./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.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-buffer-mult-alt.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 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --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 15:15:42,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:15:42,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:15:42,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:15:42,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:15:42,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:15:42,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:15:42,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:15:42,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:15:42,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:15:42,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:15:42,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:15:42,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:15:42,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:15:42,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:15:42,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:15:42,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:15:42,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:15:42,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:15:42,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:15:42,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:15:42,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:15:42,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:15:42,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:15:42,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:15:42,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:15:42,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:15:42,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:15:42,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:15:42,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:15:42,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:15:42,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:15:42,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:15:42,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:15:42,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:15:42,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:15:42,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:15:42,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:15:42,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:15:42,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:15:42,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:15:42,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:15:42,329 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:15:42,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:15:42,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:15:42,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:15:42,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:15:42,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:15:42,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:15:42,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:15:42,333 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:15:42,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:15:42,334 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:15:42,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:15:42,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:15:42,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:15:42,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:15:42,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:15:42,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:15:42,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:15:42,335 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:15:42,336 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:15:42,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:15:42,336 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:15:42,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:15:42,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:15:42,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:15:42,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:15:42,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:15:42,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:15:42,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:15:42,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:15:42,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:15:42,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:15:42,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:15:42,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:15:42,339 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:15:42,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:15:42,339 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:15:42,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:15:42,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:15:42,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:15:42,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:15:42,676 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:15:42,677 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:15:42,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-08-30 15:15:43,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:15:44,082 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:15:44,082 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-08-30 15:15:44,088 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae45ad669/dfad4d0f4ff244888ca6fa1db84c8940/FLAGc83bee7df [2023-08-30 15:15:44,099 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae45ad669/dfad4d0f4ff244888ca6fa1db84c8940 [2023-08-30 15:15:44,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:15:44,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:15:44,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:15:44,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:15:44,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:15:44,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d8a92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44, skipping insertion in model container [2023-08-30 15:15:44,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:15:44,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:15:44,311 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-buffer-mult-alt.wvr.c[4293,4306] [2023-08-30 15:15:44,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:15:44,341 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:15:44,387 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-buffer-mult-alt.wvr.c[4293,4306] [2023-08-30 15:15:44,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:15:44,411 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:15:44,416 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:15:44,422 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:15:44,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44 WrapperNode [2023-08-30 15:15:44,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:15:44,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:15:44,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:15:44,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:15:44,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,497 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 376 [2023-08-30 15:15:44,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:15:44,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:15:44,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:15:44,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:15:44,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:15:44,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:15:44,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:15:44,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:15:44,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (1/1) ... [2023-08-30 15:15:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:15:44,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:15:44,602 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 15:15:44,636 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 15:15:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:15:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:15:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:15:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:15:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:15:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:15:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:15:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:15:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:15:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:15:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:15:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:15:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:15:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:15:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:15:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:15:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:15:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:15:44,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:15:44,666 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 15:15:44,829 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:15:44,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:15:45,366 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:15:45,745 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:15:45,746 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 15:15:45,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:15:45 BoogieIcfgContainer [2023-08-30 15:15:45,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:15:45,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:15:45,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:15:45,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:15:45,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:15:44" (1/3) ... [2023-08-30 15:15:45,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d1566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:15:45, skipping insertion in model container [2023-08-30 15:15:45,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:15:44" (2/3) ... [2023-08-30 15:15:45,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d1566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:15:45, skipping insertion in model container [2023-08-30 15:15:45,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:15:45" (3/3) ... [2023-08-30 15:15:45,756 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-08-30 15:15:45,764 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:15:45,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:15:45,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 15:15:45,773 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:15:45,971 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:15:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 271 transitions, 574 flow [2023-08-30 15:15:46,128 INFO L130 PetriNetUnfolder]: 19/267 cut-off events. [2023-08-30 15:15:46,129 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:15:46,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 267 events. 19/267 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 287 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-30 15:15:46,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 271 transitions, 574 flow [2023-08-30 15:15:46,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 247 transitions, 515 flow [2023-08-30 15:15:46,142 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:15:46,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 247 transitions, 515 flow [2023-08-30 15:15:46,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 247 transitions, 515 flow [2023-08-30 15:15:46,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 247 transitions, 515 flow [2023-08-30 15:15:46,195 INFO L130 PetriNetUnfolder]: 18/247 cut-off events. [2023-08-30 15:15:46,195 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:15:46,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 18/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-08-30 15:15:46,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-08-30 15:16:00,326 INFO L134 LiptonReduction]: Checked pairs total: 9440 [2023-08-30 15:16:00,327 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-30 15:16:00,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:16:00,343 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;@75c9d163, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:16:00,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-30 15:16:00,346 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:16:00,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:16:00,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:16:00,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:16:00,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:16:00,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:16:00,351 INFO L85 PathProgramCache]: Analyzing trace with hash 44345, now seen corresponding path program 1 times [2023-08-30 15:16:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:16:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132631558] [2023-08-30 15:16:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:16:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:16:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:16:00,677 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 15:16:00,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:16:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132631558] [2023-08-30 15:16:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132631558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:16:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:16:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:16:00,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011318254] [2023-08-30 15:16:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:16:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:16:00,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:16:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:16:00,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:16:00,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 15:16:00,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 15:16:00,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:16:00,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 15:16:00,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:16:11,480 INFO L130 PetriNetUnfolder]: 90903/113049 cut-off events. [2023-08-30 15:16:11,480 INFO L131 PetriNetUnfolder]: For 1376/1376 co-relation queries the response was YES. [2023-08-30 15:16:11,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227446 conditions, 113049 events. 90903/113049 cut-off events. For 1376/1376 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 667550 event pairs, 60600 based on Foata normal form. 0/34898 useless extension candidates. Maximal degree in co-relation 102115. Up to 55401 conditions per place. [2023-08-30 15:16:12,235 INFO L137 encePairwiseOnDemand]: 506/522 looper letters, 93 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-30 15:16:12,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-08-30 15:16:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:16:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:16:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2023-08-30 15:16:12,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789272030651341 [2023-08-30 15:16:12,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2023-08-30 15:16:12,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2023-08-30 15:16:12,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:16:12,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2023-08-30 15:16:12,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 15:16:12,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 15:16:12,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 15:16:12,277 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 750 transitions. [2023-08-30 15:16:12,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-08-30 15:16:12,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:16:12,605 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 158 flow [2023-08-30 15:16:12,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-30 15:16:12,613 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-08-30 15:16:12,614 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 158 flow [2023-08-30 15:16:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 15:16:12,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:16:12,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:16:12,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:16:12,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:16:12,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:16:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1376942, now seen corresponding path program 1 times [2023-08-30 15:16:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:16:12,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316955378] [2023-08-30 15:16:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:16:12,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:16:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:16:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:16:12,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:16:12,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316955378] [2023-08-30 15:16:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316955378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:16:12,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:16:12,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:16:12,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686162342] [2023-08-30 15:16:12,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:16:12,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:16:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:16:12,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:16:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:16:12,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 15:16:12,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 15:16:12,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:16:12,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 15:16:12,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:16:21,264 INFO L130 PetriNetUnfolder]: 90903/113047 cut-off events. [2023-08-30 15:16:21,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:16:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226015 conditions, 113047 events. 90903/113047 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 667089 event pairs, 60600 based on Foata normal form. 0/34895 useless extension candidates. Maximal degree in co-relation 112996. Up to 110793 conditions per place. [2023-08-30 15:16:22,097 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-30 15:16:22,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 254 flow [2023-08-30 15:16:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:16:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:16:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-08-30 15:16:22,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2023-08-30 15:16:22,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-08-30 15:16:22,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-08-30 15:16:22,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:16:22,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-08-30 15:16:22,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 15:16:22,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 15:16:22,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 15:16:22,116 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 158 flow. Second operand 3 states and 684 transitions. [2023-08-30 15:16:22,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 254 flow [2023-08-30 15:16:22,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:16:22,118 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 144 flow [2023-08-30 15:16:22,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-30 15:16:22,119 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-08-30 15:16:22,120 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 144 flow [2023-08-30 15:16:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 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 15:16:22,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:16:22,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:16:22,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:16:22,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:16:22,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:16:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1376954, now seen corresponding path program 1 times [2023-08-30 15:16:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:16:22,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053854840] [2023-08-30 15:16:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:16:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:16:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:16:22,200 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 15:16:22,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:16:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053854840] [2023-08-30 15:16:22,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053854840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:16:22,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205963835] [2023-08-30 15:16:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:16:22,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:16:22,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:16:22,205 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 15:16:22,225 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 15:16:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:16:22,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:16:22,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:16:22,424 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 15:16:22,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:16:22,454 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 15:16:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205963835] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:16:22,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:16:22,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:16:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606254500] [2023-08-30 15:16:22,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:16:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:16:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:16:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:16:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:16:22,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-30 15:16:22,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 15:16:22,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:16:22,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-30 15:16:22,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:16:44,073 INFO L130 PetriNetUnfolder]: 227256/282613 cut-off events. [2023-08-30 15:16:44,074 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:16:44,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565009 conditions, 282613 events. 227256/282613 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19990. Compared 1796789 event pairs, 151500 based on Foata normal form. 0/87259 useless extension candidates. Maximal degree in co-relation 565001. Up to 55399 conditions per place. [2023-08-30 15:16:45,579 INFO L137 encePairwiseOnDemand]: 516/522 looper letters, 220 selfloop transitions, 13 changer transitions 0/239 dead transitions. [2023-08-30 15:16:45,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 239 transitions, 1022 flow [2023-08-30 15:16:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:16:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:16:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1505 transitions. [2023-08-30 15:16:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48052362707535123 [2023-08-30 15:16:45,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1505 transitions. [2023-08-30 15:16:45,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1505 transitions. [2023-08-30 15:16:45,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:16:45,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1505 transitions. [2023-08-30 15:16:45,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.83333333333334) internal successors, (1505), 6 states have internal predecessors, (1505), 0 states have call successors, (0), 0 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 15:16:45,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 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 15:16:45,599 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 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 15:16:45,599 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 144 flow. Second operand 6 states and 1505 transitions. [2023-08-30 15:16:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 239 transitions, 1022 flow [2023-08-30 15:16:45,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 239 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:16:45,606 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 236 flow [2023-08-30 15:16:45,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-30 15:16:45,607 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 15:16:45,607 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 236 flow [2023-08-30 15:16:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 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 15:16:45,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:16:45,608 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:16:45,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:16:45,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:16:45,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:16:45,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:16:45,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1926962555, now seen corresponding path program 2 times [2023-08-30 15:16:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:16:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873647025] [2023-08-30 15:16:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:16:45,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:16:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:16:45,960 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 15:16:45,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:16:45,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873647025] [2023-08-30 15:16:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873647025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:16:45,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969922046] [2023-08-30 15:16:45,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:16:45,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:16:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:16:45,965 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 15:16:45,970 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 15:16:46,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:16:46,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:16:46,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:16:46,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:16:46,116 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 15:16:46,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:16:46,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969922046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:16:46,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:16:46,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:16:46,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475541137] [2023-08-30 15:16:46,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:16:46,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:16:46,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:16:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:16:46,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:16:46,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 522 [2023-08-30 15:16:46,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:16:46,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:16:46,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 522 [2023-08-30 15:16:46,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:17:07,664 INFO L130 PetriNetUnfolder]: 227256/282612 cut-off events. [2023-08-30 15:17:07,664 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:17:08,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565036 conditions, 282612 events. 227256/282612 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1798450 event pairs, 151500 based on Foata normal form. 1/87236 useless extension candidates. Maximal degree in co-relation 565024. Up to 276972 conditions per place. [2023-08-30 15:17:09,060 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-30 15:17:09,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 346 flow [2023-08-30 15:17:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:17:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:17:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-08-30 15:17:09,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393358876117497 [2023-08-30 15:17:09,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-08-30 15:17:09,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-08-30 15:17:09,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:17:09,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-08-30 15:17:09,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:17:09,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 15:17:09,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 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 15:17:09,068 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 236 flow. Second operand 3 states and 688 transitions. [2023-08-30 15:17:09,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 346 flow [2023-08-30 15:17:09,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 327 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 15:17:09,071 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 219 flow [2023-08-30 15:17:09,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-08-30 15:17:09,072 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-08-30 15:17:09,072 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 219 flow [2023-08-30 15:17:09,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:17:09,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:17:09,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:17:09,085 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 15:17:09,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:17:09,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-08-30 15:17:09,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:17:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1920836304, now seen corresponding path program 1 times [2023-08-30 15:17:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:17:09,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316076955] [2023-08-30 15:17:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:17:09,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:17:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:17:09,355 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 15:17:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:17:09,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316076955] [2023-08-30 15:17:09,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316076955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:17:09,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:17:09,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:17:09,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929802338] [2023-08-30 15:17:09,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:17:09,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:17:09,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:17:09,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:17:09,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:17:09,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 522 [2023-08-30 15:17:09,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:17:09,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:17:09,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 522 [2023-08-30 15:17:09,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand