./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.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-series.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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --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 08:17:31,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:17:31,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:17:31,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:17:31,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:17:31,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:17:31,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:17:31,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:17:31,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:17:31,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:17:31,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:17:31,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:17:31,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:17:31,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:17:31,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:17:31,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:17:31,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:17:31,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:17:31,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:17:31,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:17:31,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:17:31,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:17:31,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:17:31,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:17:31,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:17:31,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:17:31,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:17:31,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:17:31,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:17:31,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:17:31,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:17:31,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:17:31,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:17:31,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:17:31,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:17:31,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:17:31,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:17:31,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:17:31,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:17:31,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:17:31,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:17:31,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:17:31,298 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:17:31,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:17:31,299 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:17:31,299 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:17:31,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:17:31,300 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:17:31,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:17:31,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:17:31,301 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:17:31,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:17:31,302 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:17:31,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:17:31,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:17:31,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:17:31,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:17:31,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:17:31,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:17:31,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:17:31,303 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:17:31,303 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:17:31,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:17:31,303 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:17:31,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:17:31,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:17:31,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:17:31,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:17:31,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:17:31,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:17:31,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:17:31,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:17:31,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:17:31,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:17:31,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:17:31,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:17:31,306 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:17:31,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:17:31,306 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:17:31,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:17:31,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:17:31,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:17:31,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:17:31,600 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:17:31,601 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:17:31,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-09-01 08:17:32,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:17:32,839 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:17:32,840 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-09-01 08:17:32,853 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9397b233/3c7a4a92f46b42119c6f3b815160f056/FLAG93311af9a [2023-09-01 08:17:32,893 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9397b233/3c7a4a92f46b42119c6f3b815160f056 [2023-09-01 08:17:32,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:17:32,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:17:32,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:17:32,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:17:32,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:17:32,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:17:32" (1/1) ... [2023-09-01 08:17:32,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0c99e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:32, skipping insertion in model container [2023-09-01 08:17:32,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:17:32" (1/1) ... [2023-09-01 08:17:32,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:17:32,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:17:33,043 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-series.wvr.c[4351,4364] [2023-09-01 08:17:33,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:17:33,053 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:17:33,084 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-series.wvr.c[4351,4364] [2023-09-01 08:17:33,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:17:33,094 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:17:33,097 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:17:33,103 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:17:33,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33 WrapperNode [2023-09-01 08:17:33,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:17:33,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:17:33,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:17:33,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:17:33,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,170 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 406 [2023-09-01 08:17:33,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:17:33,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:17:33,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:17:33,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:17:33,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:17:33,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:17:33,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:17:33,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:17:33,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (1/1) ... [2023-09-01 08:17:33,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:17:33,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:33,295 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 08:17:33,367 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 08:17:33,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:17:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:17:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:17:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:17:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:17:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:17:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:17:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 08:17:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 08:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:17:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:17:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:17:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:17:33,403 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 08:17:33,548 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:17:33,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:17:34,038 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:17:34,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:17:34,374 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-09-01 08:17:34,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:17:34 BoogieIcfgContainer [2023-09-01 08:17:34,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:17:34,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:17:34,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:17:34,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:17:34,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:17:32" (1/3) ... [2023-09-01 08:17:34,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ec904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:17:34, skipping insertion in model container [2023-09-01 08:17:34,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:17:33" (2/3) ... [2023-09-01 08:17:34,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ec904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:17:34, skipping insertion in model container [2023-09-01 08:17:34,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:17:34" (3/3) ... [2023-09-01 08:17:34,383 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-09-01 08:17:34,389 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:17:34,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:17:34,396 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:17:34,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:17:34,514 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 08:17:34,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 289 transitions, 610 flow [2023-09-01 08:17:34,616 INFO L130 PetriNetUnfolder]: 22/285 cut-off events. [2023-09-01 08:17:34,617 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 08:17:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 285 events. 22/285 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 328 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 242. Up to 2 conditions per place. [2023-09-01 08:17:34,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 289 transitions, 610 flow [2023-09-01 08:17:34,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 265 transitions, 551 flow [2023-09-01 08:17:34,630 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:17:34,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 265 transitions, 551 flow [2023-09-01 08:17:34,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 265 transitions, 551 flow [2023-09-01 08:17:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 265 transitions, 551 flow [2023-09-01 08:17:34,680 INFO L130 PetriNetUnfolder]: 21/265 cut-off events. [2023-09-01 08:17:34,680 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:17:34,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 265 events. 21/265 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 242. Up to 2 conditions per place. [2023-09-01 08:17:34,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-09-01 08:17:47,248 INFO L134 LiptonReduction]: Checked pairs total: 9464 [2023-09-01 08:17:47,248 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-09-01 08:17:47,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:17:47,262 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;@78bcfdc4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:17:47,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-09-01 08:17:47,265 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:17:47,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:17:47,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:47,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:17:47,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:17:47,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash 49022, now seen corresponding path program 1 times [2023-09-01 08:17:47,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:47,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963099796] [2023-09-01 08:17:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:47,490 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 08:17:47,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963099796] [2023-09-01 08:17:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963099796] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:47,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:17:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:17:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367699929] [2023-09-01 08:17:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:47,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:17:47,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:17:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:17:47,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:17:47,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 08:17:47,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:47,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:17:47,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:17:55,185 INFO L130 PetriNetUnfolder]: 59431/74557 cut-off events. [2023-09-01 08:17:55,185 INFO L131 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2023-09-01 08:17:55,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150200 conditions, 74557 events. 59431/74557 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 5834. Compared 433565 event pairs, 40496 based on Foata normal form. 0/25670 useless extension candidates. Maximal degree in co-relation 66046. Up to 36533 conditions per place. [2023-09-01 08:17:55,657 INFO L137 encePairwiseOnDemand]: 541/564 looper letters, 91 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-09-01 08:17:55,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-09-01 08:17:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:17:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:17:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-09-01 08:17:55,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710401891252955 [2023-09-01 08:17:55,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-09-01 08:17:55,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-09-01 08:17:55,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:17:55,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-09-01 08:17:55,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 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 08:17:55,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:17:55,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:17:55,690 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 159 flow. Second operand 3 states and 797 transitions. [2023-09-01 08:17:55,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-09-01 08:17:55,826 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 08:17:55,829 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 180 flow [2023-09-01 08:17:55,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=124, 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=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-09-01 08:17:55,835 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-09-01 08:17:55,835 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 180 flow [2023-09-01 08:17:55,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 08:17:55,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:17:55,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:17:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:17:55,838 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:17:55,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:17:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1521801, now seen corresponding path program 1 times [2023-09-01 08:17:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:17:55,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028139773] [2023-09-01 08:17:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:17:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:55,936 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 08:17:55,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:17:55,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028139773] [2023-09-01 08:17:55,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028139773] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:17:55,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986886883] [2023-09-01 08:17:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:17:55,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:17:55,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:17:55,961 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 08:17:55,964 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 08:17:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:17:56,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:17:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:17:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:17:56,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:17:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986886883] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:17:56,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:17:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:17:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492420259] [2023-09-01 08:17:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:17:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:17:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:17:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:17:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:17:56,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:17:56,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 0 states have call successors, (0), 0 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 08:17:56,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:17:56,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:17:56,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:03,547 INFO L130 PetriNetUnfolder]: 59431/74554 cut-off events. [2023-09-01 08:18:03,552 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:18:03,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149074 conditions, 74554 events. 59431/74554 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6339. Compared 435757 event pairs, 40496 based on Foata normal form. 0/25676 useless extension candidates. Maximal degree in co-relation 74517. Up to 36529 conditions per place. [2023-09-01 08:18:04,000 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 88 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2023-09-01 08:18:04,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 444 flow [2023-09-01 08:18:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:18:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:18:04,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 993 transitions. [2023-09-01 08:18:04,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401595744680851 [2023-09-01 08:18:04,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 993 transitions. [2023-09-01 08:18:04,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 993 transitions. [2023-09-01 08:18:04,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:04,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 993 transitions. [2023-09-01 08:18:04,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 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 08:18:04,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 564.0) internal successors, (2820), 5 states have internal predecessors, (2820), 0 states have call successors, (0), 0 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 08:18:04,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 564.0) internal successors, (2820), 5 states have internal predecessors, (2820), 0 states have call successors, (0), 0 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 08:18:04,027 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 180 flow. Second operand 4 states and 993 transitions. [2023-09-01 08:18:04,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 444 flow [2023-09-01 08:18:04,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:18:04,031 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 168 flow [2023-09-01 08:18:04,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-09-01 08:18:04,032 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-09-01 08:18:04,032 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 168 flow [2023-09-01 08:18:04,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 0 states have call successors, (0), 0 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 08:18:04,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:04,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:18:04,041 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 08:18:04,241 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 08:18:04,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:04,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1521802, now seen corresponding path program 1 times [2023-09-01 08:18:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:04,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116440182] [2023-09-01 08:18:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:04,308 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 08:18:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:04,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116440182] [2023-09-01 08:18:04,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116440182] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:04,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613833579] [2023-09-01 08:18:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:04,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:04,314 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 08:18:04,316 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 08:18:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:04,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:18:04,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:04,450 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 08:18:04,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:04,465 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 08:18:04,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613833579] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:04,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:04,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:18:04,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507505326] [2023-09-01 08:18:04,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:04,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:18:04,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:04,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:18:04,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:18:04,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:18:04,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 08:18:04,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:04,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:18:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:21,590 INFO L130 PetriNetUnfolder]: 148576/186379 cut-off events. [2023-09-01 08:18:21,590 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:18:21,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372658 conditions, 186379 events. 148576/186379 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11072. Compared 1162916 event pairs, 101240 based on Foata normal form. 0/64703 useless extension candidates. Maximal degree in co-relation 298059. Up to 36531 conditions per place. [2023-09-01 08:18:22,577 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 208 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2023-09-01 08:18:22,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 235 transitions, 1050 flow [2023-09-01 08:18:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:18:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:18:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2023-09-01 08:18:22,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46749408983451535 [2023-09-01 08:18:22,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2023-09-01 08:18:22,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2023-09-01 08:18:22,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:22,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2023-09-01 08:18:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 0 states have call successors, (0), 0 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 08:18:22,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 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 08:18:22,597 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 564.0) internal successors, (3948), 7 states have internal predecessors, (3948), 0 states have call successors, (0), 0 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 08:18:22,598 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 168 flow. Second operand 6 states and 1582 transitions. [2023-09-01 08:18:22,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 235 transitions, 1050 flow [2023-09-01 08:18:22,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 235 transitions, 1037 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:18:22,608 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 317 flow [2023-09-01 08:18:22,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=65, PETRI_TRANSITIONS=75} [2023-09-01 08:18:22,609 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-09-01 08:18:22,609 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 317 flow [2023-09-01 08:18:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 08:18:22,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:22,611 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:18:22,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:18:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 08:18:22,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:22,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1906562497, now seen corresponding path program 2 times [2023-09-01 08:18:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:22,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100755738] [2023-09-01 08:18:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:22,933 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 08:18:22,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:22,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100755738] [2023-09-01 08:18:22,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100755738] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:22,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364686783] [2023-09-01 08:18:22,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:18:22,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:22,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:22,953 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 08:18:22,955 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 08:18:23,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:18:23,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:18:23,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:18:23,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:23,087 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 08:18:23,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:18:23,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364686783] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:18:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:18:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:18:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304308061] [2023-09-01 08:18:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:18:23,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:18:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:18:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:18:23,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 564 [2023-09-01 08:18:23,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 75 transitions, 317 flow. Second operand has 3 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) [2023-09-01 08:18:23,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:23,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 564 [2023-09-01 08:18:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:18:40,752 INFO L130 PetriNetUnfolder]: 148576/186378 cut-off events. [2023-09-01 08:18:40,753 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 08:18:41,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372694 conditions, 186378 events. 148576/186378 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13132. Compared 1176208 event pairs, 101240 based on Foata normal form. 1/63334 useless extension candidates. Maximal degree in co-relation 298069. Up to 182623 conditions per place. [2023-09-01 08:18:41,807 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 62 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-09-01 08:18:41,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 443 flow [2023-09-01 08:18:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:18:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:18:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2023-09-01 08:18:41,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314420803782506 [2023-09-01 08:18:41,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2023-09-01 08:18:41,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2023-09-01 08:18:41,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:18:41,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2023-09-01 08:18:41,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 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 08:18:41,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:41,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 564.0) internal successors, (2256), 4 states have internal predecessors, (2256), 0 states have call successors, (0), 0 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 08:18:41,818 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 317 flow. Second operand 3 states and 730 transitions. [2023-09-01 08:18:41,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 443 flow [2023-09-01 08:18:41,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 413 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:18:41,821 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 289 flow [2023-09-01 08:18:41,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2023-09-01 08:18:41,822 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-09-01 08:18:41,822 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 289 flow [2023-09-01 08:18:41,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-09-01 08:18:41,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:18:41,823 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 08:18:41,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 08:18:42,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:42,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:18:42,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:18:42,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1383971233, now seen corresponding path program 1 times [2023-09-01 08:18:42,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:18:42,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213869911] [2023-09-01 08:18:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:18:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:42,122 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 08:18:42,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:18:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213869911] [2023-09-01 08:18:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213869911] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:18:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726438158] [2023-09-01 08:18:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:18:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:18:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:18:42,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:18:42,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:18:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:18:42,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:18:42,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:18:42,258 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 08:18:42,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:18:42,308 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 08:18:42,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726438158] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:18:42,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:18:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 08:18:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614209581] [2023-09-01 08:18:42,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:18:42,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 08:18:42,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:18:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 08:18:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 08:18:42,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-09-01 08:18:42,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 289 flow. Second operand has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 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 08:18:42,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:18:42,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-09-01 08:18:42,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:19:24,526 INFO L130 PetriNetUnfolder]: 326866/410028 cut-off events. [2023-09-01 08:19:24,526 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-09-01 08:19:25,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819863 conditions, 410028 events. 326866/410028 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 15769. Compared 2665566 event pairs, 222728 based on Foata normal form. 12/142771 useless extension candidates. Maximal degree in co-relation 819759. Up to 36543 conditions per place. [2023-09-01 08:19:26,890 INFO L137 encePairwiseOnDemand]: 556/564 looper letters, 447 selfloop transitions, 51 changer transitions 0/504 dead transitions. [2023-09-01 08:19:26,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 504 transitions, 2357 flow [2023-09-01 08:19:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:19:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:19:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3198 transitions. [2023-09-01 08:19:26,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725177304964539 [2023-09-01 08:19:26,898 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3198 transitions. [2023-09-01 08:19:26,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3198 transitions. [2023-09-01 08:19:26,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:19:26,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3198 transitions. [2023-09-01 08:19:26,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 266.5) internal successors, (3198), 12 states have internal predecessors, (3198), 0 states have call successors, (0), 0 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 08:19:26,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 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 08:19:26,911 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 564.0) internal successors, (7332), 13 states have internal predecessors, (7332), 0 states have call successors, (0), 0 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 08:19:26,911 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 289 flow. Second operand 12 states and 3198 transitions. [2023-09-01 08:19:26,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 504 transitions, 2357 flow [2023-09-01 08:19:26,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 504 transitions, 2333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:19:26,917 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 637 flow [2023-09-01 08:19:26,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=637, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2023-09-01 08:19:26,918 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-09-01 08:19:26,918 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 637 flow [2023-09-01 08:19:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 225.15384615384616) internal successors, (2927), 13 states have internal predecessors, (2927), 0 states have call successors, (0), 0 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 08:19:26,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:19:26,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:19:26,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:19:27,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:19:27,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-09-01 08:19:27,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:19:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1407402982, now seen corresponding path program 1 times [2023-09-01 08:19:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:19:27,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110904582] [2023-09-01 08:19:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:19:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:19:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:19:27,189 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 08:19:27,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:19:27,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110904582] [2023-09-01 08:19:27,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110904582] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:19:27,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:19:27,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:19:27,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783638744] [2023-09-01 08:19:27,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:19:27,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:19:27,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:19:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:19:27,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:19:27,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 564 [2023-09-01 08:19:27,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 637 flow. Second operand has 3 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 08:19:27,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:19:27,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 564 [2023-09-01 08:19:27,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand