./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 TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:37:32,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:37:32,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:37:33,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:37:33,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:37:33,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:37:33,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:37:33,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:37:33,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:37:33,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:37:33,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:37:33,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:37:33,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:37:33,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:37:33,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:37:33,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:37:33,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:37:33,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:37:33,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:37:33,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:37:33,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:37:33,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:37:33,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:37:33,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:37:33,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:37:33,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:37:33,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:37:33,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:37:33,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:37:33,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:37:33,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:37:33,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:37:33,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:37:33,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:37:33,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:37:33,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:37:33,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:37:33,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:37:33,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:37:33,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:37:33,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:37:33,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:37:33,104 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:37:33,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:37:33,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:37:33,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:37:33,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:37:33,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:37:33,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:37:33,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:37:33,108 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:37:33,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:37:33,109 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:37:33,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:37:33,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:37:33,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:37:33,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:37:33,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:37:33,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:37:33,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:37:33,110 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:37:33,111 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:37:33,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:37:33,111 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:37:33,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:37:33,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:37:33,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:37:33,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:37:33,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:37:33,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:37:33,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:37:33,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:37:33,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:37:33,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:37:33,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:37:33,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:37:33,114 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:37:33,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:37:33,114 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:37:33,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:37:33,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:37:33,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:37:33,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:37:33,458 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:37:33,458 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:37:33,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-08-30 15:37:34,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:37:34,791 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:37:34,791 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-08-30 15:37:34,798 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b50056d3/8774d65c2f4949e7aafc244db7ff3fca/FLAG13e07f5ee [2023-08-30 15:37:34,812 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b50056d3/8774d65c2f4949e7aafc244db7ff3fca [2023-08-30 15:37:34,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:37:34,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:37:34,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:37:34,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:37:34,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:37:34,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:37:34" (1/1) ... [2023-08-30 15:37:34,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c410045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:34, skipping insertion in model container [2023-08-30 15:37:34,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:37:34" (1/1) ... [2023-08-30 15:37:34,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:37:34,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:37:35,002 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] [2023-08-30 15:37:35,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:37:35,016 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:37:35,046 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] [2023-08-30 15:37:35,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:37:35,067 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:37:35,067 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:37:35,073 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:37:35,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35 WrapperNode [2023-08-30 15:37:35,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:37:35,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:37:35,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:37:35,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:37:35,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,134 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 406 [2023-08-30 15:37:35,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:37:35,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:37:35,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:37:35,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:37:35,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:37:35,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:37:35,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:37:35,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:37:35,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (1/1) ... [2023-08-30 15:37:35,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:37:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:35,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:37:35,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:37:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:37:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:37:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:37:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:37:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:37:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:37:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:37:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:37:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:37:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:37:35,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:37:35,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:37:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:37:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:37:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:37:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:37:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:37:35,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:37:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:37:35,287 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:37:35,427 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:37:35,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:37:35,921 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:37:36,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:37:36,387 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 15:37:36,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:37:36 BoogieIcfgContainer [2023-08-30 15:37:36,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:37:36,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:37:36,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:37:36,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:37:36,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:37:34" (1/3) ... [2023-08-30 15:37:36,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fb5130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:37:36, skipping insertion in model container [2023-08-30 15:37:36,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:37:35" (2/3) ... [2023-08-30 15:37:36,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fb5130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:37:36, skipping insertion in model container [2023-08-30 15:37:36,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:37:36" (3/3) ... [2023-08-30 15:37:36,403 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-08-30 15:37:36,411 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:37:36,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:37:36,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:37:36,420 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:37:36,593 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:37:36,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 289 transitions, 610 flow [2023-08-30 15:37:36,785 INFO L130 PetriNetUnfolder]: 22/285 cut-off events. [2023-08-30 15:37:36,785 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:37:36,793 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. [2023-08-30 15:37:36,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 289 transitions, 610 flow [2023-08-30 15:37:36,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 265 transitions, 551 flow [2023-08-30 15:37:36,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:37:36,817 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 265 transitions, 551 flow [2023-08-30 15:37:36,819 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 265 transitions, 551 flow [2023-08-30 15:37:36,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 265 transitions, 551 flow [2023-08-30 15:37:36,874 INFO L130 PetriNetUnfolder]: 21/265 cut-off events. [2023-08-30 15:37:36,874 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:37:36,875 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. [2023-08-30 15:37:36,878 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-08-30 15:37:51,884 INFO L134 LiptonReduction]: Checked pairs total: 9464 [2023-08-30 15:37:51,885 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-08-30 15:37:51,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:37:51,902 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;@1541202c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:37:51,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-08-30 15:37:51,906 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:37:51,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:37:51,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:51,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:37:51,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:37:51,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 49022, now seen corresponding path program 1 times [2023-08-30 15:37:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161495473] [2023-08-30 15:37:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:51,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:37:52,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:52,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161495473] [2023-08-30 15:37:52,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161495473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:52,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:37:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:37:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703897210] [2023-08-30 15:37:52,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:52,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:52,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:37:52,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:37:52,374 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) [2023-08-30 15:37:52,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:52,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:37:52,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:00,506 INFO L130 PetriNetUnfolder]: 59431/74557 cut-off events. [2023-08-30 15:38:00,507 INFO L131 PetriNetUnfolder]: For 1060/1060 co-relation queries the response was YES. [2023-08-30 15:38:00,657 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. [2023-08-30 15:38:01,043 INFO L137 encePairwiseOnDemand]: 541/564 looper letters, 91 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-08-30 15:38:01,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-08-30 15:38:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-30 15:38:01,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710401891252955 [2023-08-30 15:38:01,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-30 15:38:01,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-30 15:38:01,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:01,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-30 15:38:01,081 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) [2023-08-30 15:38:01,088 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) [2023-08-30 15:38:01,089 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) [2023-08-30 15:38:01,091 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 159 flow. Second operand 3 states and 797 transitions. [2023-08-30 15:38:01,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-08-30 15:38:01,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:38:01,250 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 180 flow [2023-08-30 15:38:01,251 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} [2023-08-30 15:38:01,254 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 15:38:01,254 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 180 flow [2023-08-30 15:38:01,255 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) [2023-08-30 15:38:01,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:01,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:38:01,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:38:01,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:38:01,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1521801, now seen corresponding path program 1 times [2023-08-30 15:38:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645942605] [2023-08-30 15:38:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:01,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645942605] [2023-08-30 15:38:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645942605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688673476] [2023-08-30 15:38:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:01,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:01,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:01,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:38:01,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:38:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:01,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:38:01,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:01,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:38:01,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688673476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:01,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:38:01,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:38:01,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900949991] [2023-08-30 15:38:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:38:01,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:38:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:38:01,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:38:01,620 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) [2023-08-30 15:38:01,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:01,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:38:01,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:08,510 INFO L130 PetriNetUnfolder]: 59431/74554 cut-off events. [2023-08-30 15:38:08,510 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:38:08,634 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. [2023-08-30 15:38:08,984 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 88 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2023-08-30 15:38:08,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 444 flow [2023-08-30 15:38:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:38:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:38:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 993 transitions. [2023-08-30 15:38:08,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4401595744680851 [2023-08-30 15:38:08,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 993 transitions. [2023-08-30 15:38:08,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 993 transitions. [2023-08-30 15:38:08,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:08,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 993 transitions. [2023-08-30 15:38:08,992 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) [2023-08-30 15:38:08,995 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) [2023-08-30 15:38:08,997 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) [2023-08-30 15:38:08,997 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 180 flow. Second operand 4 states and 993 transitions. [2023-08-30 15:38:08,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 444 flow [2023-08-30 15:38:08,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 432 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:38:09,000 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 168 flow [2023-08-30 15:38:09,001 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} [2023-08-30 15:38:09,001 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-08-30 15:38:09,002 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 168 flow [2023-08-30 15:38:09,002 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) [2023-08-30 15:38:09,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:09,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:38:09,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:38:09,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:09,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:38:09,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1521802, now seen corresponding path program 1 times [2023-08-30 15:38:09,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:09,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904312164] [2023-08-30 15:38:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:09,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:09,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:09,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904312164] [2023-08-30 15:38:09,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904312164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:09,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417419911] [2023-08-30 15:38:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:09,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:09,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:09,295 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:38:09,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:38:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:09,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:38:09,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:09,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:38:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417419911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:38:09,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:38:09,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:38:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145061284] [2023-08-30 15:38:09,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:38:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:38:09,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:38:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:38:09,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:38:09,509 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) [2023-08-30 15:38:09,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:09,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:38:09,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:25,654 INFO L130 PetriNetUnfolder]: 148576/186379 cut-off events. [2023-08-30 15:38:25,654 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:38:25,956 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. [2023-08-30 15:38:26,612 INFO L137 encePairwiseOnDemand]: 555/564 looper letters, 208 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2023-08-30 15:38:26,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 235 transitions, 1050 flow [2023-08-30 15:38:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:38:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:38:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2023-08-30 15:38:26,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46749408983451535 [2023-08-30 15:38:26,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2023-08-30 15:38:26,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2023-08-30 15:38:26,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:26,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2023-08-30 15:38:26,625 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) [2023-08-30 15:38:26,631 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) [2023-08-30 15:38:26,632 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) [2023-08-30 15:38:26,633 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 168 flow. Second operand 6 states and 1582 transitions. [2023-08-30 15:38:26,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 235 transitions, 1050 flow [2023-08-30 15:38:26,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 235 transitions, 1037 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:38:26,643 INFO L231 Difference]: Finished difference. Result has 65 places, 75 transitions, 317 flow [2023-08-30 15:38:26,643 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} [2023-08-30 15:38:26,645 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-08-30 15:38:26,645 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 75 transitions, 317 flow [2023-08-30 15:38:26,646 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) [2023-08-30 15:38:26,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:26,646 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:38:26,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:38:26,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:38:26,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:38:26,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1906562497, now seen corresponding path program 2 times [2023-08-30 15:38:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:26,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429328228] [2023-08-30 15:38:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:26,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429328228] [2023-08-30 15:38:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429328228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511661372] [2023-08-30 15:38:26,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:38:26,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:26,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:26,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:38:26,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:38:27,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:38:27,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:38:27,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:38:27,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:38:27,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:38:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511661372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:27,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:38:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:38:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822623621] [2023-08-30 15:38:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:27,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:38:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:38:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:38:27,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 564 [2023-08-30 15:38:27,146 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) [2023-08-30 15:38:27,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:27,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 564 [2023-08-30 15:38:27,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:43,602 INFO L130 PetriNetUnfolder]: 148576/186378 cut-off events. [2023-08-30 15:38:43,602 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 15:38:43,985 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. [2023-08-30 15:38:44,555 INFO L137 encePairwiseOnDemand]: 561/564 looper letters, 62 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2023-08-30 15:38:44,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 443 flow [2023-08-30 15:38:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 730 transitions. [2023-08-30 15:38:44,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314420803782506 [2023-08-30 15:38:44,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 730 transitions. [2023-08-30 15:38:44,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 730 transitions. [2023-08-30 15:38:44,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:44,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 730 transitions. [2023-08-30 15:38:44,560 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) [2023-08-30 15:38:44,563 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) [2023-08-30 15:38:44,564 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) [2023-08-30 15:38:44,564 INFO L175 Difference]: Start difference. First operand has 65 places, 75 transitions, 317 flow. Second operand 3 states and 730 transitions. [2023-08-30 15:38:44,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 74 transitions, 443 flow [2023-08-30 15:38:44,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 413 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 15:38:44,567 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 289 flow [2023-08-30 15:38:44,567 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} [2023-08-30 15:38:44,568 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-08-30 15:38:44,568 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 289 flow [2023-08-30 15:38:44,568 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) [2023-08-30 15:38:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:44,569 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:38:44,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:38:44,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:44,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:38:44,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1383971233, now seen corresponding path program 1 times [2023-08-30 15:38:44,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:44,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456846913] [2023-08-30 15:38:44,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:44,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456846913] [2023-08-30 15:38:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456846913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416080382] [2023-08-30 15:38:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:44,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:44,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:44,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:38:44,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:38:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:45,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:38:45,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:45,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:38:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:38:45,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416080382] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:38:45,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:38:45,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 15:38:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689738961] [2023-08-30 15:38:45,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:38:45,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:38:45,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:45,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:38:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:38:45,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 564 [2023-08-30 15:38:45,232 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) [2023-08-30 15:38:45,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:45,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 564 [2023-08-30 15:38:45,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:39:22,963 INFO L130 PetriNetUnfolder]: 326866/410028 cut-off events. [2023-08-30 15:39:22,963 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 15:39:23,890 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. [2023-08-30 15:39:25,216 INFO L137 encePairwiseOnDemand]: 556/564 looper letters, 447 selfloop transitions, 51 changer transitions 0/504 dead transitions. [2023-08-30 15:39:25,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 504 transitions, 2357 flow [2023-08-30 15:39:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:39:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:39:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3198 transitions. [2023-08-30 15:39:25,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725177304964539 [2023-08-30 15:39:25,224 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3198 transitions. [2023-08-30 15:39:25,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3198 transitions. [2023-08-30 15:39:25,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:39:25,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3198 transitions. [2023-08-30 15:39:25,232 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) [2023-08-30 15:39:25,239 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) [2023-08-30 15:39:25,241 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) [2023-08-30 15:39:25,241 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 289 flow. Second operand 12 states and 3198 transitions. [2023-08-30 15:39:25,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 504 transitions, 2357 flow [2023-08-30 15:39:25,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 504 transitions, 2333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:39:25,248 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 637 flow [2023-08-30 15:39:25,249 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} [2023-08-30 15:39:25,249 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-08-30 15:39:25,250 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 637 flow [2023-08-30 15:39:25,251 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) [2023-08-30 15:39:25,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:39:25,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:39:25,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:39:25,456 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 [2023-08-30 15:39:25,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-08-30 15:39:25,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:39:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1407402982, now seen corresponding path program 1 times [2023-08-30 15:39:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:39:25,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422568270] [2023-08-30 15:39:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:39:25,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:39:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:39:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:39:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:39:25,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422568270] [2023-08-30 15:39:25,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422568270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:39:25,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:39:25,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:39:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846153862] [2023-08-30 15:39:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:39:25,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:39:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:39:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:39:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:39:25,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 564 [2023-08-30 15:39:25,549 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) [2023-08-30 15:39:25,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:39:25,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 564 [2023-08-30 15:39:25,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand