09-01 08:36:55,589 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 289 flow [2023-09-01 08:36:55,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:55,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:55,590 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:36:55,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:36:55,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:55,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1987201622, now seen corresponding path program 1 times [2023-09-01 08:36:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:55,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359165617] [2023-09-01 08:36:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:55,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:36:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359165617] [2023-09-01 08:36:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359165617] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:36:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633307346] [2023-09-01 08:36:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:55,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:36:55,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:36:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:55,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:36:55,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:36:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:36:55,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:36:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:36:55,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633307346] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:36:55,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:36:55,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 08:36:55,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524994234] [2023-09-01 08:36:55,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:36:55,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:36:55,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:36:55,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:36:56,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 474 [2023-09-01 08:36:56,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 289 flow. Second operand has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:56,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:56,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 474 [2023-09-01 08:36:56,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:57,344 INFO L130 PetriNetUnfolder]: 11595/15542 cut-off events. [2023-09-01 08:36:57,344 INFO L131 PetriNetUnfolder]: For 2098/2098 co-relation queries the response was YES. [2023-09-01 08:36:57,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34068 conditions, 15542 events. 11595/15542 cut-off events. For 2098/2098 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 84189 event pairs, 6603 based on Foata normal form. 516/8467 useless extension candidates. Maximal degree in co-relation 34052. Up to 8568 conditions per place. [2023-09-01 08:36:57,418 INFO L137 encePairwiseOnDemand]: 464/474 looper letters, 113 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2023-09-01 08:36:57,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 812 flow [2023-09-01 08:36:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:36:57,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:36:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2050 transitions. [2023-09-01 08:36:57,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43248945147679324 [2023-09-01 08:36:57,424 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2050 transitions. [2023-09-01 08:36:57,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2050 transitions. [2023-09-01 08:36:57,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:57,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2050 transitions. [2023-09-01 08:36:57,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:57,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 474.0) internal successors, (5214), 11 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:57,436 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 474.0) internal successors, (5214), 11 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:57,436 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 289 flow. Second operand 10 states and 2050 transitions. [2023-09-01 08:36:57,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 812 flow [2023-09-01 08:36:57,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 143 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:36:57,441 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 419 flow [2023-09-01 08:36:57,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=419, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-09-01 08:36:57,442 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-09-01 08:36:57,442 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 419 flow [2023-09-01 08:36:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 193.28571428571428) internal successors, (2706), 14 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 08:36:57,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:57,649 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 [2023-09-01 08:36:57,649 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:57,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1449440266, now seen corresponding path program 2 times [2023-09-01 08:36:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:57,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300701988] [2023-09-01 08:36:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:36:57,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:57,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300701988] [2023-09-01 08:36:57,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300701988] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:36:57,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032171435] [2023-09-01 08:36:57,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:36:57,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:57,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:57,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:36:57,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:36:57,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:36:57,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:36:57,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:36:57,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:36:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:36:57,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:36:57,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032171435] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:57,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:36:57,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-09-01 08:36:57,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253639515] [2023-09-01 08:36:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:57,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:36:57,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:36:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:36:57,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 474 [2023-09-01 08:36:57,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:57,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:57,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 474 [2023-09-01 08:36:57,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:58,753 INFO L130 PetriNetUnfolder]: 10170/13707 cut-off events. [2023-09-01 08:36:58,753 INFO L131 PetriNetUnfolder]: For 5313/5313 co-relation queries the response was YES. [2023-09-01 08:36:58,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29127 conditions, 13707 events. 10170/13707 cut-off events. For 5313/5313 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 73969 event pairs, 5802 based on Foata normal form. 773/7364 useless extension candidates. Maximal degree in co-relation 29106. Up to 13539 conditions per place. [2023-09-01 08:36:58,802 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 60 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-09-01 08:36:58,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 507 flow [2023-09-01 08:36:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:36:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:36:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-09-01 08:36:58,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542897327707454 [2023-09-01 08:36:58,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-09-01 08:36:58,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-09-01 08:36:58,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:58,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-09-01 08:36:58,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,809 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 419 flow. Second operand 3 states and 646 transitions. [2023-09-01 08:36:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 507 flow [2023-09-01 08:36:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 415 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-09-01 08:36:58,812 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 295 flow [2023-09-01 08:36:58,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2023-09-01 08:36:58,812 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-09-01 08:36:58,813 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 295 flow [2023-09-01 08:36:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:58,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:36:58,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:59,019 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 [2023-09-01 08:36:59,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:36:59,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:59,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1491304546, now seen corresponding path program 1 times [2023-09-01 08:36:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:59,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364704417] [2023-09-01 08:36:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:36:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364704417] [2023-09-01 08:36:59,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364704417] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:36:59,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:36:59,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:36:59,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998382129] [2023-09-01 08:36:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:36:59,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:36:59,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:36:59,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:36:59,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-09-01 08:36:59,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:59,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:59,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-09-01 08:36:59,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:00,184 INFO L130 PetriNetUnfolder]: 13770/19083 cut-off events. [2023-09-01 08:37:00,185 INFO L131 PetriNetUnfolder]: For 1320/1320 co-relation queries the response was YES. [2023-09-01 08:37:00,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40838 conditions, 19083 events. 13770/19083 cut-off events. For 1320/1320 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 109838 event pairs, 5406 based on Foata normal form. 0/10149 useless extension candidates. Maximal degree in co-relation 40823. Up to 12490 conditions per place. [2023-09-01 08:37:00,272 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 81 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-09-01 08:37:00,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 515 flow [2023-09-01 08:37:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-09-01 08:37:00,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480309423347398 [2023-09-01 08:37:00,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-09-01 08:37:00,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-09-01 08:37:00,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:00,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-09-01 08:37:00,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:00,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:00,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:00,280 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 295 flow. Second operand 3 states and 683 transitions. [2023-09-01 08:37:00,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 515 flow [2023-09-01 08:37:00,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:00,283 INFO L231 Difference]: Finished difference. Result has 55 places, 65 transitions, 306 flow [2023-09-01 08:37:00,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=55, PETRI_TRANSITIONS=65} [2023-09-01 08:37:00,284 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-09-01 08:37:00,284 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 306 flow [2023-09-01 08:37:00,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:00,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:00,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:00,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:37:00,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:00,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1014205661, now seen corresponding path program 1 times [2023-09-01 08:37:00,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:00,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788166383] [2023-09-01 08:37:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:00,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:00,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788166383] [2023-09-01 08:37:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788166383] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:00,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246896049] [2023-09-01 08:37:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:00,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:00,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:00,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:37:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:00,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:37:00,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:00,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:00,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246896049] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:00,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:00,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:37:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365648864] [2023-09-01 08:37:00,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:00,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:37:00,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:37:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:37:00,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-09-01 08:37:00,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:00,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:00,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-09-01 08:37:00,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:01,691 INFO L130 PetriNetUnfolder]: 12052/16933 cut-off events. [2023-09-01 08:37:01,691 INFO L131 PetriNetUnfolder]: For 4607/4607 co-relation queries the response was YES. [2023-09-01 08:37:01,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39563 conditions, 16933 events. 12052/16933 cut-off events. For 4607/4607 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 97807 event pairs, 7858 based on Foata normal form. 136/10714 useless extension candidates. Maximal degree in co-relation 39547. Up to 15288 conditions per place. [2023-09-01 08:37:01,774 INFO L137 encePairwiseOnDemand]: 465/474 looper letters, 84 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2023-09-01 08:37:01,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 107 transitions, 634 flow [2023-09-01 08:37:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:37:01,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:37:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1055 transitions. [2023-09-01 08:37:01,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451476793248945 [2023-09-01 08:37:01,780 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1055 transitions. [2023-09-01 08:37:01,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1055 transitions. [2023-09-01 08:37:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1055 transitions. [2023-09-01 08:37:01,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:01,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:01,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:01,789 INFO L175 Difference]: Start difference. First operand has 55 places, 65 transitions, 306 flow. Second operand 5 states and 1055 transitions. [2023-09-01 08:37:01,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 107 transitions, 634 flow [2023-09-01 08:37:01,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 107 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:01,801 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 361 flow [2023-09-01 08:37:01,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2023-09-01 08:37:01,803 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-09-01 08:37:01,803 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 361 flow [2023-09-01 08:37:01,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:01,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:01,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:01,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:02,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 08:37:02,010 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:02,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:02,011 INFO L85 PathProgramCache]: Analyzing trace with hash 790168321, now seen corresponding path program 1 times [2023-09-01 08:37:02,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:02,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070433986] [2023-09-01 08:37:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:02,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:02,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:02,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070433986] [2023-09-01 08:37:02,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070433986] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073291060] [2023-09-01 08:37:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:02,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:02,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:02,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:02,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:37:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:02,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:37:02,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:02,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073291060] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:02,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:02,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:37:02,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901848431] [2023-09-01 08:37:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:02,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:37:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:37:02,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:37:02,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-09-01 08:37:02,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:02,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:02,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-09-01 08:37:02,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:03,186 INFO L130 PetriNetUnfolder]: 10424/14668 cut-off events. [2023-09-01 08:37:03,186 INFO L131 PetriNetUnfolder]: For 3966/4763 co-relation queries the response was YES. [2023-09-01 08:37:03,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34431 conditions, 14668 events. 10424/14668 cut-off events. For 3966/4763 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 86519 event pairs, 7067 based on Foata normal form. 797/10006 useless extension candidates. Maximal degree in co-relation 34412. Up to 14143 conditions per place. [2023-09-01 08:37:03,240 INFO L137 encePairwiseOnDemand]: 465/474 looper letters, 72 selfloop transitions, 21 changer transitions 2/98 dead transitions. [2023-09-01 08:37:03,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 632 flow [2023-09-01 08:37:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:37:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:37:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1047 transitions. [2023-09-01 08:37:03,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417721518987342 [2023-09-01 08:37:03,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1047 transitions. [2023-09-01 08:37:03,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1047 transitions. [2023-09-01 08:37:03,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:03,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1047 transitions. [2023-09-01 08:37:03,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.4) internal successors, (1047), 5 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:03,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:03,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:03,250 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 361 flow. Second operand 5 states and 1047 transitions. [2023-09-01 08:37:03,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 632 flow [2023-09-01 08:37:03,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 98 transitions, 597 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:37:03,256 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 383 flow [2023-09-01 08:37:03,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2023-09-01 08:37:03,257 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-09-01 08:37:03,257 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 383 flow [2023-09-01 08:37:03,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:03,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:03,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:03,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:03,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:03,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:03,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash -91373954, now seen corresponding path program 1 times [2023-09-01 08:37:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731837226] [2023-09-01 08:37:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:03,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731837226] [2023-09-01 08:37:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731837226] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:37:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345926408] [2023-09-01 08:37:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:03,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:03,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-09-01 08:37:03,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:03,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:03,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-09-01 08:37:03,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:04,503 INFO L130 PetriNetUnfolder]: 13356/18884 cut-off events. [2023-09-01 08:37:04,503 INFO L131 PetriNetUnfolder]: For 6159/7261 co-relation queries the response was YES. [2023-09-01 08:37:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45358 conditions, 18884 events. 13356/18884 cut-off events. For 6159/7261 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 116520 event pairs, 6862 based on Foata normal form. 1102/14621 useless extension candidates. Maximal degree in co-relation 45337. Up to 12866 conditions per place. [2023-09-01 08:37:04,613 INFO L137 encePairwiseOnDemand]: 470/474 looper letters, 80 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-09-01 08:37:04,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 605 flow [2023-09-01 08:37:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-09-01 08:37:04,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-09-01 08:37:04,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-09-01 08:37:04,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-09-01 08:37:04,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:04,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-09-01 08:37:04,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:04,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:04,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:04,620 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 383 flow. Second operand 3 states and 681 transitions. [2023-09-01 08:37:04,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 605 flow [2023-09-01 08:37:04,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:37:04,627 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 362 flow [2023-09-01 08:37:04,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2023-09-01 08:37:04,628 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-09-01 08:37:04,628 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 362 flow [2023-09-01 08:37:04,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:04,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:04,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:04,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:37:04,629 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:04,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -337012038, now seen corresponding path program 1 times [2023-09-01 08:37:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684503037] [2023-09-01 08:37:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:37:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684503037] [2023-09-01 08:37:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684503037] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440403925] [2023-09-01 08:37:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:04,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:04,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:04,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:04,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:37:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 08:37:04,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:37:04,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440403925] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:04,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 08:37:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667731526] [2023-09-01 08:37:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:04,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:37:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:37:04,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:37:04,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-09-01 08:37:04,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:04,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:04,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-09-01 08:37:04,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:05,852 INFO L130 PetriNetUnfolder]: 14518/20087 cut-off events. [2023-09-01 08:37:05,852 INFO L131 PetriNetUnfolder]: For 6684/6743 co-relation queries the response was YES. [2023-09-01 08:37:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51643 conditions, 20087 events. 14518/20087 cut-off events. For 6684/6743 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 119903 event pairs, 1252 based on Foata normal form. 59/14669 useless extension candidates. Maximal degree in co-relation 51622. Up to 8820 conditions per place. [2023-09-01 08:37:05,992 INFO L137 encePairwiseOnDemand]: 471/474 looper letters, 100 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2023-09-01 08:37:05,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 687 flow [2023-09-01 08:37:05,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:37:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:37:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-09-01 08:37:05,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47890295358649787 [2023-09-01 08:37:05,995 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-09-01 08:37:05,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-09-01 08:37:05,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:05,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-09-01 08:37:05,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:06,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:06,000 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 474.0) internal successors, (2370), 5 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:06,001 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 362 flow. Second operand 4 states and 908 transitions. [2023-09-01 08:37:06,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 687 flow [2023-09-01 08:37:06,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 683 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:06,047 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 362 flow [2023-09-01 08:37:06,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=362, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-09-01 08:37:06,048 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2023-09-01 08:37:06,048 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 362 flow [2023-09-01 08:37:06,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:06,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:06,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:06,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:06,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:06,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:06,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash -561049378, now seen corresponding path program 1 times [2023-09-01 08:37:06,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:06,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557802799] [2023-09-01 08:37:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:06,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:37:06,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557802799] [2023-09-01 08:37:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557802799] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109319862] [2023-09-01 08:37:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:06,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:06,315 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:06,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:37:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:06,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:37:06,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:06,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:06,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109319862] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:06,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:06,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 08:37:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933209332] [2023-09-01 08:37:06,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:06,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:37:06,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:37:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:37:06,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-09-01 08:37:06,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:06,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:06,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-09-01 08:37:06,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:08,408 INFO L130 PetriNetUnfolder]: 14265/19821 cut-off events. [2023-09-01 08:37:08,408 INFO L131 PetriNetUnfolder]: For 11139/12465 co-relation queries the response was YES. [2023-09-01 08:37:08,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50634 conditions, 19821 events. 14265/19821 cut-off events. For 11139/12465 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 120596 event pairs, 1963 based on Foata normal form. 1490/16177 useless extension candidates. Maximal degree in co-relation 50613. Up to 3631 conditions per place. [2023-09-01 08:37:08,473 INFO L137 encePairwiseOnDemand]: 461/474 looper letters, 229 selfloop transitions, 34 changer transitions 10/276 dead transitions. [2023-09-01 08:37:08,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 276 transitions, 1564 flow [2023-09-01 08:37:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 08:37:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 08:37:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3248 transitions. [2023-09-01 08:37:08,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282700421940928 [2023-09-01 08:37:08,481 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3248 transitions. [2023-09-01 08:37:08,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3248 transitions. [2023-09-01 08:37:08,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:08,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3248 transitions. [2023-09-01 08:37:08,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 203.0) internal successors, (3248), 16 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:08,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:08,497 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:08,497 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 362 flow. Second operand 16 states and 3248 transitions. [2023-09-01 08:37:08,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 276 transitions, 1564 flow [2023-09-01 08:37:08,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 276 transitions, 1550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:37:08,514 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 482 flow [2023-09-01 08:37:08,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=482, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-09-01 08:37:08,515 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-09-01 08:37:08,515 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 482 flow [2023-09-01 08:37:08,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 190.53846153846155) internal successors, (2477), 13 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:08,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:08,516 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:08,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:37:08,726 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:08,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1910925344, now seen corresponding path program 1 times [2023-09-01 08:37:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927678136] [2023-09-01 08:37:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:08,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:08,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927678136] [2023-09-01 08:37:08,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927678136] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:08,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:08,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:37:08,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124672479] [2023-09-01 08:37:08,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:08,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:08,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-09-01 08:37:08,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 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) [2023-09-01 08:37:08,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:08,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-09-01 08:37:08,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:09,717 INFO L130 PetriNetUnfolder]: 11024/15628 cut-off events. [2023-09-01 08:37:09,717 INFO L131 PetriNetUnfolder]: For 13661/14965 co-relation queries the response was YES. [2023-09-01 08:37:09,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44299 conditions, 15628 events. 11024/15628 cut-off events. For 13661/14965 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 96577 event pairs, 1128 based on Foata normal form. 1304/14099 useless extension candidates. Maximal degree in co-relation 44274. Up to 13176 conditions per place. [2023-09-01 08:37:09,798 INFO L137 encePairwiseOnDemand]: 472/474 looper letters, 91 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-09-01 08:37:09,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 97 transitions, 767 flow [2023-09-01 08:37:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2023-09-01 08:37:09,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732770745428973 [2023-09-01 08:37:09,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2023-09-01 08:37:09,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2023-09-01 08:37:09,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:09,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2023-09-01 08:37:09,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:09,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:09,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:09,805 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 482 flow. Second operand 3 states and 673 transitions. [2023-09-01 08:37:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 97 transitions, 767 flow [2023-09-01 08:37:09,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 719 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 08:37:09,820 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 434 flow [2023-09-01 08:37:09,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=434, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-09-01 08:37:09,820 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2023-09-01 08:37:09,820 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 434 flow [2023-09-01 08:37:09,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 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) [2023-09-01 08:37:09,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:09,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:09,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 08:37:09,821 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:09,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:09,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1910925315, now seen corresponding path program 1 times [2023-09-01 08:37:09,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:09,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008983502] [2023-09-01 08:37:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:09,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008983502] [2023-09-01 08:37:09,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008983502] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900363049] [2023-09-01 08:37:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:09,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:09,873 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:09,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:37:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:09,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:37:09,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:10,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:10,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900363049] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:10,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:10,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:37:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378104608] [2023-09-01 08:37:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:10,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:37:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:37:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:37:10,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 474 [2023-09-01 08:37:10,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:10,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:10,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 474 [2023-09-01 08:37:10,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:11,099 INFO L130 PetriNetUnfolder]: 10882/15416 cut-off events. [2023-09-01 08:37:11,100 INFO L131 PetriNetUnfolder]: For 12471/13710 co-relation queries the response was YES. [2023-09-01 08:37:11,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44299 conditions, 15416 events. 10882/15416 cut-off events. For 12471/13710 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 91197 event pairs, 7904 based on Foata normal form. 1239/13922 useless extension candidates. Maximal degree in co-relation 44275. Up to 15266 conditions per place. [2023-09-01 08:37:11,165 INFO L137 encePairwiseOnDemand]: 464/474 looper letters, 48 selfloop transitions, 15 changer transitions 30/96 dead transitions. [2023-09-01 08:37:11,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 678 flow [2023-09-01 08:37:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:37:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:37:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1036 transitions. [2023-09-01 08:37:11,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371308016877637 [2023-09-01 08:37:11,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1036 transitions. [2023-09-01 08:37:11,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1036 transitions. [2023-09-01 08:37:11,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:11,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1036 transitions. [2023-09-01 08:37:11,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:11,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:11,173 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 474.0) internal successors, (2844), 6 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:11,174 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 434 flow. Second operand 5 states and 1036 transitions. [2023-09-01 08:37:11,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 678 flow [2023-09-01 08:37:11,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 96 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:11,190 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 399 flow [2023-09-01 08:37:11,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-09-01 08:37:11,190 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2023-09-01 08:37:11,191 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 399 flow [2023-09-01 08:37:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:11,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:11,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:11,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:11,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:37:11,397 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:11,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1963386740, now seen corresponding path program 1 times [2023-09-01 08:37:11,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:11,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294034040] [2023-09-01 08:37:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:11,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-09-01 08:37:11,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:11,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294034040] [2023-09-01 08:37:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294034040] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:11,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:37:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938518629] [2023-09-01 08:37:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:11,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:11,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:11,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 474 [2023-09-01 08:37:11,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 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) [2023-09-01 08:37:11,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:11,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 474 [2023-09-01 08:37:11,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:12,423 INFO L130 PetriNetUnfolder]: 11919/16526 cut-off events. [2023-09-01 08:37:12,423 INFO L131 PetriNetUnfolder]: For 10492/11498 co-relation queries the response was YES. [2023-09-01 08:37:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48167 conditions, 16526 events. 11919/16526 cut-off events. For 10492/11498 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 98727 event pairs, 500 based on Foata normal form. 1450/15710 useless extension candidates. Maximal degree in co-relation 48140. Up to 15514 conditions per place. [2023-09-01 08:37:12,513 INFO L137 encePairwiseOnDemand]: 472/474 looper letters, 74 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2023-09-01 08:37:12,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 585 flow [2023-09-01 08:37:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-09-01 08:37:12,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47257383966244726 [2023-09-01 08:37:12,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-09-01 08:37:12,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-09-01 08:37:12,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:12,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-09-01 08:37:12,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:12,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:12,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 474.0) internal successors, (1896), 4 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:12,520 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 399 flow. Second operand 3 states and 672 transitions. [2023-09-01 08:37:12,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 585 flow [2023-09-01 08:37:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 507 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-09-01 08:37:12,557 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 317 flow [2023-09-01 08:37:12,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-09-01 08:37:12,558 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-09-01 08:37:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 317 flow [2023-09-01 08:37:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 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) [2023-09-01 08:37:12,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:12,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:12,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 08:37:12,559 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:12,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1441492826, now seen corresponding path program 1 times [2023-09-01 08:37:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069413264] [2023-09-01 08:37:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:37:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:12,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069413264] [2023-09-01 08:37:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069413264] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453797437] [2023-09-01 08:37:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:12,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:12,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:12,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:12,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:37:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:12,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:37:12,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:12,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453797437] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:12,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:12,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 08:37:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331938771] [2023-09-01 08:37:12,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:12,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:37:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:37:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:37:13,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-09-01 08:37:13,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:13,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:13,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-09-01 08:37:13,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:14,671 INFO L130 PetriNetUnfolder]: 11921/16961 cut-off events. [2023-09-01 08:37:14,671 INFO L131 PetriNetUnfolder]: For 7330/8707 co-relation queries the response was YES. [2023-09-01 08:37:14,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45151 conditions, 16961 events. 11921/16961 cut-off events. For 7330/8707 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 103534 event pairs, 3067 based on Foata normal form. 1377/15342 useless extension candidates. Maximal degree in co-relation 45132. Up to 5719 conditions per place. [2023-09-01 08:37:14,751 INFO L137 encePairwiseOnDemand]: 461/474 looper letters, 98 selfloop transitions, 19 changer transitions 88/207 dead transitions. [2023-09-01 08:37:14,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 207 transitions, 1237 flow [2023-09-01 08:37:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 08:37:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 08:37:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2791 transitions. [2023-09-01 08:37:14,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205846895720313 [2023-09-01 08:37:14,756 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2791 transitions. [2023-09-01 08:37:14,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2791 transitions. [2023-09-01 08:37:14,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:14,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2791 transitions. [2023-09-01 08:37:14,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 199.35714285714286) internal successors, (2791), 14 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:14,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:14,766 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:14,766 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 317 flow. Second operand 14 states and 2791 transitions. [2023-09-01 08:37:14,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 207 transitions, 1237 flow [2023-09-01 08:37:14,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 207 transitions, 1235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:14,785 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 308 flow [2023-09-01 08:37:14,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=308, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2023-09-01 08:37:14,786 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-09-01 08:37:14,786 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 308 flow [2023-09-01 08:37:14,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:14,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:14,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:14,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:14,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 08:37:14,992 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:14,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:14,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1323946515, now seen corresponding path program 2 times [2023-09-01 08:37:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:14,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003555498] [2023-09-01 08:37:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 08:37:15,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003555498] [2023-09-01 08:37:15,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003555498] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:15,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238240269] [2023-09-01 08:37:15,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:37:15,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:15,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:15,124 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:15,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 08:37:15,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:37:15,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:37:15,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:37:15,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:37:15,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:37:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238240269] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:15,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-09-01 08:37:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387784327] [2023-09-01 08:37:15,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:15,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:37:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:37:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:37:15,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-09-01 08:37:15,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 190.9) internal successors, (1909), 10 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:15,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:15,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-09-01 08:37:15,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:17,348 INFO L130 PetriNetUnfolder]: 19640/27213 cut-off events. [2023-09-01 08:37:17,348 INFO L131 PetriNetUnfolder]: For 18365/20603 co-relation queries the response was YES. [2023-09-01 08:37:17,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81670 conditions, 27213 events. 19640/27213 cut-off events. For 18365/20603 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 166471 event pairs, 4246 based on Foata normal form. 2238/26275 useless extension candidates. Maximal degree in co-relation 81648. Up to 7278 conditions per place. [2023-09-01 08:37:17,526 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 175 selfloop transitions, 36 changer transitions 27/240 dead transitions. [2023-09-01 08:37:17,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 240 transitions, 1559 flow [2023-09-01 08:37:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 08:37:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 08:37:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3189 transitions. [2023-09-01 08:37:17,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42049050632911394 [2023-09-01 08:37:17,531 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3189 transitions. [2023-09-01 08:37:17,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3189 transitions. [2023-09-01 08:37:17,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:17,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3189 transitions. [2023-09-01 08:37:17,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.3125) internal successors, (3189), 16 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:17,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:17,544 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 474.0) internal successors, (8058), 17 states have internal predecessors, (8058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:17,544 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 308 flow. Second operand 16 states and 3189 transitions. [2023-09-01 08:37:17,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 240 transitions, 1559 flow [2023-09-01 08:37:17,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 240 transitions, 1415 flow, removed 33 selfloop flow, removed 8 redundant places. [2023-09-01 08:37:17,642 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 442 flow [2023-09-01 08:37:17,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=442, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-09-01 08:37:17,642 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2023-09-01 08:37:17,643 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 442 flow [2023-09-01 08:37:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 190.9) internal successors, (1909), 10 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:17,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:17,643 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:17,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:17,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:17,854 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-09-01 08:37:17,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1421213311, now seen corresponding path program 2 times [2023-09-01 08:37:17,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:17,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878970768] [2023-09-01 08:37:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-09-01 08:37:17,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:17,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878970768] [2023-09-01 08:37:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878970768] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:17,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790635636] [2023-09-01 08:37:17,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:37:17,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:17,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:17,981 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:18,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 08:37:18,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:37:18,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:37:18,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:37:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:37:18,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:37:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790635636] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:18,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:18,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-09-01 08:37:18,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267932058] [2023-09-01 08:37:18,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:18,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 08:37:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 08:37:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 08:37:18,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 474 [2023-09-01 08:37:18,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 191.7) internal successors, (1917), 10 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:18,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:18,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 474 [2023-09-01 08:37:18,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:19,678 INFO L130 PetriNetUnfolder]: 14886/20518 cut-off events. [2023-09-01 08:37:19,678 INFO L131 PetriNetUnfolder]: For 20345/22234 co-relation queries the response was YES. [2023-09-01 08:37:19,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59366 conditions, 20518 events. 14886/20518 cut-off events. For 20345/22234 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 118687 event pairs, 1815 based on Foata normal form. 1889/19693 useless extension candidates. Maximal degree in co-relation 59343. Up to 7884 conditions per place. [2023-09-01 08:37:19,752 INFO L137 encePairwiseOnDemand]: 462/474 looper letters, 0 selfloop transitions, 0 changer transitions 183/183 dead transitions. [2023-09-01 08:37:19,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 183 transitions, 1302 flow [2023-09-01 08:37:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 08:37:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 08:37:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2759 transitions. [2023-09-01 08:37:19,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41576250753465943 [2023-09-01 08:37:19,755 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2759 transitions. [2023-09-01 08:37:19,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2759 transitions. [2023-09-01 08:37:19,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:19,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2759 transitions. [2023-09-01 08:37:19,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 197.07142857142858) internal successors, (2759), 14 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:19,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:19,762 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 474.0) internal successors, (7110), 15 states have internal predecessors, (7110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:19,762 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 442 flow. Second operand 14 states and 2759 transitions. [2023-09-01 08:37:19,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 183 transitions, 1302 flow [2023-09-01 08:37:19,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 183 transitions, 1241 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-09-01 08:37:19,886 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2023-09-01 08:37:19,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=474, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2023-09-01 08:37:19,886 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-09-01 08:37:19,887 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2023-09-01 08:37:19,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.7) internal successors, (1917), 10 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:19,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-09-01 08:37:19,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-09-01 08:37:19,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-09-01 08:37:19,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-09-01 08:37:19,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-09-01 08:37:19,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-09-01 08:37:19,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-09-01 08:37:19,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-09-01 08:37:19,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-09-01 08:37:19,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-09-01 08:37:19,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-09-01 08:37:19,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-09-01 08:37:19,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-09-01 08:37:19,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-09-01 08:37:19,892 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-09-01 08:37:19,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-09-01 08:37:19,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-09-01 08:37:19,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-09-01 08:37:19,893 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-09-01 08:37:19,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:20,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:20,099 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:20,103 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:37:20,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:37:20,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:37:20 BasicIcfg [2023-09-01 08:37:20,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:37:20,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:37:20,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:37:20,107 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:37:20,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:36:41" (3/4) ... [2023-09-01 08:37:20,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:37:20,113 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:37:20,113 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:37:20,113 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:37:20,120 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2023-09-01 08:37:20,120 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:37:20,121 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:37:20,121 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:37:20,167 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:37:20,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:37:20,168 INFO L158 Benchmark]: Toolchain (without parser) took 39982.53ms. Allocated memory was 75.5MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 51.1MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-09-01 08:37:20,168 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:37:20,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.21ms. Allocated memory is still 75.5MB. Free memory was 51.0MB in the beginning and 39.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:37:20,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.97ms. Allocated memory is still 75.5MB. Free memory was 39.2MB in the beginning and 37.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:20,169 INFO L158 Benchmark]: Boogie Preprocessor took 66.51ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 55.2MB in the end (delta: -17.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-09-01 08:37:20,170 INFO L158 Benchmark]: RCFGBuilder took 628.79ms. Allocated memory is still 75.5MB. Free memory was 55.2MB in the beginning and 31.5MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:20,170 INFO L158 Benchmark]: TraceAbstraction took 38865.91ms. Allocated memory was 75.5MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 30.8MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-09-01 08:37:20,171 INFO L158 Benchmark]: Witness Printer took 60.99ms. Allocated memory is still 3.8GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:37:20,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 44.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.21ms. Allocated memory is still 75.5MB. Free memory was 51.0MB in the beginning and 39.2MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.97ms. Allocated memory is still 75.5MB. Free memory was 39.2MB in the beginning and 37.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.51ms. Allocated memory is still 75.5MB. Free memory was 37.3MB in the beginning and 55.2MB in the end (delta: -17.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * RCFGBuilder took 628.79ms. Allocated memory is still 75.5MB. Free memory was 55.2MB in the beginning and 31.5MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 38865.91ms. Allocated memory was 75.5MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 30.8MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 60.99ms. Allocated memory is still 3.8GB. Free memory was 2.5GB in the beginning and 2.5GB in the end (delta: 5.2MB). 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: 6.4s, 206 PlacesBefore, 46 PlacesAfterwards, 215 TransitionsBefore, 43 TransitionsAfterwards, 3058 CoEnabledTransitionPairs, 7 FixpointIterations, 132 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 238 TotalNumberOfCompositions, 5037 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3306, independent: 3203, independent conditional: 0, independent unconditional: 3203, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1641, independent: 1612, independent conditional: 0, independent unconditional: 1612, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3306, independent: 1591, independent conditional: 0, independent unconditional: 1591, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 1641, unknown conditional: 0, unknown unconditional: 1641] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: 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: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 268 locations, 25 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: 38.7s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4922 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4097 mSDsluCounter, 1550 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1306 mSDsCounter, 405 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7169 IncrementalHoareTripleChecker+Invalid, 7574 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 405 mSolverCounterUnsat, 244 mSDtfsCounter, 7169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 170 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=482occurred in iteration=14, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 358 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2384 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 38 InterpolantComputations, 14 PerfectInterpolantSequences, 181/246 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:37:20,200 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