./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:20:45,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:20:45,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:20:45,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:20:45,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:20:45,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:20:45,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:20:45,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:20:45,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:20:45,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:20:45,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:20:45,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:20:45,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:20:45,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:20:45,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:20:45,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:20:45,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:20:45,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:20:45,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:20:45,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:20:45,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:20:45,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:20:45,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:20:45,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:20:45,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:20:45,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:20:45,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:20:45,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:20:45,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:20:45,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:20:45,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:20:45,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:20:45,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:20:45,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:20:45,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:20:45,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:20:45,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:20:45,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:20:45,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:20:45,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:20:45,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:20:45,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:20:45,432 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:20:45,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:20:45,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:20:45,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:20:45,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:20:45,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:20:45,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:20:45,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:20:45,435 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:20:45,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:20:45,436 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:20:45,437 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:20:45,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:20:45,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:20:45,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:20:45,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:20:45,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:20:45,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:20:45,438 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:20:45,438 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:20:45,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:20:45,438 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:20:45,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:20:45,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:20:45,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:20:45,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:20:45,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:20:45,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:20:45,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:20:45,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:20:45,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:20:45,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:20:45,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:20:45,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:20:45,441 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:20:45,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:20:45,441 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:20:45,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:20:45,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:20:45,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:20:45,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:20:45,724 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:20:45,724 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:20:45,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-08-30 15:20:46,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:20:47,183 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:20:47,184 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-08-30 15:20:47,189 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160b3daac/d41ceb95180f4c289eb5f31f4c48e0b3/FLAGad0c0cb7e [2023-08-30 15:20:47,200 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/160b3daac/d41ceb95180f4c289eb5f31f4c48e0b3 [2023-08-30 15:20:47,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:20:47,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:20:47,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:20:47,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:20:47,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:20:47,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e54c060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47, skipping insertion in model container [2023-08-30 15:20:47,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:20:47,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:20:47,356 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-bad-dot-product.wvr.c[2865,2878] [2023-08-30 15:20:47,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:20:47,371 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:20:47,392 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-bad-dot-product.wvr.c[2865,2878] [2023-08-30 15:20:47,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:20:47,403 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:20:47,403 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:20:47,409 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:20:47,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47 WrapperNode [2023-08-30 15:20:47,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:20:47,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:20:47,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:20:47,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:20:47,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,447 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 338 [2023-08-30 15:20:47,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:20:47,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:20:47,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:20:47,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:20:47,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:20:47,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:20:47,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:20:47,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:20:47,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (1/1) ... [2023-08-30 15:20:47,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:20:47,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:20:47,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:20:47,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:20:47,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:20:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:20:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:20:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:20:47,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:20:47,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:20:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:20:47,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:20:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:20:47,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:20:47,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:20:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:20:47,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:20:47,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:20:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:20:47,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:20:47,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:20:47,572 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:20:47,718 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:20:47,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:20:48,119 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:20:48,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:20:48,631 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 15:20:48,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:48 BoogieIcfgContainer [2023-08-30 15:20:48,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:20:48,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:20:48,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:20:48,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:20:48,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:20:47" (1/3) ... [2023-08-30 15:20:48,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30848f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:20:48, skipping insertion in model container [2023-08-30 15:20:48,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:20:47" (2/3) ... [2023-08-30 15:20:48,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30848f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:20:48, skipping insertion in model container [2023-08-30 15:20:48,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:20:48" (3/3) ... [2023-08-30 15:20:48,642 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-08-30 15:20:48,650 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:20:48,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:20:48,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-08-30 15:20:48,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:20:48,832 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:20:48,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 287 transitions, 598 flow [2023-08-30 15:20:48,989 INFO L130 PetriNetUnfolder]: 25/284 cut-off events. [2023-08-30 15:20:48,989 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:20:48,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 25/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 572 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-08-30 15:20:48,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 287 transitions, 598 flow [2023-08-30 15:20:49,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 266 transitions, 547 flow [2023-08-30 15:20:49,012 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:20:49,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 266 transitions, 547 flow [2023-08-30 15:20:49,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 266 transitions, 547 flow [2023-08-30 15:20:49,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 266 transitions, 547 flow [2023-08-30 15:20:49,099 INFO L130 PetriNetUnfolder]: 24/266 cut-off events. [2023-08-30 15:20:49,100 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:20:49,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 266 events. 24/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 564 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-08-30 15:20:49,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 13608 [2023-08-30 15:21:06,177 INFO L134 LiptonReduction]: Checked pairs total: 23505 [2023-08-30 15:21:06,177 INFO L136 LiptonReduction]: Total number of compositions: 292 [2023-08-30 15:21:06,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:21:06,195 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;@1bc4285, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:21:06,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2023-08-30 15:21:06,197 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:21:06,198 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:21:06,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:06,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:21:06,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:21:06,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash 48717, now seen corresponding path program 1 times [2023-08-30 15:21:06,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:06,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555933952] [2023-08-30 15:21:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:06,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:06,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:06,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555933952] [2023-08-30 15:21:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555933952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:21:06,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:21:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:21:06,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310401452] [2023-08-30 15:21:06,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:21:06,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:21:06,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:06,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:21:06,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:21:06,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-08-30 15:21:06,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:06,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:06,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-08-30 15:21:06,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:10,830 INFO L130 PetriNetUnfolder]: 26827/36349 cut-off events. [2023-08-30 15:21:10,831 INFO L131 PetriNetUnfolder]: For 1216/1216 co-relation queries the response was YES. [2023-08-30 15:21:10,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73685 conditions, 36349 events. 26827/36349 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 225297 event pairs, 20520 based on Foata normal form. 0/13063 useless extension candidates. Maximal degree in co-relation 34479. Up to 18135 conditions per place. [2023-08-30 15:21:11,059 INFO L137 encePairwiseOnDemand]: 565/579 looper letters, 105 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-08-30 15:21:11,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 472 flow [2023-08-30 15:21:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:21:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:21:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-08-30 15:21:11,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47956246401842256 [2023-08-30 15:21:11,079 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-08-30 15:21:11,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-08-30 15:21:11,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:11,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-08-30 15:21:11,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:11,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:11,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:11,104 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 147 flow. Second operand 3 states and 833 transitions. [2023-08-30 15:21:11,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 472 flow [2023-08-30 15:21:11,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:21:11,153 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 162 flow [2023-08-30 15:21:11,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-08-30 15:21:11,161 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-30 15:21:11,164 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 162 flow [2023-08-30 15:21:11,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:11,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:11,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:21:11,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:21:11,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:21:11,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1512726, now seen corresponding path program 1 times [2023-08-30 15:21:11,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:11,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224788912] [2023-08-30 15:21:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:11,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:11,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:11,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224788912] [2023-08-30 15:21:11,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224788912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:21:11,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369792510] [2023-08-30 15:21:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:11,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:11,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:21:11,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:21:11,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:21:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:11,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:21:11,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:21:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:11,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:21:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369792510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:21:11,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:21:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:21:11,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434379107] [2023-08-30 15:21:11,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:21:11,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:21:11,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:21:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:21:11,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-08-30 15:21:11,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 237.14285714285714) internal successors, (1660), 7 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:11,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:11,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-08-30 15:21:11,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:19,394 INFO L130 PetriNetUnfolder]: 67072/90871 cut-off events. [2023-08-30 15:21:19,395 INFO L131 PetriNetUnfolder]: For 687/687 co-relation queries the response was YES. [2023-08-30 15:21:19,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183324 conditions, 90871 events. 67072/90871 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 5002. Compared 605744 event pairs, 51300 based on Foata normal form. 0/32735 useless extension candidates. Maximal degree in co-relation 146615. Up to 18133 conditions per place. [2023-08-30 15:21:19,842 INFO L137 encePairwiseOnDemand]: 571/579 looper letters, 250 selfloop transitions, 21 changer transitions 0/274 dead transitions. [2023-08-30 15:21:19,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 274 transitions, 1186 flow [2023-08-30 15:21:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:21:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:21:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1929 transitions. [2023-08-30 15:21:19,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759437453737972 [2023-08-30 15:21:19,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1929 transitions. [2023-08-30 15:21:19,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1929 transitions. [2023-08-30 15:21:19,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:19,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1929 transitions. [2023-08-30 15:21:19,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.57142857142856) internal successors, (1929), 7 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 579.0) internal successors, (4632), 8 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 579.0) internal successors, (4632), 8 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,864 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 162 flow. Second operand 7 states and 1929 transitions. [2023-08-30 15:21:19,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 274 transitions, 1186 flow [2023-08-30 15:21:19,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 274 transitions, 1172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:21:19,869 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 293 flow [2023-08-30 15:21:19,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2023-08-30 15:21:19,870 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 15:21:19,870 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 293 flow [2023-08-30 15:21:19,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.14285714285714) internal successors, (1660), 7 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:19,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 15:21:19,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:21:20,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:20,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:21:20,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 46895917, now seen corresponding path program 1 times [2023-08-30 15:21:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:20,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536367096] [2023-08-30 15:21:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536367096] [2023-08-30 15:21:20,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536367096] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:21:20,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305719177] [2023-08-30 15:21:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:20,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:20,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:21:20,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:21:20,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:21:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:20,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:21:20,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:21:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:20,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:21:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305719177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:21:20,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:21:20,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:21:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487146509] [2023-08-30 15:21:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:21:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:21:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:21:20,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:21:20,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-08-30 15:21:20,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:20,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:20,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-08-30 15:21:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:27,801 INFO L130 PetriNetUnfolder]: 67066/90863 cut-off events. [2023-08-30 15:21:27,802 INFO L131 PetriNetUnfolder]: For 690/690 co-relation queries the response was YES. [2023-08-30 15:21:27,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183326 conditions, 90863 events. 67066/90863 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 4993. Compared 609577 event pairs, 51300 based on Foata normal form. 2/32737 useless extension candidates. Maximal degree in co-relation 109976. Up to 54388 conditions per place. [2023-08-30 15:21:28,190 INFO L137 encePairwiseOnDemand]: 573/579 looper letters, 156 selfloop transitions, 9 changer transitions 0/168 dead transitions. [2023-08-30 15:21:28,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 168 transitions, 777 flow [2023-08-30 15:21:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:21:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:21:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1343 transitions. [2023-08-30 15:21:28,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639032815198618 [2023-08-30 15:21:28,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1343 transitions. [2023-08-30 15:21:28,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1343 transitions. [2023-08-30 15:21:28,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:28,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1343 transitions. [2023-08-30 15:21:28,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.6) internal successors, (1343), 5 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:28,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:28,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 579.0) internal successors, (3474), 6 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:28,206 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 293 flow. Second operand 5 states and 1343 transitions. [2023-08-30 15:21:28,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 168 transitions, 777 flow [2023-08-30 15:21:28,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 168 transitions, 758 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:21:28,214 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 238 flow [2023-08-30 15:21:28,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-08-30 15:21:28,217 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-30 15:21:28,217 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 238 flow [2023-08-30 15:21:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.8) internal successors, (1184), 5 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:28,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:28,218 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:21:28,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:21:28,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:21:28,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:21:28,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:28,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2117382191, now seen corresponding path program 2 times [2023-08-30 15:21:28,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:28,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348540448] [2023-08-30 15:21:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:28,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:28,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348540448] [2023-08-30 15:21:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348540448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:21:28,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088808605] [2023-08-30 15:21:28,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:21:28,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:28,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:21:28,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:21:28,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:21:28,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:21:28,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:21:28,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:21:28,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:21:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:21:28,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:21:28,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088808605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:21:28,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:21:28,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:21:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146539961] [2023-08-30 15:21:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:21:28,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:21:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:28,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:21:28,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:21:28,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 579 [2023-08-30 15:21:28,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:28,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:28,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 579 [2023-08-30 15:21:28,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:35,825 INFO L130 PetriNetUnfolder]: 67066/90862 cut-off events. [2023-08-30 15:21:35,826 INFO L131 PetriNetUnfolder]: For 744/744 co-relation queries the response was YES. [2023-08-30 15:21:35,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183319 conditions, 90862 events. 67066/90862 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 5487. Compared 616947 event pairs, 51300 based on Foata normal form. 1/32553 useless extension candidates. Maximal degree in co-relation 146601. Up to 90642 conditions per place. [2023-08-30 15:21:36,192 INFO L137 encePairwiseOnDemand]: 576/579 looper letters, 60 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-08-30 15:21:36,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 360 flow [2023-08-30 15:21:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:21:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:21:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2023-08-30 15:21:36,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44271732872769143 [2023-08-30 15:21:36,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2023-08-30 15:21:36,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2023-08-30 15:21:36,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:36,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2023-08-30 15:21:36,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:36,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:36,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:36,202 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 238 flow. Second operand 3 states and 769 transitions. [2023-08-30 15:21:36,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 360 flow [2023-08-30 15:21:36,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 347 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:21:36,204 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 227 flow [2023-08-30 15:21:36,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-08-30 15:21:36,205 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-30 15:21:36,205 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 227 flow [2023-08-30 15:21:36,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:36,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:36,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:21:36,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:21:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:36,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:21:36,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1735768183, now seen corresponding path program 1 times [2023-08-30 15:21:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:36,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361807323] [2023-08-30 15:21:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:36,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361807323] [2023-08-30 15:21:36,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361807323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:21:36,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:21:36,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:21:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558227292] [2023-08-30 15:21:36,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:21:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:21:36,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:21:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:21:36,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 579 [2023-08-30 15:21:36,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:36,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:36,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 579 [2023-08-30 15:21:36,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:48,853 INFO L130 PetriNetUnfolder]: 118421/160897 cut-off events. [2023-08-30 15:21:48,853 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-30 15:21:49,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324883 conditions, 160897 events. 118421/160897 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8316. Compared 1136141 event pairs, 74750 based on Foata normal form. 0/58897 useless extension candidates. Maximal degree in co-relation 324827. Up to 89808 conditions per place. [2023-08-30 15:21:49,711 INFO L137 encePairwiseOnDemand]: 575/579 looper letters, 110 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-30 15:21:49,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 546 flow [2023-08-30 15:21:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:21:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:21:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 15:21:49,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47322970639032813 [2023-08-30 15:21:49,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 15:21:49,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 15:21:49,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:49,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 15:21:49,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:49,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:49,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 579.0) internal successors, (2316), 4 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:49,719 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 227 flow. Second operand 3 states and 822 transitions. [2023-08-30 15:21:49,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 546 flow [2023-08-30 15:21:49,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:21:49,722 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 229 flow [2023-08-30 15:21:49,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2023-08-30 15:21:49,723 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 15:21:49,723 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 229 flow [2023-08-30 15:21:49,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:49,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:49,724 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:21:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:21:49,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:21:49,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1733481862, now seen corresponding path program 1 times [2023-08-30 15:21:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904419226] [2023-08-30 15:21:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:49,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:49,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904419226] [2023-08-30 15:21:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904419226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:21:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464425911] [2023-08-30 15:21:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:21:49,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:21:49,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:21:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:49,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:21:49,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:21:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:49,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:21:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:50,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464425911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:21:50,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:21:50,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:21:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676750614] [2023-08-30 15:21:50,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:21:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:21:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:21:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:21:50,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 579 [2023-08-30 15:21:50,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 237.15384615384616) internal successors, (3083), 13 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:50,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:50,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 579 [2023-08-30 15:21:50,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:22:17,983 INFO L130 PetriNetUnfolder]: 247501/337218 cut-off events. [2023-08-30 15:22:17,983 INFO L131 PetriNetUnfolder]: For 10365/10365 co-relation queries the response was YES. [2023-08-30 15:22:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698875 conditions, 337218 events. 247501/337218 cut-off events. For 10365/10365 co-relation queries the response was YES. Maximal size of possible extension queue 10622. Compared 2500874 event pairs, 195877 based on Foata normal form. 6/128417 useless extension candidates. Maximal degree in co-relation 571731. Up to 37092 conditions per place. [2023-08-30 15:22:19,683 INFO L137 encePairwiseOnDemand]: 574/579 looper letters, 554 selfloop transitions, 31 changer transitions 0/588 dead transitions. [2023-08-30 15:22:19,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 588 transitions, 2657 flow [2023-08-30 15:22:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:22:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:22:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3412 transitions. [2023-08-30 15:22:19,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491076568796776 [2023-08-30 15:22:19,692 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3412 transitions. [2023-08-30 15:22:19,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3412 transitions. [2023-08-30 15:22:19,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:22:19,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3412 transitions. [2023-08-30 15:22:19,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 284.3333333333333) internal successors, (3412), 12 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,710 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 579.0) internal successors, (7527), 13 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,710 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 229 flow. Second operand 12 states and 3412 transitions. [2023-08-30 15:22:19,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 588 transitions, 2657 flow [2023-08-30 15:22:19,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 588 transitions, 2645 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:22:19,718 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 443 flow [2023-08-30 15:22:19,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=579, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2023-08-30 15:22:19,719 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-08-30 15:22:19,719 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 443 flow [2023-08-30 15:22:19,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 237.15384615384616) internal successors, (3083), 13 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:19,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:22:19,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:22:19,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:22:19,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:22:19,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2023-08-30 15:22:19,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:22:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2025765732, now seen corresponding path program 1 times [2023-08-30 15:22:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:22:19,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218007310] [2023-08-30 15:22:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:22:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:22:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:22:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:22:20,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:22:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218007310] [2023-08-30 15:22:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218007310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:22:20,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:22:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:22:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167142288] [2023-08-30 15:22:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:22:20,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:22:20,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:22:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:22:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:22:20,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 579 [2023-08-30 15:22:20,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:22:20,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:22:20,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 579 [2023-08-30 15:22:20,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand