./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.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 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:16:51,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:16:51,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:16:51,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:16:51,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:16:51,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:16:51,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:16:51,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:16:51,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:16:51,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:16:51,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:16:51,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:16:51,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:16:51,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:16:51,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:16:51,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:16:51,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:16:51,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:16:51,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:16:51,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:16:51,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:16:51,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:16:51,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:16:51,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:16:51,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:16:51,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:16:51,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:16:51,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:16:51,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:16:51,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:16:51,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:16:51,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:16:51,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:16:51,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:16:51,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:16:51,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:16:51,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:16:51,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:16:51,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:16:51,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:16:51,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:16:51,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:16:51,403 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:16:51,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:16:51,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:16:51,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:16:51,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:16:51,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:16:51,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:16:51,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:16:51,408 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:16:51,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:16:51,409 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:16:51,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:16:51,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:16:51,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:16:51,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:16:51,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:16:51,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:16:51,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:16:51,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:16:51,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:16:51,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:16:51,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:16:51,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:16:51,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:16:51,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:16:51,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:16:51,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:16:51,412 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:16:51,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:16:51,413 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:16:51,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422a1b4addf42b15afc18c6b3ff87ab94cf45a5af46627fa0165a3dbe9c138e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:16:51,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:16:51,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:16:51,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:16:51,653 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:16:51,653 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:16:51,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-09-01 08:16:52,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:16:52,723 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:16:52,723 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2023-09-01 08:16:52,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e66c3514/50049b0f3786431daa55c497f3bf1876/FLAG166997019 [2023-09-01 08:16:52,738 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e66c3514/50049b0f3786431daa55c497f3bf1876 [2023-09-01 08:16:52,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:16:52,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:16:52,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:16:52,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:16:52,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:16:52,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:52,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c3dbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52, skipping insertion in model container [2023-09-01 08:16:52,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:52,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:16:52,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:16:52,882 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-09-01 08:16:52,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:16:52,894 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:16:52,915 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4218,4231] [2023-09-01 08:16:52,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:16:52,926 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:16:52,926 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:16:52,932 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:16:52,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52 WrapperNode [2023-09-01 08:16:52,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:16:52,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:16:52,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:16:52,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:16:52,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:52,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:52,992 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 361 [2023-09-01 08:16:53,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:16:53,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:16:53,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:16:53,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:16:53,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:16:53,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:16:53,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:16:53,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:16:53,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (1/1) ... [2023-09-01 08:16:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:16:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:16:53,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:16:53,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:16:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:16:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:16:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:16:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:16:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:16:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:16:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:16:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:16:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:16:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:16:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:16:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:16:53,170 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:16:53,378 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:16:53,380 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:16:53,789 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:16:54,167 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:16:54,167 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:16:54,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:16:54 BoogieIcfgContainer [2023-09-01 08:16:54,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:16:54,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:16:54,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:16:54,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:16:54,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:16:52" (1/3) ... [2023-09-01 08:16:54,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c074e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:16:54, skipping insertion in model container [2023-09-01 08:16:54,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:16:52" (2/3) ... [2023-09-01 08:16:54,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c074e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:16:54, skipping insertion in model container [2023-09-01 08:16:54,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:16:54" (3/3) ... [2023-09-01 08:16:54,177 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-09-01 08:16:54,183 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:16:54,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:16:54,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 08:16:54,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:16:54,393 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:16:54,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 254 transitions, 540 flow [2023-09-01 08:16:54,546 INFO L130 PetriNetUnfolder]: 18/250 cut-off events. [2023-09-01 08:16:54,546 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:16:54,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 250 events. 18/250 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 293 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-09-01 08:16:54,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 254 transitions, 540 flow [2023-09-01 08:16:54,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 230 transitions, 481 flow [2023-09-01 08:16:54,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:16:54,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 230 transitions, 481 flow [2023-09-01 08:16:54,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 230 transitions, 481 flow [2023-09-01 08:16:54,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 230 transitions, 481 flow [2023-09-01 08:16:54,596 INFO L130 PetriNetUnfolder]: 17/230 cut-off events. [2023-09-01 08:16:54,596 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:16:54,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 230 events. 17/230 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 290 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 207. Up to 2 conditions per place. [2023-09-01 08:16:54,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-09-01 08:17:09,825 INFO L134 LiptonReduction]: Checked pairs total: 9412 [2023-09-01 08:17:09,825 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-09-01 08:17:09,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:17:09,840 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;@4c3877d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:17:09,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-09-01 08:17:09,843 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:17:09,844 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:17:09,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:09,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:17:09,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:17:09,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 42807, now seen corresponding path program 1 times [2023-09-01 08:17:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869669979] [2023-09-01 08:17:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:10,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:10,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869669979] [2023-09-01 08:17:10,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869669979] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:10,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:17:10,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:17:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242456761] [2023-09-01 08:17:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:10,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:17:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:17:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:17:10,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-09-01 08:17:10,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:10,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:10,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-09-01 08:17:10,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:20,518 INFO L130 PetriNetUnfolder]: 90903/113049 cut-off events. [2023-09-01 08:17:20,518 INFO L131 PetriNetUnfolder]: For 1312/1312 co-relation queries the response was YES. [2023-09-01 08:17:20,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227446 conditions, 113049 events. 90903/113049 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 669310 event pairs, 60600 based on Foata normal form. 0/34841 useless extension candidates. Maximal degree in co-relation 102115. Up to 55401 conditions per place. [2023-09-01 08:17:21,187 INFO L137 encePairwiseOnDemand]: 469/485 looper letters, 93 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-09-01 08:17:21,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-09-01 08:17:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:17:21,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:17:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-09-01 08:17:21,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824742268041237 [2023-09-01 08:17:21,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-09-01 08:17:21,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-09-01 08:17:21,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:21,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-09-01 08:17:21,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:21,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:21,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:21,221 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 702 transitions. [2023-09-01 08:17:21,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-09-01 08:17:21,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 08:17:21,989 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 158 flow [2023-09-01 08:17:21,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, 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} [2023-09-01 08:17:21,995 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-09-01 08:17:21,995 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 158 flow [2023-09-01 08:17:21,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:21,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:21,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:17:21,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:17:21,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:17:22,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:22,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1329307, now seen corresponding path program 1 times [2023-09-01 08:17:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421696247] [2023-09-01 08:17:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:22,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:22,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421696247] [2023-09-01 08:17:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421696247] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:17:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863979069] [2023-09-01 08:17:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:22,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:22,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:22,119 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:17:22,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:17:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:22,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:17:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:17:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:22,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:17:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863979069] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:17:22,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:17:22,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:17:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279679575] [2023-09-01 08:17:22,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:17:22,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:17:22,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:17:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:17:22,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-09-01 08:17:22,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:22,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:22,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-09-01 08:17:22,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:46,507 INFO L130 PetriNetUnfolder]: 227262/282621 cut-off events. [2023-09-01 08:17:46,508 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:17:46,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565039 conditions, 282621 events. 227262/282621 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18180. Compared 1789149 event pairs, 151500 based on Foata normal form. 0/87207 useless extension candidates. Maximal degree in co-relation 451987. Up to 55399 conditions per place. [2023-09-01 08:17:48,111 INFO L137 encePairwiseOnDemand]: 477/485 looper letters, 220 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2023-09-01 08:17:48,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 247 transitions, 1082 flow [2023-09-01 08:17:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:17:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:17:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1612 transitions. [2023-09-01 08:17:48,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748159057437408 [2023-09-01 08:17:48,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1612 transitions. [2023-09-01 08:17:48,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1612 transitions. [2023-09-01 08:17:48,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:48,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1612 transitions. [2023-09-01 08:17:48,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.28571428571428) internal successors, (1612), 7 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:48,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 485.0) internal successors, (3880), 8 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:48,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 485.0) internal successors, (3880), 8 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:48,125 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 158 flow. Second operand 7 states and 1612 transitions. [2023-09-01 08:17:48,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 247 transitions, 1082 flow [2023-09-01 08:17:48,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 247 transitions, 1068 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:17:48,132 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 289 flow [2023-09-01 08:17:48,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2023-09-01 08:17:48,133 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-09-01 08:17:48,133 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 289 flow [2023-09-01 08:17:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:48,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:48,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 08:17:48,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:17:48,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:48,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:17:48,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash 41210808, now seen corresponding path program 1 times [2023-09-01 08:17:48,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:48,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181826137] [2023-09-01 08:17:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:17:48,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:48,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181826137] [2023-09-01 08:17:48,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181826137] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:48,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:17:48,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:17:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105939200] [2023-09-01 08:17:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:17:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:17:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:17:48,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 485 [2023-09-01 08:17:48,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:17:48,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:48,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 485 [2023-09-01 08:17:48,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:12,301 INFO L130 PetriNetUnfolder]: 227256/282613 cut-off events. [2023-09-01 08:18:12,301 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:18:12,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565041 conditions, 282613 events. 227256/282613 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1799961 event pairs, 151500 based on Foata normal form. 2/86953 useless extension candidates. Maximal degree in co-relation 339005. Up to 276978 conditions per place. [2023-09-01 08:18:14,080 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 60 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-09-01 08:18:14,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 357 flow [2023-09-01 08:18:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-09-01 08:18:14,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43711340206185567 [2023-09-01 08:18:14,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-09-01 08:18:14,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-09-01 08:18:14,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:14,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-09-01 08:18:14,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-09-01 08:18:14,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,088 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 289 flow. Second operand 3 states and 636 transitions. [2023-09-01 08:18:14,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 357 flow [2023-09-01 08:18:14,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 338 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:14,092 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 218 flow [2023-09-01 08:18:14,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-09-01 08:18:14,094 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-09-01 08:18:14,094 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 218 flow [2023-09-01 08:18:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:14,094 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:18:14,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 08:18:14,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:18:14,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash 948953143, now seen corresponding path program 2 times [2023-09-01 08:18:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885429674] [2023-09-01 08:18:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885429674] [2023-09-01 08:18:14,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885429674] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:14,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306208542] [2023-09-01 08:18:14,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:18:14,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:14,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:14,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:18:14,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:18:14,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:18:14,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:18:14,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:18:14,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:18:14,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:14,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306208542] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:14,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:14,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:18:14,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636638663] [2023-09-01 08:18:14,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:14,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:14,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:14,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:14,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:18:14,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 485 [2023-09-01 08:18:14,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:14,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:14,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 485 [2023-09-01 08:18:14,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:38,171 INFO L130 PetriNetUnfolder]: 227256/282612 cut-off events. [2023-09-01 08:18:38,171 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 08:18:38,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565026 conditions, 282612 events. 227256/282612 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1799997 event pairs, 151500 based on Foata normal form. 1/86952 useless extension candidates. Maximal degree in co-relation 565014. Up to 276972 conditions per place. [2023-09-01 08:18:39,758 INFO L137 encePairwiseOnDemand]: 482/485 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-09-01 08:18:39,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 328 flow [2023-09-01 08:18:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-09-01 08:18:39,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43986254295532645 [2023-09-01 08:18:39,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-09-01 08:18:39,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-09-01 08:18:39,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:39,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-09-01 08:18:39,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:39,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:39,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 485.0) internal successors, (1940), 4 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:39,771 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 218 flow. Second operand 3 states and 640 transitions. [2023-09-01 08:18:39,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 328 flow [2023-09-01 08:18:39,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:39,774 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 219 flow [2023-09-01 08:18:39,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, 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} [2023-09-01 08:18:39,775 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-09-01 08:18:39,776 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 219 flow [2023-09-01 08:18:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:18:39,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:39,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:18:39,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:18:39,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 08:18:39,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:18:39,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 951523232, now seen corresponding path program 1 times [2023-09-01 08:18:39,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:39,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325826893] [2023-09-01 08:18:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:39,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:18:40,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:40,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325826893] [2023-09-01 08:18:40,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325826893] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:18:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:18:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039986710] [2023-09-01 08:18:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:40,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:18:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:18:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:18:40,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 485 [2023-09-01 08:18:40,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 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) [2023-09-01 08:18:40,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:40,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 485 [2023-09-01 08:18:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:05,515 INFO L130 PetriNetUnfolder]: 242156/302908 cut-off events. [2023-09-01 08:19:05,516 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 08:19:06,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605648 conditions, 302908 events. 242156/302908 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21204. Compared 1973795 event pairs, 162500 based on Foata normal form. 0/97638 useless extension candidates. Maximal degree in co-relation 605635. Up to 276976 conditions per place. [2023-09-01 08:19:07,564 INFO L137 encePairwiseOnDemand]: 472/485 looper letters, 95 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-09-01 08:19:07,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 526 flow [2023-09-01 08:19:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:19:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:19:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 858 transitions. [2023-09-01 08:19:07,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422680412371134 [2023-09-01 08:19:07,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 858 transitions. [2023-09-01 08:19:07,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 858 transitions. [2023-09-01 08:19:07,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:07,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 858 transitions. [2023-09-01 08:19:07,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.5) internal successors, (858), 4 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:07,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 485.0) internal successors, (2425), 5 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:07,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 485.0) internal successors, (2425), 5 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:07,572 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 219 flow. Second operand 4 states and 858 transitions. [2023-09-01 08:19:07,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 526 flow [2023-09-01 08:19:07,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 514 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:19:07,574 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 234 flow [2023-09-01 08:19:07,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=485, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-09-01 08:19:07,575 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-09-01 08:19:07,575 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 234 flow [2023-09-01 08:19:07,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.25) internal successors, (769), 4 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) [2023-09-01 08:19:07,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:07,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:19:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:19:07,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 08:19:07,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash -644651260, now seen corresponding path program 1 times [2023-09-01 08:19:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328252413] [2023-09-01 08:19:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:19:07,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:07,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328252413] [2023-09-01 08:19:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328252413] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:19:07,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646736262] [2023-09-01 08:19:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:07,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:07,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:19:07,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:19:07,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:19:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:07,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:19:07,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:19:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:19:07,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:19:07,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646736262] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:07,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:19:07,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-09-01 08:19:07,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680318753] [2023-09-01 08:19:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:07,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:19:07,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:19:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:19:07,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 485 [2023-09-01 08:19:07,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:19:07,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:07,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 485 [2023-09-01 08:19:07,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand