./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-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-simple-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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --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 08:33:48,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:33:48,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:33:48,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:33:48,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:33:48,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:33:48,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:33:48,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:33:48,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:33:48,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:33:48,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:33:48,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:33:48,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:33:48,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:33:48,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:33:48,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:33:48,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:33:48,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:33:48,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:33:48,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:33:48,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:33:48,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:33:48,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:33:48,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:33:48,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:33:48,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:33:48,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:33:48,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:33:48,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:33:48,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:33:48,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:33:48,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:33:48,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:33:48,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:33:48,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:33:48,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:33:48,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:33:48,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:33:48,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:33:48,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:33:48,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:33:48,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:33:48,327 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:33:48,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:33:48,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:33:48,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:33:48,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:33:48,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:33:48,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:33:48,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:33:48,331 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:33:48,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:33:48,332 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:33:48,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:33:48,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:33:48,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:33:48,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:33:48,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:33:48,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:33:48,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:33:48,333 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:33:48,333 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:33:48,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:33:48,334 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:33:48,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:33:48,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:33:48,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:33:48,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:33:48,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:33:48,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:33:48,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:33:48,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:33:48,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:33:48,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:33:48,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:33:48,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:33:48,336 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:33:48,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:33:48,337 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:33:48,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:33:48,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:33:48,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:33:48,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:33:48,650 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:33:48,651 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:33:48,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-09-01 08:33:49,821 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:33:50,021 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:33:50,022 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2023-09-01 08:33:50,030 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4a9695d/89f3482a0f5842bc8d734b66bec4af32/FLAG1d60bd355 [2023-09-01 08:33:50,046 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4a9695d/89f3482a0f5842bc8d734b66bec4af32 [2023-09-01 08:33:50,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:33:50,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:33:50,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:33:50,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:33:50,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:33:50,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b0bddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50, skipping insertion in model container [2023-09-01 08:33:50,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:33:50,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:33:50,289 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-simple-array-sum.wvr.c[2690,2703] [2023-09-01 08:33:50,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:33:50,311 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:33:50,352 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-simple-array-sum.wvr.c[2690,2703] [2023-09-01 08:33:50,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:33:50,370 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:33:50,371 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:33:50,377 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:33:50,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50 WrapperNode [2023-09-01 08:33:50,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:33:50,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:33:50,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:33:50,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:33:50,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,428 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 128 [2023-09-01 08:33:50,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:33:50,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:33:50,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:33:50,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:33:50,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:33:50,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:33:50,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:33:50,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:33:50,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (1/1) ... [2023-09-01 08:33:50,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:33:50,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:33:50,538 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 08:33:50,555 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 08:33:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:33:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:33:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:33:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:33:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:33:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:33:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:33:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:33:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:33:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:33:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:33:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:33:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:33:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:33:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:33:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:33:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:33:50,584 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 08:33:50,707 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:33:50,709 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:33:51,057 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:33:51,098 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:33:51,098 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 08:33:51,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:33:51 BoogieIcfgContainer [2023-09-01 08:33:51,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:33:51,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:33:51,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:33:51,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:33:51,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:33:50" (1/3) ... [2023-09-01 08:33:51,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77075fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:33:51, skipping insertion in model container [2023-09-01 08:33:51,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:33:50" (2/3) ... [2023-09-01 08:33:51,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77075fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:33:51, skipping insertion in model container [2023-09-01 08:33:51,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:33:51" (3/3) ... [2023-09-01 08:33:51,109 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-09-01 08:33:51,116 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:33:51,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:33:51,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 08:33:51,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:33:51,195 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:33:51,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 192 transitions, 408 flow [2023-09-01 08:33:51,412 INFO L130 PetriNetUnfolder]: 16/189 cut-off events. [2023-09-01 08:33:51,412 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:33:51,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 189 events. 16/189 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 185 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2023-09-01 08:33:51,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 192 transitions, 408 flow [2023-09-01 08:33:51,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 357 flow [2023-09-01 08:33:51,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:33:51,446 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 357 flow [2023-09-01 08:33:51,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 357 flow [2023-09-01 08:33:51,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 357 flow [2023-09-01 08:33:51,508 INFO L130 PetriNetUnfolder]: 15/171 cut-off events. [2023-09-01 08:33:51,509 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:33:51,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 171 events. 15/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 183 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 3 conditions per place. [2023-09-01 08:33:51,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 2680 [2023-09-01 08:33:56,648 INFO L134 LiptonReduction]: Checked pairs total: 4485 [2023-09-01 08:33:56,648 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-09-01 08:33:56,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:33:56,664 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;@5d2f8ac0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:33:56,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-09-01 08:33:56,667 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:33:56,667 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:33:56,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:33:56,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:33:56,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:33:56,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:33:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 22949, now seen corresponding path program 1 times [2023-09-01 08:33:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:33:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169163303] [2023-09-01 08:33:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:33:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:33:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:33:56,990 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 08:33:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:33:56,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169163303] [2023-09-01 08:33:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169163303] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:33:56,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:33:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:33:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150281137] [2023-09-01 08:33:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:33:57,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:33:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:33:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:33:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:33:57,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-09-01 08:33:57,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 08:33:57,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:33:57,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-09-01 08:33:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:33:57,605 INFO L130 PetriNetUnfolder]: 3269/4307 cut-off events. [2023-09-01 08:33:57,606 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-09-01 08:33:57,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8805 conditions, 4307 events. 3269/4307 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 19344 event pairs, 1766 based on Foata normal form. 0/1862 useless extension candidates. Maximal degree in co-relation 3753. Up to 2136 conditions per place. [2023-09-01 08:33:57,650 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 59 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-09-01 08:33:57,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 288 flow [2023-09-01 08:33:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:33:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:33:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-09-01 08:33:57,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187214611872146 [2023-09-01 08:33:57,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-09-01 08:33:57,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-09-01 08:33:57,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:33:57,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-09-01 08:33:57,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 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 08:33:57,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:33:57,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:33:57,692 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 89 flow. Second operand 3 states and 568 transitions. [2023-09-01 08:33:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 288 flow [2023-09-01 08:33:57,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:33:57,707 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 116 flow [2023-09-01 08:33:57,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-09-01 08:33:57,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-09-01 08:33:57,717 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 116 flow [2023-09-01 08:33:57,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 08:33:57,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:33:57,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:33:57,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:33:57,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:33:57,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:33:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash 712668, now seen corresponding path program 1 times [2023-09-01 08:33:57,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:33:57,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647358240] [2023-09-01 08:33:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:33:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:33:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:33:57,806 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 08:33:57,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:33:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647358240] [2023-09-01 08:33:57,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647358240] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:33:57,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443198364] [2023-09-01 08:33:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:33:57,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:33:57,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:33:57,810 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 08:33:57,824 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 08:33:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:33:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:33:57,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:33:57,975 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 08:33:57,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:33:58,005 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 08:33:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443198364] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:33:58,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:33:58,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:33:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933261141] [2023-09-01 08:33:58,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:33:58,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:33:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:33:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:33:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:33:58,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-09-01 08:33:58,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 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 08:33:58,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:33:58,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-09-01 08:33:58,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:33:59,128 INFO L130 PetriNetUnfolder]: 8177/10766 cut-off events. [2023-09-01 08:33:59,129 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-09-01 08:33:59,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21794 conditions, 10766 events. 8177/10766 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54774 event pairs, 4415 based on Foata normal form. 0/4686 useless extension candidates. Maximal degree in co-relation 17391. Up to 2134 conditions per place. [2023-09-01 08:33:59,198 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 135 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2023-09-01 08:33:59,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 159 transitions, 726 flow [2023-09-01 08:33:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:33:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:33:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1331 transitions. [2023-09-01 08:33:59,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209393346379648 [2023-09-01 08:33:59,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1331 transitions. [2023-09-01 08:33:59,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1331 transitions. [2023-09-01 08:33:59,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:33:59,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1331 transitions. [2023-09-01 08:33:59,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.14285714285714) internal successors, (1331), 7 states have internal predecessors, (1331), 0 states have call successors, (0), 0 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 08:33:59,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 08:33:59,213 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 08:33:59,213 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 116 flow. Second operand 7 states and 1331 transitions. [2023-09-01 08:33:59,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 159 transitions, 726 flow [2023-09-01 08:33:59,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 159 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:33:59,217 INFO L231 Difference]: Finished difference. Result has 47 places, 55 transitions, 247 flow [2023-09-01 08:33:59,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=47, PETRI_TRANSITIONS=55} [2023-09-01 08:33:59,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-09-01 08:33:59,218 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 55 transitions, 247 flow [2023-09-01 08:33:59,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 168.14285714285714) internal successors, (1177), 7 states have internal predecessors, (1177), 0 states have call successors, (0), 0 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 08:33:59,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:33:59,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:33:59,232 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 08:33:59,425 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 08:33:59,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:33:59,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:33:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash 22093956, now seen corresponding path program 1 times [2023-09-01 08:33:59,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:33:59,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814026647] [2023-09-01 08:33:59,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:33:59,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:33:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:33:59,511 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 08:33:59,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:33:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814026647] [2023-09-01 08:33:59,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814026647] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:33:59,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:33:59,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:33:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540247752] [2023-09-01 08:33:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:33:59,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:33:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:33:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:33:59,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:33:59,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-09-01 08:33:59,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 55 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 08:33:59,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:33:59,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-09-01 08:33:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:00,361 INFO L130 PetriNetUnfolder]: 8171/10758 cut-off events. [2023-09-01 08:34:00,361 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-09-01 08:34:00,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21796 conditions, 10758 events. 8171/10758 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54582 event pairs, 4415 based on Foata normal form. 2/4628 useless extension candidates. Maximal degree in co-relation 13058. Up to 10653 conditions per place. [2023-09-01 08:34:00,428 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 43 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-09-01 08:34:00,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 281 flow [2023-09-01 08:34:00,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:00,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-09-01 08:34:00,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2023-09-01 08:34:00,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-09-01 08:34:00,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-09-01 08:34:00,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:00,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-09-01 08:34:00,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 08:34:00,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:00,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:00,436 INFO L175 Difference]: Start difference. First operand has 47 places, 55 transitions, 247 flow. Second operand 3 states and 535 transitions. [2023-09-01 08:34:00,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 281 flow [2023-09-01 08:34:00,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:00,439 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 176 flow [2023-09-01 08:34:00,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-09-01 08:34:00,440 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-09-01 08:34:00,440 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 176 flow [2023-09-01 08:34:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 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 08:34:00,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:00,441 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:34:00,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:34:00,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:00,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -242503835, now seen corresponding path program 2 times [2023-09-01 08:34:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:00,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071285633] [2023-09-01 08:34:00,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:00,538 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 08:34:00,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071285633] [2023-09-01 08:34:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071285633] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623900544] [2023-09-01 08:34:00,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:34:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:00,541 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 08:34:00,569 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 08:34:00,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:34:00,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:34:00,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:34:00,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:00,639 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 08:34:00,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:00,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623900544] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:00,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:00,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:34:00,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136488005] [2023-09-01 08:34:00,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:00,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:00,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:34:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 365 [2023-09-01 08:34:00,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:00,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:00,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 365 [2023-09-01 08:34:00,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:01,501 INFO L130 PetriNetUnfolder]: 8171/10757 cut-off events. [2023-09-01 08:34:01,501 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-09-01 08:34:01,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21781 conditions, 10757 events. 8171/10757 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 54656 event pairs, 4415 based on Foata normal form. 1/4627 useless extension candidates. Maximal degree in co-relation 21769. Up to 10647 conditions per place. [2023-09-01 08:34:01,560 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 37 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2023-09-01 08:34:01,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 252 flow [2023-09-01 08:34:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-09-01 08:34:01,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922374429223744 [2023-09-01 08:34:01,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-09-01 08:34:01,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-09-01 08:34:01,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:01,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-09-01 08:34:01,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 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 08:34:01,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:01,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:01,568 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 176 flow. Second operand 3 states and 539 transitions. [2023-09-01 08:34:01,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 252 flow [2023-09-01 08:34:01,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:01,570 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 177 flow [2023-09-01 08:34:01,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2023-09-01 08:34:01,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-09-01 08:34:01,571 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 177 flow [2023-09-01 08:34:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:01,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:01,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:34:01,578 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 08:34:01,778 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 08:34:01,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:01,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash -235431933, now seen corresponding path program 1 times [2023-09-01 08:34:01,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:01,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494277317] [2023-09-01 08:34:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:01,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:01,817 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 08:34:01,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:01,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494277317] [2023-09-01 08:34:01,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494277317] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:01,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:01,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:01,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467056895] [2023-09-01 08:34:01,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:01,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:01,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-09-01 08:34:01,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 08:34:01,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:01,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-09-01 08:34:01,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:02,802 INFO L130 PetriNetUnfolder]: 10601/14467 cut-off events. [2023-09-01 08:34:02,802 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2023-09-01 08:34:02,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29357 conditions, 14467 events. 10601/14467 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 80650 event pairs, 4270 based on Foata normal form. 0/7152 useless extension candidates. Maximal degree in co-relation 29344. Up to 9513 conditions per place. [2023-09-01 08:34:02,888 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 64 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-09-01 08:34:02,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 358 flow [2023-09-01 08:34:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2023-09-01 08:34:02,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196347031963471 [2023-09-01 08:34:02,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2023-09-01 08:34:02,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2023-09-01 08:34:02,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:02,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2023-09-01 08:34:02,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 08:34:02,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:02,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:02,897 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 177 flow. Second operand 3 states and 569 transitions. [2023-09-01 08:34:02,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 358 flow [2023-09-01 08:34:02,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:02,900 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 179 flow [2023-09-01 08:34:02,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2023-09-01 08:34:02,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-09-01 08:34:02,902 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 179 flow [2023-09-01 08:34:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 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 08:34:02,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:02,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:34:02,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:02,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1291545728, now seen corresponding path program 1 times [2023-09-01 08:34:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:02,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421372525] [2023-09-01 08:34:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:02,969 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 08:34:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421372525] [2023-09-01 08:34:02,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421372525] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:02,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531743638] [2023-09-01 08:34:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:02,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:02,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:02,972 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 08:34:02,998 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 08:34:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:03,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:34:03,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:03,106 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 08:34:03,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:03,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531743638] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:03,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:03,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:34:03,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541842921] [2023-09-01 08:34:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:03,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:34:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:03,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:34:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:34:03,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-09-01 08:34:03,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 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 08:34:03,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:03,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-09-01 08:34:03,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:04,521 INFO L130 PetriNetUnfolder]: 12680/17496 cut-off events. [2023-09-01 08:34:04,522 INFO L131 PetriNetUnfolder]: For 3010/3010 co-relation queries the response was YES. [2023-09-01 08:34:04,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 17496 events. 12680/17496 cut-off events. For 3010/3010 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 103097 event pairs, 5850 based on Foata normal form. 430/10368 useless extension candidates. Maximal degree in co-relation 37858. Up to 11300 conditions per place. [2023-09-01 08:34:04,676 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 120 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-09-01 08:34:04,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 134 transitions, 668 flow [2023-09-01 08:34:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:34:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:34:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1241 transitions. [2023-09-01 08:34:04,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-09-01 08:34:04,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1241 transitions. [2023-09-01 08:34:04,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1241 transitions. [2023-09-01 08:34:04,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:04,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1241 transitions. [2023-09-01 08:34:04,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.28571428571428) internal successors, (1241), 7 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 08:34:04,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 08:34:04,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 08:34:04,689 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 179 flow. Second operand 7 states and 1241 transitions. [2023-09-01 08:34:04,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 134 transitions, 668 flow [2023-09-01 08:34:04,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 134 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:04,699 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 236 flow [2023-09-01 08:34:04,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-09-01 08:34:04,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-09-01 08:34:04,700 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 236 flow [2023-09-01 08:34:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 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 08:34:04,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:04,701 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:34:04,709 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 08:34:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:04,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:04,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1299441574, now seen corresponding path program 1 times [2023-09-01 08:34:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106937676] [2023-09-01 08:34:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:05,046 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 08:34:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106937676] [2023-09-01 08:34:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106937676] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:05,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:34:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739615769] [2023-09-01 08:34:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:05,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:34:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:34:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:34:05,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 365 [2023-09-01 08:34:05,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 08:34:05,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:05,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 365 [2023-09-01 08:34:05,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:05,876 INFO L130 PetriNetUnfolder]: 7971/10985 cut-off events. [2023-09-01 08:34:05,876 INFO L131 PetriNetUnfolder]: For 2542/3028 co-relation queries the response was YES. [2023-09-01 08:34:05,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24254 conditions, 10985 events. 7971/10985 cut-off events. For 2542/3028 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 61206 event pairs, 5115 based on Foata normal form. 487/6546 useless extension candidates. Maximal degree in co-relation 24237. Up to 10028 conditions per place. [2023-09-01 08:34:05,953 INFO L137 encePairwiseOnDemand]: 360/365 looper letters, 59 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2023-09-01 08:34:05,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 411 flow [2023-09-01 08:34:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:34:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:34:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-09-01 08:34:05,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815068493150685 [2023-09-01 08:34:05,956 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-09-01 08:34:05,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-09-01 08:34:05,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:05,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-09-01 08:34:05,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 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 08:34:05,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 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 08:34:05,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 365.0) internal successors, (1825), 5 states have internal predecessors, (1825), 0 states have call successors, (0), 0 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 08:34:05,961 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 236 flow. Second operand 4 states and 703 transitions. [2023-09-01 08:34:05,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 411 flow [2023-09-01 08:34:05,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 400 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:05,964 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 228 flow [2023-09-01 08:34:05,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-09-01 08:34:05,965 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-09-01 08:34:05,965 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 228 flow [2023-09-01 08:34:05,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 08:34:05,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:05,966 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:34:05,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:34:05,966 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:05,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:05,967 INFO L85 PathProgramCache]: Analyzing trace with hash -890786865, now seen corresponding path program 1 times [2023-09-01 08:34:05,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:05,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834015242] [2023-09-01 08:34:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:05,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:06,084 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 08:34:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:06,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834015242] [2023-09-01 08:34:06,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834015242] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:06,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504843006] [2023-09-01 08:34:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:06,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:06,092 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 08:34:06,115 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 08:34:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:06,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:34:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:06,250 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 08:34:06,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:06,316 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 08:34:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504843006] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:06,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:06,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 08:34:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720763045] [2023-09-01 08:34:06,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:34:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:34:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:34:06,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 365 [2023-09-01 08:34:06,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 228 flow. Second operand has 14 states, 14 states have (on average 160.28571428571428) internal successors, (2244), 14 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 08:34:06,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:06,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 365 [2023-09-01 08:34:06,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:07,532 INFO L130 PetriNetUnfolder]: 9336/12866 cut-off events. [2023-09-01 08:34:07,533 INFO L131 PetriNetUnfolder]: For 1852/2419 co-relation queries the response was YES. [2023-09-01 08:34:07,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27984 conditions, 12866 events. 9336/12866 cut-off events. For 1852/2419 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 72515 event pairs, 5962 based on Foata normal form. 568/7772 useless extension candidates. Maximal degree in co-relation 27967. Up to 7512 conditions per place. [2023-09-01 08:34:07,616 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 106 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2023-09-01 08:34:07,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 679 flow [2023-09-01 08:34:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:34:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:34:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1706 transitions. [2023-09-01 08:34:07,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673972602739726 [2023-09-01 08:34:07,621 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1706 transitions. [2023-09-01 08:34:07,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1706 transitions. [2023-09-01 08:34:07,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:07,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1706 transitions. [2023-09-01 08:34:07,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 170.6) internal successors, (1706), 10 states have internal predecessors, (1706), 0 states have call successors, (0), 0 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 08:34:07,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 365.0) internal successors, (4015), 11 states have internal predecessors, (4015), 0 states have call successors, (0), 0 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 08:34:07,631 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 365.0) internal successors, (4015), 11 states have internal predecessors, (4015), 0 states have call successors, (0), 0 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 08:34:07,632 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 228 flow. Second operand 10 states and 1706 transitions. [2023-09-01 08:34:07,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 679 flow [2023-09-01 08:34:07,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 126 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:07,635 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 290 flow [2023-09-01 08:34:07,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-09-01 08:34:07,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-09-01 08:34:07,638 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 290 flow [2023-09-01 08:34:07,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 160.28571428571428) internal successors, (2244), 14 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 08:34:07,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:07,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:07,647 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 08:34:07,847 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 08:34:07,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:07,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash 105030115, now seen corresponding path program 1 times [2023-09-01 08:34:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:07,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571401375] [2023-09-01 08:34:07,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:07,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:07,887 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 08:34:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571401375] [2023-09-01 08:34:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571401375] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189548359] [2023-09-01 08:34:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:07,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:07,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-09-01 08:34:07,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 08:34:07,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:07,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-09-01 08:34:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:08,936 INFO L130 PetriNetUnfolder]: 13854/19172 cut-off events. [2023-09-01 08:34:08,936 INFO L131 PetriNetUnfolder]: For 5368/6735 co-relation queries the response was YES. [2023-09-01 08:34:09,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42641 conditions, 19172 events. 13854/19172 cut-off events. For 5368/6735 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 112902 event pairs, 5628 based on Foata normal form. 1367/13099 useless extension candidates. Maximal degree in co-relation 42620. Up to 12611 conditions per place. [2023-09-01 08:34:09,083 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 69 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 08:34:09,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 492 flow [2023-09-01 08:34:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-09-01 08:34:09,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178082191780822 [2023-09-01 08:34:09,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-09-01 08:34:09,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-09-01 08:34:09,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:09,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-09-01 08:34:09,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 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 08:34:09,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:09,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:09,089 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 290 flow. Second operand 3 states and 567 transitions. [2023-09-01 08:34:09,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 492 flow [2023-09-01 08:34:09,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 461 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 08:34:09,094 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 273 flow [2023-09-01 08:34:09,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-09-01 08:34:09,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-09-01 08:34:09,095 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 273 flow [2023-09-01 08:34:09,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 08:34:09,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:09,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:09,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 08:34:09,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:09,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1852484239, now seen corresponding path program 1 times [2023-09-01 08:34:09,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:09,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248065995] [2023-09-01 08:34:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:09,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:34:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248065995] [2023-09-01 08:34:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248065995] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:09,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416799000] [2023-09-01 08:34:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:09,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-09-01 08:34:09,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 08:34:09,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:09,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-09-01 08:34:09,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:10,104 INFO L130 PetriNetUnfolder]: 12826/17706 cut-off events. [2023-09-01 08:34:10,104 INFO L131 PetriNetUnfolder]: For 3885/3885 co-relation queries the response was YES. [2023-09-01 08:34:10,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42902 conditions, 17706 events. 12826/17706 cut-off events. For 3885/3885 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 107476 event pairs, 807 based on Foata normal form. 0/11182 useless extension candidates. Maximal degree in co-relation 42881. Up to 15808 conditions per place. [2023-09-01 08:34:10,215 INFO L137 encePairwiseOnDemand]: 363/365 looper letters, 66 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-09-01 08:34:10,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 451 flow [2023-09-01 08:34:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-09-01 08:34:10,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123287671232877 [2023-09-01 08:34:10,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-09-01 08:34:10,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-09-01 08:34:10,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:10,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-09-01 08:34:10,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 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 08:34:10,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:10,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:10,223 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 273 flow. Second operand 3 states and 561 transitions. [2023-09-01 08:34:10,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 451 flow [2023-09-01 08:34:10,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:10,238 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 271 flow [2023-09-01 08:34:10,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-09-01 08:34:10,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-09-01 08:34:10,238 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 271 flow [2023-09-01 08:34:10,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 08:34:10,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:10,239 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 08:34:10,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:34:10,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:10,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash -68391738, now seen corresponding path program 2 times [2023-09-01 08:34:10,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:10,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148006403] [2023-09-01 08:34:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:10,368 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 08:34:10,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:10,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148006403] [2023-09-01 08:34:10,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148006403] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:10,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083908563] [2023-09-01 08:34:10,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:34:10,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:10,370 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 08:34:10,388 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 08:34:10,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:34:10,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:34:10,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:34:10,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:10,486 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 08:34:10,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083908563] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:10,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-09-01 08:34:10,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583128530] [2023-09-01 08:34:10,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:10,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:34:10,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:10,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:34:10,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:34:10,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-09-01 08:34:10,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 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 08:34:10,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:10,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-09-01 08:34:10,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:11,330 INFO L130 PetriNetUnfolder]: 9691/13566 cut-off events. [2023-09-01 08:34:11,330 INFO L131 PetriNetUnfolder]: For 5312/6514 co-relation queries the response was YES. [2023-09-01 08:34:11,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30945 conditions, 13566 events. 9691/13566 cut-off events. For 5312/6514 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 80041 event pairs, 6534 based on Foata normal form. 1536/10032 useless extension candidates. Maximal degree in co-relation 30924. Up to 13472 conditions per place. [2023-09-01 08:34:11,395 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 46 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-09-01 08:34:11,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 346 flow [2023-09-01 08:34:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-09-01 08:34:11,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849315068493151 [2023-09-01 08:34:11,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-09-01 08:34:11,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-09-01 08:34:11,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:11,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-09-01 08:34:11,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:11,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:11,401 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:11,401 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 271 flow. Second operand 3 states and 531 transitions. [2023-09-01 08:34:11,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 346 flow [2023-09-01 08:34:11,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 320 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-09-01 08:34:11,403 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 228 flow [2023-09-01 08:34:11,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-09-01 08:34:11,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-09-01 08:34:11,404 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 228 flow [2023-09-01 08:34:11,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.25) internal successors, (673), 4 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 08:34:11,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:11,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:11,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:34:11,610 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,SelfDestructingSolverStorable10 [2023-09-01 08:34:11,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:11,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1973026507, now seen corresponding path program 1 times [2023-09-01 08:34:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546356225] [2023-09-01 08:34:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:11,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:11,657 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 08:34:11,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546356225] [2023-09-01 08:34:11,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546356225] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:11,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:11,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:11,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894498681] [2023-09-01 08:34:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:11,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:11,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:11,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-09-01 08:34:11,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 08:34:11,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:11,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-09-01 08:34:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:12,773 INFO L130 PetriNetUnfolder]: 13226/18817 cut-off events. [2023-09-01 08:34:12,773 INFO L131 PetriNetUnfolder]: For 5192/6314 co-relation queries the response was YES. [2023-09-01 08:34:12,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43077 conditions, 18817 events. 13226/18817 cut-off events. For 5192/6314 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 117496 event pairs, 6714 based on Foata normal form. 1122/13923 useless extension candidates. Maximal degree in co-relation 43060. Up to 12722 conditions per place. [2023-09-01 08:34:12,906 INFO L137 encePairwiseOnDemand]: 361/365 looper letters, 64 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-09-01 08:34:12,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 412 flow [2023-09-01 08:34:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-09-01 08:34:12,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-09-01 08:34:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-09-01 08:34:12,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-09-01 08:34:12,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:12,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-09-01 08:34:12,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 08:34:12,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:12,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:12,912 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 228 flow. Second operand 3 states and 560 transitions. [2023-09-01 08:34:12,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 412 flow [2023-09-01 08:34:12,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:12,915 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 241 flow [2023-09-01 08:34:12,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-09-01 08:34:12,916 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-09-01 08:34:12,916 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 241 flow [2023-09-01 08:34:12,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 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 08:34:12,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:12,917 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 08:34:12,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:12,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:12,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2145229933, now seen corresponding path program 1 times [2023-09-01 08:34:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:12,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843552464] [2023-09-01 08:34:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:12,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:12,991 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 08:34:12,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:12,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843552464] [2023-09-01 08:34:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843552464] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:12,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 08:34:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349387339] [2023-09-01 08:34:12,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:34:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:34:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:34:13,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-09-01 08:34:13,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 08:34:13,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:13,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-09-01 08:34:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:14,299 INFO L130 PetriNetUnfolder]: 14947/20788 cut-off events. [2023-09-01 08:34:14,300 INFO L131 PetriNetUnfolder]: For 6752/7767 co-relation queries the response was YES. [2023-09-01 08:34:14,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50694 conditions, 20788 events. 14947/20788 cut-off events. For 6752/7767 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 122548 event pairs, 10379 based on Foata normal form. 1015/14785 useless extension candidates. Maximal degree in co-relation 50676. Up to 20162 conditions per place. [2023-09-01 08:34:14,409 INFO L137 encePairwiseOnDemand]: 358/365 looper letters, 69 selfloop transitions, 12 changer transitions 2/86 dead transitions. [2023-09-01 08:34:14,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 510 flow [2023-09-01 08:34:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:34:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:34:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2023-09-01 08:34:14,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745205479452055 [2023-09-01 08:34:14,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2023-09-01 08:34:14,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2023-09-01 08:34:14,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:14,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2023-09-01 08:34:14,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 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 08:34:14,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 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 08:34:14,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 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 08:34:14,417 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 241 flow. Second operand 5 states and 866 transitions. [2023-09-01 08:34:14,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 510 flow [2023-09-01 08:34:14,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:14,425 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 276 flow [2023-09-01 08:34:14,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-09-01 08:34:14,426 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-09-01 08:34:14,426 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 276 flow [2023-09-01 08:34:14,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 08:34:14,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:14,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:14,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:34:14,427 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:14,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1562737787, now seen corresponding path program 1 times [2023-09-01 08:34:14,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:14,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962230364] [2023-09-01 08:34:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:34:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:14,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962230364] [2023-09-01 08:34:14,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962230364] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:14,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059785882] [2023-09-01 08:34:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:14,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:14,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:14,473 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 08:34:14,499 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 08:34:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:14,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:34:14,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:34:14,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:34:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059785882] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:14,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:14,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 08:34:14,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733905139] [2023-09-01 08:34:14,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:14,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:34:14,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:14,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:34:14,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:34:14,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-09-01 08:34:14,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 276 flow. Second operand has 13 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 0 states have call successors, (0), 0 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 08:34:14,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:14,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-09-01 08:34:14,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:16,322 INFO L130 PetriNetUnfolder]: 11991/16788 cut-off events. [2023-09-01 08:34:16,322 INFO L131 PetriNetUnfolder]: For 6742/7582 co-relation queries the response was YES. [2023-09-01 08:34:16,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41634 conditions, 16788 events. 11991/16788 cut-off events. For 6742/7582 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 102225 event pairs, 854 based on Foata normal form. 1072/13620 useless extension candidates. Maximal degree in co-relation 41613. Up to 4236 conditions per place. [2023-09-01 08:34:16,445 INFO L137 encePairwiseOnDemand]: 355/365 looper letters, 200 selfloop transitions, 22 changer transitions 9/234 dead transitions. [2023-09-01 08:34:16,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 234 transitions, 1291 flow [2023-09-01 08:34:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 08:34:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 08:34:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2530 transitions. [2023-09-01 08:34:16,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621004566210046 [2023-09-01 08:34:16,452 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2530 transitions. [2023-09-01 08:34:16,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2530 transitions. [2023-09-01 08:34:16,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:16,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2530 transitions. [2023-09-01 08:34:16,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 168.66666666666666) internal successors, (2530), 15 states have internal predecessors, (2530), 0 states have call successors, (0), 0 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 08:34:16,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 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 08:34:16,469 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 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 08:34:16,469 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 276 flow. Second operand 15 states and 2530 transitions. [2023-09-01 08:34:16,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 234 transitions, 1291 flow [2023-09-01 08:34:16,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 234 transitions, 1272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:16,488 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 320 flow [2023-09-01 08:34:16,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=320, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-09-01 08:34:16,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-09-01 08:34:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 320 flow [2023-09-01 08:34:16,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.53846153846155) internal successors, (2048), 13 states have internal predecessors, (2048), 0 states have call successors, (0), 0 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 08:34:16,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:16,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:16,501 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 08:34:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:16,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:16,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1997842472, now seen corresponding path program 1 times [2023-09-01 08:34:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119197363] [2023-09-01 08:34:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:16,751 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 08:34:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119197363] [2023-09-01 08:34:16,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119197363] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567209627] [2023-09-01 08:34:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:16,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:16,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:16,753 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 08:34:16,783 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 08:34:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:16,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:34:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:16,897 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 08:34:16,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:34:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567209627] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:16,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:34:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-09-01 08:34:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688195405] [2023-09-01 08:34:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 08:34:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 08:34:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:34:16,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-09-01 08:34:16,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:16,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:16,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-09-01 08:34:16,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:17,855 INFO L130 PetriNetUnfolder]: 9368/13465 cut-off events. [2023-09-01 08:34:17,856 INFO L131 PetriNetUnfolder]: For 9888/10565 co-relation queries the response was YES. [2023-09-01 08:34:17,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36219 conditions, 13465 events. 9368/13465 cut-off events. For 9888/10565 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 80356 event pairs, 7108 based on Foata normal form. 677/11280 useless extension candidates. Maximal degree in co-relation 36197. Up to 13318 conditions per place. [2023-09-01 08:34:17,965 INFO L137 encePairwiseOnDemand]: 357/365 looper letters, 41 selfloop transitions, 8 changer transitions 27/79 dead transitions. [2023-09-01 08:34:17,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 528 flow [2023-09-01 08:34:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 08:34:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 08:34:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 856 transitions. [2023-09-01 08:34:17,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469041095890411 [2023-09-01 08:34:17,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 856 transitions. [2023-09-01 08:34:17,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 856 transitions. [2023-09-01 08:34:17,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:17,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 856 transitions. [2023-09-01 08:34:17,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.2) internal successors, (856), 5 states have internal predecessors, (856), 0 states have call successors, (0), 0 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 08:34:17,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 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 08:34:17,973 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 0 states have call successors, (0), 0 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 08:34:17,973 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 320 flow. Second operand 5 states and 856 transitions. [2023-09-01 08:34:17,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 528 flow [2023-09-01 08:34:17,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 496 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 08:34:17,991 INFO L231 Difference]: Finished difference. Result has 77 places, 52 transitions, 267 flow [2023-09-01 08:34:17,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=52} [2023-09-01 08:34:17,991 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2023-09-01 08:34:17,992 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 267 flow [2023-09-01 08:34:17,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:17,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:17,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:18,007 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 08:34:18,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:18,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:18,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:18,201 INFO L85 PathProgramCache]: Analyzing trace with hash -568638646, now seen corresponding path program 1 times [2023-09-01 08:34:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:18,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338739242] [2023-09-01 08:34:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:18,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:34:18,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338739242] [2023-09-01 08:34:18,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338739242] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:18,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492530240] [2023-09-01 08:34:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:18,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:18,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:18,251 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 08:34:18,263 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 08:34:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:18,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 08:34:18,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:34:18,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:34:18,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492530240] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:18,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:18,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-09-01 08:34:18,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319777304] [2023-09-01 08:34:18,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:18,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:34:18,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:18,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:34:18,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:34:18,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-09-01 08:34:18,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 52 transitions, 267 flow. Second operand has 13 states, 13 states have (on average 157.84615384615384) internal successors, (2052), 13 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 08:34:18,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:18,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-09-01 08:34:18,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:19,855 INFO L130 PetriNetUnfolder]: 10609/15067 cut-off events. [2023-09-01 08:34:19,855 INFO L131 PetriNetUnfolder]: For 10392/11083 co-relation queries the response was YES. [2023-09-01 08:34:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42641 conditions, 15067 events. 10609/15067 cut-off events. For 10392/11083 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 90216 event pairs, 2405 based on Foata normal form. 827/13622 useless extension candidates. Maximal degree in co-relation 42617. Up to 4395 conditions per place. [2023-09-01 08:34:19,970 INFO L137 encePairwiseOnDemand]: 353/365 looper letters, 93 selfloop transitions, 15 changer transitions 76/186 dead transitions. [2023-09-01 08:34:19,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1114 flow [2023-09-01 08:34:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 08:34:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 08:34:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2324 transitions. [2023-09-01 08:34:19,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2023-09-01 08:34:19,975 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2324 transitions. [2023-09-01 08:34:19,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2324 transitions. [2023-09-01 08:34:19,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:19,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2324 transitions. [2023-09-01 08:34:19,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 08:34:19,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 365.0) internal successors, (5475), 15 states have internal predecessors, (5475), 0 states have call successors, (0), 0 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 08:34:19,987 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 365.0) internal successors, (5475), 15 states have internal predecessors, (5475), 0 states have call successors, (0), 0 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 08:34:19,988 INFO L175 Difference]: Start difference. First operand has 77 places, 52 transitions, 267 flow. Second operand 14 states and 2324 transitions. [2023-09-01 08:34:19,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1114 flow [2023-09-01 08:34:20,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 186 transitions, 1028 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-09-01 08:34:20,071 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 254 flow [2023-09-01 08:34:20,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=254, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2023-09-01 08:34:20,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2023-09-01 08:34:20,071 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 254 flow [2023-09-01 08:34:20,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.84615384615384) internal successors, (2052), 13 states have internal predecessors, (2052), 0 states have call successors, (0), 0 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 08:34:20,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:20,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:20,079 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 08:34:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:34:20,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:20,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1031856145, now seen corresponding path program 1 times [2023-09-01 08:34:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386990350] [2023-09-01 08:34:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:34:20,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386990350] [2023-09-01 08:34:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386990350] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943537047] [2023-09-01 08:34:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:20,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:20,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:20,336 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 08:34:20,349 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 08:34:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:20,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:20,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:34:20,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:34:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943537047] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:20,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 08:34:20,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522204567] [2023-09-01 08:34:20,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:20,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:34:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:20,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:34:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:34:20,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-09-01 08:34:20,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 08:34:20,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:20,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-09-01 08:34:20,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:22,551 INFO L130 PetriNetUnfolder]: 22603/31115 cut-off events. [2023-09-01 08:34:22,551 INFO L131 PetriNetUnfolder]: For 26408/28367 co-relation queries the response was YES. [2023-09-01 08:34:22,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92332 conditions, 31115 events. 22603/31115 cut-off events. For 26408/28367 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 190135 event pairs, 4353 based on Foata normal form. 1959/29282 useless extension candidates. Maximal degree in co-relation 92310. Up to 8925 conditions per place. [2023-09-01 08:34:22,757 INFO L137 encePairwiseOnDemand]: 362/365 looper letters, 135 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2023-09-01 08:34:22,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 938 flow [2023-09-01 08:34:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:34:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:34:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-09-01 08:34:22,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155251141552512 [2023-09-01 08:34:22,759 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-09-01 08:34:22,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-09-01 08:34:22,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:22,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-09-01 08:34:22,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 0 states have call successors, (0), 0 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 08:34:22,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 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 08:34:22,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 365.0) internal successors, (2555), 7 states have internal predecessors, (2555), 0 states have call successors, (0), 0 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 08:34:22,765 INFO L175 Difference]: Start difference. First operand has 76 places, 48 transitions, 254 flow. Second operand 6 states and 1129 transitions. [2023-09-01 08:34:22,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 938 flow [2023-09-01 08:34:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 142 transitions, 868 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-09-01 08:34:22,811 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 248 flow [2023-09-01 08:34:22,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-09-01 08:34:22,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2023-09-01 08:34:22,812 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 248 flow [2023-09-01 08:34:22,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 08:34:22,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:22,813 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:22,821 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 08:34:23,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:34:23,019 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:23,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1755100232, now seen corresponding path program 1 times [2023-09-01 08:34:23,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:23,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976507796] [2023-09-01 08:34:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:23,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:34:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976507796] [2023-09-01 08:34:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976507796] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608099827] [2023-09-01 08:34:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:23,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:23,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 365 [2023-09-01 08:34:23,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 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 08:34:23,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:23,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 365 [2023-09-01 08:34:23,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:24,707 INFO L130 PetriNetUnfolder]: 18151/25583 cut-off events. [2023-09-01 08:34:24,707 INFO L131 PetriNetUnfolder]: For 26558/27713 co-relation queries the response was YES. [2023-09-01 08:34:24,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73772 conditions, 25583 events. 18151/25583 cut-off events. For 26558/27713 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 159860 event pairs, 1305 based on Foata normal form. 2427/25442 useless extension candidates. Maximal degree in co-relation 73753. Up to 22944 conditions per place. [2023-09-01 08:34:24,811 INFO L137 encePairwiseOnDemand]: 363/365 looper letters, 63 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-09-01 08:34:24,811 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 441 flow [2023-09-01 08:34:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-09-01 08:34:24,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041095890410959 [2023-09-01 08:34:24,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-09-01 08:34:24,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-09-01 08:34:24,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:24,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-09-01 08:34:24,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 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 08:34:24,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:24,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 08:34:24,816 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 248 flow. Second operand 3 states and 552 transitions. [2023-09-01 08:34:24,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 441 flow [2023-09-01 08:34:24,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 415 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:24,904 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 217 flow [2023-09-01 08:34:24,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-09-01 08:34:24,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2023-09-01 08:34:24,905 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 217 flow [2023-09-01 08:34:24,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 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 08:34:24,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:24,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:24,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 08:34:24,906 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:24,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1270755781, now seen corresponding path program 2 times [2023-09-01 08:34:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011789811] [2023-09-01 08:34:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:34:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011789811] [2023-09-01 08:34:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011789811] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096212466] [2023-09-01 08:34:24,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:34:24,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:24,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:24,994 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 08:34:24,996 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 08:34:25,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:34:25,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:34:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:25,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:34:25,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:34:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096212466] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:25,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-09-01 08:34:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988880] [2023-09-01 08:34:25,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:34:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:34:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:34:25,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 365 [2023-09-01 08:34:25,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 217 flow. Second operand has 7 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 08:34:25,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:25,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 365 [2023-09-01 08:34:25,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:27,056 INFO L130 PetriNetUnfolder]: 25039/35015 cut-off events. [2023-09-01 08:34:27,056 INFO L131 PetriNetUnfolder]: For 25550/27089 co-relation queries the response was YES. [2023-09-01 08:34:27,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95009 conditions, 35015 events. 25039/35015 cut-off events. For 25550/27089 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 218924 event pairs, 3849 based on Foata normal form. 1539/33350 useless extension candidates. Maximal degree in co-relation 94990. Up to 8028 conditions per place. [2023-09-01 08:34:27,325 INFO L137 encePairwiseOnDemand]: 359/365 looper letters, 97 selfloop transitions, 8 changer transitions 20/127 dead transitions. [2023-09-01 08:34:27,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 779 flow [2023-09-01 08:34:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:34:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:34:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2023-09-01 08:34:27,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49158512720156555 [2023-09-01 08:34:27,328 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2023-09-01 08:34:27,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2023-09-01 08:34:27,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:27,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2023-09-01 08:34:27,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:27,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 08:34:27,333 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 365.0) internal successors, (2920), 8 states have internal predecessors, (2920), 0 states have call successors, (0), 0 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 08:34:27,333 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 217 flow. Second operand 7 states and 1256 transitions. [2023-09-01 08:34:27,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 779 flow [2023-09-01 08:34:27,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 127 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:34:27,469 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 232 flow [2023-09-01 08:34:27,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-09-01 08:34:27,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2023-09-01 08:34:27,470 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 232 flow [2023-09-01 08:34:27,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.57142857142858) internal successors, (1201), 7 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 08:34:27,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:27,470 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:34:27,479 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 08:34:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:27,677 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-09-01 08:34:27,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash 455261473, now seen corresponding path program 2 times [2023-09-01 08:34:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:27,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999894854] [2023-09-01 08:34:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:27,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-09-01 08:34:27,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999894854] [2023-09-01 08:34:27,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999894854] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966361357] [2023-09-01 08:34:27,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:34:27,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:27,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:27,810 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 08:34:27,813 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 08:34:27,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:34:27,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:34:27,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:27,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-09-01 08:34:27,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-09-01 08:34:27,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966361357] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:27,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:27,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 2, 2] total 7 [2023-09-01 08:34:27,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957073846] [2023-09-01 08:34:27,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:27,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:34:28,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:34:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:34:28,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 365 [2023-09-01 08:34:28,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 232 flow. Second operand has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 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 08:34:28,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:28,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 365 [2023-09-01 08:34:28,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:30,854 INFO L130 PetriNetUnfolder]: 28510/38915 cut-off events. [2023-09-01 08:34:30,855 INFO L131 PetriNetUnfolder]: For 39142/42124 co-relation queries the response was YES. [2023-09-01 08:34:31,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114915 conditions, 38915 events. 28510/38915 cut-off events. For 39142/42124 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 234521 event pairs, 5582 based on Foata normal form. 3922/38905 useless extension candidates. Maximal degree in co-relation 114894. Up to 12732 conditions per place. [2023-09-01 08:34:31,083 INFO L137 encePairwiseOnDemand]: 356/365 looper letters, 0 selfloop transitions, 0 changer transitions 161/161 dead transitions. [2023-09-01 08:34:31,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 161 transitions, 1051 flow [2023-09-01 08:34:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 08:34:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 08:34:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2116 transitions. [2023-09-01 08:34:31,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459430979978925 [2023-09-01 08:34:31,086 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2116 transitions. [2023-09-01 08:34:31,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2116 transitions. [2023-09-01 08:34:31,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:31,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2116 transitions. [2023-09-01 08:34:31,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 162.76923076923077) internal successors, (2116), 13 states have internal predecessors, (2116), 0 states have call successors, (0), 0 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 08:34:31,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 365.0) internal successors, (5110), 14 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 08:34:31,094 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 365.0) internal successors, (5110), 14 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 08:34:31,094 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 232 flow. Second operand 13 states and 2116 transitions. [2023-09-01 08:34:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 161 transitions, 1051 flow [2023-09-01 08:34:31,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 161 transitions, 938 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-09-01 08:34:31,472 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-09-01 08:34:31,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-09-01 08:34:31,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-09-01 08:34:31,473 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-09-01 08:34:31,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 158.0) internal successors, (1422), 9 states have internal predecessors, (1422), 0 states have call successors, (0), 0 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 08:34:31,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-09-01 08:34:31,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-09-01 08:34:31,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-09-01 08:34:31,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-09-01 08:34:31,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-09-01 08:34:31,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-09-01 08:34:31,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-09-01 08:34:31,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-09-01 08:34:31,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-09-01 08:34:31,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-09-01 08:34:31,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-09-01 08:34:31,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-09-01 08:34:31,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-09-01 08:34:31,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-09-01 08:34:31,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-09-01 08:34:31,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-09-01 08:34:31,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-09-01 08:34:31,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-09-01 08:34:31,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-09-01 08:34:31,485 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 08:34:31,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:31,686 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 08:34:31,691 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:34:31,691 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:34:31,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:34:31 BasicIcfg [2023-09-01 08:34:31,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:34:31,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:34:31,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:34:31,695 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:34:31,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:33:51" (3/4) ... [2023-09-01 08:34:31,698 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:34:31,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:34:31,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:34:31,703 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 08:34:31,711 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-09-01 08:34:31,712 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:34:31,712 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:34:31,712 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:34:31,755 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:34:31,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:34:31,756 INFO L158 Benchmark]: Toolchain (without parser) took 41702.64ms. Allocated memory was 77.6MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 55.1MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-09-01 08:34:31,756 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:34:31,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.85ms. Allocated memory is still 77.6MB. Free memory was 55.1MB in the beginning and 43.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:34:31,759 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.68ms. Allocated memory is still 77.6MB. Free memory was 43.4MB in the beginning and 41.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:34:31,760 INFO L158 Benchmark]: Boogie Preprocessor took 61.02ms. Allocated memory is still 77.6MB. Free memory was 41.5MB in the beginning and 39.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:34:31,760 INFO L158 Benchmark]: RCFGBuilder took 608.77ms. Allocated memory is still 77.6MB. Free memory was 39.9MB in the beginning and 39.7MB in the end (delta: 158.1kB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-09-01 08:34:31,761 INFO L158 Benchmark]: TraceAbstraction took 40591.76ms. Allocated memory was 77.6MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 38.9MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2023-09-01 08:34:31,761 INFO L158 Benchmark]: Witness Printer took 60.72ms. Allocated memory is still 5.6GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:34:31,763 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 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.85ms. Allocated memory is still 77.6MB. Free memory was 55.1MB in the beginning and 43.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.68ms. Allocated memory is still 77.6MB. Free memory was 43.4MB in the beginning and 41.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.02ms. Allocated memory is still 77.6MB. Free memory was 41.5MB in the beginning and 39.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.77ms. Allocated memory is still 77.6MB. Free memory was 39.9MB in the beginning and 39.7MB in the end (delta: 158.1kB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 40591.76ms. Allocated memory was 77.6MB in the beginning and 5.6GB in the end (delta: 5.5GB). Free memory was 38.9MB in the beginning and 3.6GB in the end (delta: -3.6GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 60.72ms. Allocated memory is still 5.6GB. Free memory was 3.6GB in the beginning and 3.6GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 166 PlacesBefore, 41 PlacesAfterwards, 171 TransitionsBefore, 37 TransitionsAfterwards, 2680 CoEnabledTransitionPairs, 7 FixpointIterations, 88 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 173 TotalNumberOfCompositions, 4485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3188, independent: 3075, independent conditional: 0, independent unconditional: 3075, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1470, independent: 1445, independent conditional: 0, independent unconditional: 1445, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3188, independent: 1630, independent conditional: 0, independent unconditional: 1630, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 1470, unknown conditional: 0, unknown unconditional: 1470] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: 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: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: 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, 224 locations, 19 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: 40.4s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4120 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3492 mSDsluCounter, 1188 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 966 mSDsCounter, 235 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6160 IncrementalHoareTripleChecker+Invalid, 6395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 235 mSolverCounterUnsat, 222 mSDtfsCounter, 6160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=14, InterpolantAutomatonStates: 120, 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, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 334 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1913 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 38 InterpolantComputations, 13 PerfectInterpolantSequences, 207/276 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:34:31,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE