./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i --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/goblint-regression/28-race_reach_42-trylock2_racefree.i -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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --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 14:15:35,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:15:35,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:15:35,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:15:35,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:15:35,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:15:35,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:15:35,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:15:35,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:15:35,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:15:35,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:15:35,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:15:35,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:15:35,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:15:35,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:15:35,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:15:35,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:15:35,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:15:35,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:15:35,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:15:35,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:15:35,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:15:35,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:15:35,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:15:35,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:15:35,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:15:35,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:15:35,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:15:35,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:15:35,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:15:35,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:15:35,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:15:35,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:15:35,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:15:35,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:15:35,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:15:35,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:15:35,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:15:35,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:15:35,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:15:35,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:15:35,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:15:36,017 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:15:36,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:15:36,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:15:36,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:15:36,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:15:36,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:15:36,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:15:36,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:15:36,020 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:15:36,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:15:36,021 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:15:36,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:15:36,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:15:36,022 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:15:36,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:15:36,023 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:15:36,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:15:36,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:15:36,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:15:36,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:15:36,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:15:36,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:15:36,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:15:36,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:15:36,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:15:36,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:15:36,024 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:15:36,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:15:36,025 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:15:36,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:15:36,025 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:15:36,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:15:36,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:15:36,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:15:36,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:15:36,258 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:15:36,258 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:15:36,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-30 14:15:37,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:15:37,323 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:15:37,324 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-30 14:15:37,333 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d856decde/bab4832186224ebaa0601efacd897e5c/FLAG30ac932a7 [2023-08-30 14:15:37,341 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d856decde/bab4832186224ebaa0601efacd897e5c [2023-08-30 14:15:37,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:15:37,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:15:37,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:15:37,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:15:37,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:15:37,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625e8502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37, skipping insertion in model container [2023-08-30 14:15:37,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:15:37,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:15:37,581 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2023-08-30 14:15:37,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:15:37,616 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:15:37,646 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i[30176,30189] [2023-08-30 14:15:37,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:15:37,736 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:15:37,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37 WrapperNode [2023-08-30 14:15:37,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:15:37,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:15:37,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:15:37,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:15:37,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,788 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-08-30 14:15:37,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:15:37,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:15:37,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:15:37,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:15:37,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,830 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:15:37,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:15:37,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:15:37,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:15:37,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (1/1) ... [2023-08-30 14:15:37,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:15:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:37,870 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 14:15:37,875 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 14:15:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:15:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:15:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:15:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:15:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:15:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:15:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:15:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:15:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-30 14:15:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:15:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:15:37,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:15:37,899 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 14:15:37,985 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:15:37,996 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:15:38,268 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:15:38,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:15:38,274 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 14:15:38,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:15:38 BoogieIcfgContainer [2023-08-30 14:15:38,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:15:38,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:15:38,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:15:38,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:15:38,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:15:37" (1/3) ... [2023-08-30 14:15:38,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537de864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:15:38, skipping insertion in model container [2023-08-30 14:15:38,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:15:37" (2/3) ... [2023-08-30 14:15:38,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537de864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:15:38, skipping insertion in model container [2023-08-30 14:15:38,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:15:38" (3/3) ... [2023-08-30 14:15:38,281 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-08-30 14:15:38,286 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:15:38,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:15:38,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 14:15:38,292 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:15:38,341 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 14:15:38,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 204 transitions, 416 flow [2023-08-30 14:15:38,427 INFO L130 PetriNetUnfolder]: 45/285 cut-off events. [2023-08-30 14:15:38,428 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:15:38,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 285 events. 45/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1048 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-08-30 14:15:38,435 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 204 transitions, 416 flow [2023-08-30 14:15:38,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 201 transitions, 410 flow [2023-08-30 14:15:38,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:15:38,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 201 transitions, 410 flow [2023-08-30 14:15:38,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 201 transitions, 410 flow [2023-08-30 14:15:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 201 transitions, 410 flow [2023-08-30 14:15:38,508 INFO L130 PetriNetUnfolder]: 44/282 cut-off events. [2023-08-30 14:15:38,509 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:15:38,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 282 events. 44/282 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1049 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 159. Up to 6 conditions per place. [2023-08-30 14:15:38,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 12558 [2023-08-30 14:15:41,436 INFO L134 LiptonReduction]: Checked pairs total: 24963 [2023-08-30 14:15:41,436 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-30 14:15:41,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:15:41,455 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;@1475cb99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:15:41,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-30 14:15:41,457 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-08-30 14:15:41,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:15:41,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:41,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:15:41,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:41,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash 24283485, now seen corresponding path program 1 times [2023-08-30 14:15:41,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:41,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709570256] [2023-08-30 14:15:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:41,616 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 14:15:41,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:41,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709570256] [2023-08-30 14:15:41,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709570256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:41,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:41,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:41,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122778638] [2023-08-30 14:15:41,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:41,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:41,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:41,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 367 [2023-08-30 14:15:41,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 87 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 14:15:41,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:41,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 367 [2023-08-30 14:15:41,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:41,840 INFO L130 PetriNetUnfolder]: 505/1187 cut-off events. [2023-08-30 14:15:41,840 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:15:41,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 1187 events. 505/1187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6795 event pairs, 0 based on Foata normal form. 192/1110 useless extension candidates. Maximal degree in co-relation 2185. Up to 1009 conditions per place. [2023-08-30 14:15:41,845 INFO L137 encePairwiseOnDemand]: 337/367 looper letters, 73 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 14:15:41,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 324 flow [2023-08-30 14:15:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-30 14:15:41,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594913714804723 [2023-08-30 14:15:41,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-30 14:15:41,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-30 14:15:41,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:41,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-30 14:15:41,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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 14:15:41,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 14:15:41,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 14:15:41,866 INFO L175 Difference]: Start difference. First operand has 65 places, 87 transitions, 182 flow. Second operand 3 states and 616 transitions. [2023-08-30 14:15:41,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 324 flow [2023-08-30 14:15:41,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:41,871 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 132 flow [2023-08-30 14:15:41,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 14:15:41,874 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -2 predicate places. [2023-08-30 14:15:41,874 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 132 flow [2023-08-30 14:15:41,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 14:15:41,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:41,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:15:41,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:15:41,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:41,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1861613600, now seen corresponding path program 1 times [2023-08-30 14:15:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:41,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094514867] [2023-08-30 14:15:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:41,978 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 14:15:41,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094514867] [2023-08-30 14:15:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094514867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:41,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:41,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907873350] [2023-08-30 14:15:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:41,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:41,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:41,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:41,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2023-08-30 14:15:41,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 14:15:41,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:41,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2023-08-30 14:15:41,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:42,106 INFO L130 PetriNetUnfolder]: 499/1043 cut-off events. [2023-08-30 14:15:42,106 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-30 14:15:42,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1043 events. 499/1043 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5434 event pairs, 76 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 2101. Up to 902 conditions per place. [2023-08-30 14:15:42,110 INFO L137 encePairwiseOnDemand]: 362/367 looper letters, 66 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 14:15:42,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 309 flow [2023-08-30 14:15:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-30 14:15:42,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522252497729337 [2023-08-30 14:15:42,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-30 14:15:42,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-30 14:15:42,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:42,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-30 14:15:42,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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 14:15:42,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 14:15:42,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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 14:15:42,116 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 132 flow. Second operand 3 states and 575 transitions. [2023-08-30 14:15:42,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 309 flow [2023-08-30 14:15:42,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:15:42,117 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 132 flow [2023-08-30 14:15:42,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 14:15:42,118 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2023-08-30 14:15:42,118 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 132 flow [2023-08-30 14:15:42,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 14:15:42,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:42,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:15:42,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:15:42,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-30 14:15:42,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:42,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1861643637, now seen corresponding path program 1 times [2023-08-30 14:15:42,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:42,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655350921] [2023-08-30 14:15:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:42,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:15:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:42,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:15:42,166 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:15:42,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-30 14:15:42,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-30 14:15:42,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-30 14:15:42,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-30 14:15:42,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-30 14:15:42,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-30 14:15:42,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-30 14:15:42,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-30 14:15:42,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-30 14:15:42,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-30 14:15:42,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-30 14:15:42,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-30 14:15:42,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-30 14:15:42,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-30 14:15:42,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-30 14:15:42,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-30 14:15:42,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-30 14:15:42,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-30 14:15:42,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-30 14:15:42,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-30 14:15:42,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-30 14:15:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:15:42,176 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 14:15:42,178 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:15:42,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:15:42,211 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:15:42,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 275 transitions, 568 flow [2023-08-30 14:15:42,270 INFO L130 PetriNetUnfolder]: 76/473 cut-off events. [2023-08-30 14:15:42,270 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:15:42,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 473 events. 76/473 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2000 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 287. Up to 9 conditions per place. [2023-08-30 14:15:42,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 275 transitions, 568 flow [2023-08-30 14:15:42,276 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 275 transitions, 568 flow [2023-08-30 14:15:42,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:15:42,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 275 transitions, 568 flow [2023-08-30 14:15:42,277 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 275 transitions, 568 flow [2023-08-30 14:15:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 275 transitions, 568 flow [2023-08-30 14:15:42,313 INFO L130 PetriNetUnfolder]: 76/473 cut-off events. [2023-08-30 14:15:42,313 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 14:15:42,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 473 events. 76/473 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2000 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 287. Up to 9 conditions per place. [2023-08-30 14:15:42,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 37260 [2023-08-30 14:15:45,184 INFO L134 LiptonReduction]: Checked pairs total: 99860 [2023-08-30 14:15:45,185 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-30 14:15:45,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:15:45,186 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;@1475cb99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:15:45,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-30 14:15:45,188 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-08-30 14:15:45,188 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:15:45,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:45,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:15:45,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:15:45,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1276499168, now seen corresponding path program 1 times [2023-08-30 14:15:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:45,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451638818] [2023-08-30 14:15:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:45,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:45,212 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 14:15:45,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:45,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451638818] [2023-08-30 14:15:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451638818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:45,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:45,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352708511] [2023-08-30 14:15:45,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:45,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 478 [2023-08-30 14:15:45,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 132 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 14:15:45,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:45,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 478 [2023-08-30 14:15:45,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:47,903 INFO L130 PetriNetUnfolder]: 31960/50699 cut-off events. [2023-08-30 14:15:47,904 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-30 14:15:47,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99823 conditions, 50699 events. 31960/50699 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 387289 event pairs, 22487 based on Foata normal form. 6610/42742 useless extension candidates. Maximal degree in co-relation 34478. Up to 48929 conditions per place. [2023-08-30 14:15:48,115 INFO L137 encePairwiseOnDemand]: 439/478 looper letters, 106 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-30 14:15:48,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 123 transitions, 480 flow [2023-08-30 14:15:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-30 14:15:48,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781032078103208 [2023-08-30 14:15:48,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-30 14:15:48,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-30 14:15:48,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:48,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-30 14:15:48,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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 14:15:48,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 14:15:48,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 14:15:48,124 INFO L175 Difference]: Start difference. First operand has 100 places, 132 transitions, 282 flow. Second operand 3 states and 829 transitions. [2023-08-30 14:15:48,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 123 transitions, 480 flow [2023-08-30 14:15:48,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 123 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:15:48,129 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 228 flow [2023-08-30 14:15:48,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2023-08-30 14:15:48,131 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 2 predicate places. [2023-08-30 14:15:48,131 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 228 flow [2023-08-30 14:15:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 14:15:48,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:48,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:15:48,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:15:48,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:15:48,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:48,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1632703732, now seen corresponding path program 1 times [2023-08-30 14:15:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793065681] [2023-08-30 14:15:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:48,183 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 14:15:48,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793065681] [2023-08-30 14:15:48,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793065681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:48,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490302915] [2023-08-30 14:15:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:48,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 478 [2023-08-30 14:15:48,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 14:15:48,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:48,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 478 [2023-08-30 14:15:48,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:50,646 INFO L130 PetriNetUnfolder]: 33459/52939 cut-off events. [2023-08-30 14:15:50,647 INFO L131 PetriNetUnfolder]: For 1601/1601 co-relation queries the response was YES. [2023-08-30 14:15:50,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107217 conditions, 52939 events. 33459/52939 cut-off events. For 1601/1601 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 400683 event pairs, 13468 based on Foata normal form. 0/39046 useless extension candidates. Maximal degree in co-relation 107054. Up to 50158 conditions per place. [2023-08-30 14:15:50,832 INFO L137 encePairwiseOnDemand]: 470/478 looper letters, 115 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2023-08-30 14:15:50,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 131 transitions, 546 flow [2023-08-30 14:15:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:50,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2023-08-30 14:15:50,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509065550906556 [2023-08-30 14:15:50,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2023-08-30 14:15:50,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2023-08-30 14:15:50,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:50,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2023-08-30 14:15:50,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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 14:15:50,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 14:15:50,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 14:15:50,839 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 228 flow. Second operand 3 states and 790 transitions. [2023-08-30 14:15:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 131 transitions, 546 flow [2023-08-30 14:15:50,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 131 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:50,844 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 253 flow [2023-08-30 14:15:50,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2023-08-30 14:15:50,846 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2023-08-30 14:15:50,846 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 253 flow [2023-08-30 14:15:50,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 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 14:15:50,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:50,847 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:15:50,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:15:50,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:15:50,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash -163877004, now seen corresponding path program 1 times [2023-08-30 14:15:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:50,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798962252] [2023-08-30 14:15:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:50,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:15:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798962252] [2023-08-30 14:15:50,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798962252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:50,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:50,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:15:50,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847869749] [2023-08-30 14:15:50,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:50,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:50,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:50,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:50,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 478 [2023-08-30 14:15:50,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 14:15:50,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:50,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 478 [2023-08-30 14:15:50,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:53,211 INFO L130 PetriNetUnfolder]: 30399/48554 cut-off events. [2023-08-30 14:15:53,211 INFO L131 PetriNetUnfolder]: For 1749/1749 co-relation queries the response was YES. [2023-08-30 14:15:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100321 conditions, 48554 events. 30399/48554 cut-off events. For 1749/1749 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 391666 event pairs, 3246 based on Foata normal form. 0/37784 useless extension candidates. Maximal degree in co-relation 90482. Up to 41465 conditions per place. [2023-08-30 14:15:53,369 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 129 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2023-08-30 14:15:53,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 150 transitions, 625 flow [2023-08-30 14:15:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:15:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:15:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 802 transitions. [2023-08-30 14:15:53,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592747559274756 [2023-08-30 14:15:53,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 802 transitions. [2023-08-30 14:15:53,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 802 transitions. [2023-08-30 14:15:53,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:53,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 802 transitions. [2023-08-30 14:15:53,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 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 14:15:53,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 14:15:53,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 14:15:53,376 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 253 flow. Second operand 3 states and 802 transitions. [2023-08-30 14:15:53,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 150 transitions, 625 flow [2023-08-30 14:15:53,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 150 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:53,382 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 262 flow [2023-08-30 14:15:53,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-30 14:15:53,383 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2023-08-30 14:15:53,383 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 262 flow [2023-08-30 14:15:53,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 14:15:53,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:53,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:15:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:15:53,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:15:53,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash -163877005, now seen corresponding path program 1 times [2023-08-30 14:15:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:53,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853932994] [2023-08-30 14:15:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:15:53,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853932994] [2023-08-30 14:15:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853932994] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:15:53,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583386932] [2023-08-30 14:15:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:53,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:15:53,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:15:53,419 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 14:15:53,428 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 14:15:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:53,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:15:53,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:15:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:15:53,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:15:53,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583386932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:53,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:15:53,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:15:53,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093926913] [2023-08-30 14:15:53,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:15:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:53,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:15:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:15:53,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 478 [2023-08-30 14:15:53,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 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 14:15:53,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:53,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 478 [2023-08-30 14:15:53,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:15:55,938 INFO L130 PetriNetUnfolder]: 29115/46302 cut-off events. [2023-08-30 14:15:55,938 INFO L131 PetriNetUnfolder]: For 7698/7698 co-relation queries the response was YES. [2023-08-30 14:15:55,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97589 conditions, 46302 events. 29115/46302 cut-off events. For 7698/7698 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 349072 event pairs, 21692 based on Foata normal form. 680/37174 useless extension candidates. Maximal degree in co-relation 33591. Up to 44797 conditions per place. [2023-08-30 14:15:56,079 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 102 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-30 14:15:56,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 121 transitions, 510 flow [2023-08-30 14:15:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:15:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:15:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2023-08-30 14:15:56,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235355648535565 [2023-08-30 14:15:56,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2023-08-30 14:15:56,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2023-08-30 14:15:56,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:15:56,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2023-08-30 14:15:56,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 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 14:15:56,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 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 14:15:56,087 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 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 14:15:56,087 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 262 flow. Second operand 4 states and 1001 transitions. [2023-08-30 14:15:56,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 121 transitions, 510 flow [2023-08-30 14:15:56,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 121 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:15:56,092 INFO L231 Difference]: Finished difference. Result has 106 places, 99 transitions, 258 flow [2023-08-30 14:15:56,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=106, PETRI_TRANSITIONS=99} [2023-08-30 14:15:56,093 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2023-08-30 14:15:56,093 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 99 transitions, 258 flow [2023-08-30 14:15:56,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 225.75) internal successors, (903), 4 states have internal predecessors, (903), 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 14:15:56,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:56,094 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:15:56,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:15:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:15:56,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-08-30 14:15:56,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1428072887, now seen corresponding path program 1 times [2023-08-30 14:15:56,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57204400] [2023-08-30 14:15:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:56,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:15:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:15:56,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:15:56,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:15:56,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-30 14:15:56,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-08-30 14:15:56,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-08-30 14:15:56,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-08-30 14:15:56,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-08-30 14:15:56,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-08-30 14:15:56,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:15:56,336 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:15:56,336 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:15:56,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:15:56,358 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:15:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 346 transitions, 722 flow [2023-08-30 14:15:56,414 INFO L130 PetriNetUnfolder]: 112/700 cut-off events. [2023-08-30 14:15:56,414 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:15:56,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 700 events. 112/700 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3164 event pairs, 1 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2023-08-30 14:15:56,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 346 transitions, 722 flow [2023-08-30 14:15:56,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 346 transitions, 722 flow [2023-08-30 14:15:56,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:15:56,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 346 transitions, 722 flow [2023-08-30 14:15:56,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 346 transitions, 722 flow [2023-08-30 14:15:56,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 346 transitions, 722 flow [2023-08-30 14:15:56,479 INFO L130 PetriNetUnfolder]: 112/700 cut-off events. [2023-08-30 14:15:56,479 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 14:15:56,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 700 events. 112/700 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3164 event pairs, 1 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 481. Up to 16 conditions per place. [2023-08-30 14:15:56,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 70794 [2023-08-30 14:15:59,915 INFO L134 LiptonReduction]: Checked pairs total: 204619 [2023-08-30 14:15:59,916 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-30 14:15:59,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:15:59,917 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;@1475cb99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:15:59,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-30 14:15:59,919 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 14:15:59,919 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:15:59,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:15:59,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:15:59,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-30 14:15:59,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:15:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1912314475, now seen corresponding path program 1 times [2023-08-30 14:15:59,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:15:59,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405095286] [2023-08-30 14:15:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:15:59,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:15:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:15:59,946 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 14:15:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:15:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405095286] [2023-08-30 14:15:59,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405095286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:15:59,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:15:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:15:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119547929] [2023-08-30 14:15:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:15:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:15:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:15:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:15:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:15:59,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 596 [2023-08-30 14:15:59,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 174 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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 14:15:59,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:15:59,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 596 [2023-08-30 14:15:59,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand