./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:48:58,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:48:58,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:48:59,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:48:59,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:48:59,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:48:59,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:48:59,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:48:59,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:48:59,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:48:59,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:48:59,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:48:59,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:48:59,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:48:59,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:48:59,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:48:59,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:48:59,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:48:59,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:48:59,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:48:59,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:48:59,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:48:59,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:48:59,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:48:59,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:48:59,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:48:59,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:48:59,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:48:59,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:48:59,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:48:59,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:48:59,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:48:59,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:48:59,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:48:59,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:48:59,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:48:59,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:48:59,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:48:59,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:48:59,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:48:59,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:48:59,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:48:59,093 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:48:59,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:48:59,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:48:59,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:48:59,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:48:59,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:48:59,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:48:59,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:48:59,097 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:48:59,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:48:59,098 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:48:59,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:48:59,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:48:59,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:48:59,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:48:59,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:48:59,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:48:59,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:48:59,100 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:48:59,100 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:48:59,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:48:59,100 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:48:59,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:48:59,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:48:59,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:48:59,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:48:59,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:59,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:48:59,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:48:59,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:48:59,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:48:59,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:48:59,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:48:59,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:48:59,104 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:48:59,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:48:59,104 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:48:59,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:48:59,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:48:59,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:48:59,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:48:59,461 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:48:59,461 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:48:59,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-30 11:49:00,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:49:00,867 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:49:00,867 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-30 11:49:00,873 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e9cc0c2/a36fb02bdf374ae8bbbf26799dc32f80/FLAGc8986e73a [2023-08-30 11:49:00,887 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76e9cc0c2/a36fb02bdf374ae8bbbf26799dc32f80 [2023-08-30 11:49:00,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:49:00,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:49:00,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:49:00,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:49:00,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:49:00,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:49:00" (1/1) ... [2023-08-30 11:49:00,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348a89d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:00, skipping insertion in model container [2023-08-30 11:49:00,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:49:00" (1/1) ... [2023-08-30 11:49:00,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:49:00,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:49:01,044 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-08-30 11:49:01,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:49:01,057 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:49:01,077 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2023-08-30 11:49:01,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:49:01,093 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:49:01,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01 WrapperNode [2023-08-30 11:49:01,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:49:01,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:49:01,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:49:01,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:49:01,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,131 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 208 [2023-08-30 11:49:01,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:49:01,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:49:01,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:49:01,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:49:01,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,168 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:49:01,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:49:01,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:49:01,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:49:01,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (1/1) ... [2023-08-30 11:49:01,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:49:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:01,214 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 11:49:01,235 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 11:49:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:49:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:49:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:49:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:49:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:49:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:49:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:49:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:49:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:49:01,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:49:01,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:49:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:49:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:49:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:49:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:49:01,254 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 11:49:01,340 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:49:01,341 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:49:01,778 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:49:01,799 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:49:01,800 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 11:49:01,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:49:01 BoogieIcfgContainer [2023-08-30 11:49:01,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:49:01,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:49:01,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:49:01,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:49:01,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:49:00" (1/3) ... [2023-08-30 11:49:01,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5012b74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:49:01, skipping insertion in model container [2023-08-30 11:49:01,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:49:01" (2/3) ... [2023-08-30 11:49:01,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5012b74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:49:01, skipping insertion in model container [2023-08-30 11:49:01,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:49:01" (3/3) ... [2023-08-30 11:49:01,813 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-08-30 11:49:01,820 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:49:01,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:49:01,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 11:49:01,828 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:49:01,919 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:49:01,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 299 transitions, 622 flow [2023-08-30 11:49:02,090 INFO L130 PetriNetUnfolder]: 25/296 cut-off events. [2023-08-30 11:49:02,090 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:49:02,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 296 events. 25/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 278 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2023-08-30 11:49:02,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 299 transitions, 622 flow [2023-08-30 11:49:02,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 263 transitions, 541 flow [2023-08-30 11:49:02,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:49:02,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 263 transitions, 541 flow [2023-08-30 11:49:02,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 263 transitions, 541 flow [2023-08-30 11:49:02,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 263 transitions, 541 flow [2023-08-30 11:49:02,186 INFO L130 PetriNetUnfolder]: 23/263 cut-off events. [2023-08-30 11:49:02,190 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:49:02,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 263 events. 23/263 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 273 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2023-08-30 11:49:02,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2023-08-30 11:49:09,252 INFO L134 LiptonReduction]: Checked pairs total: 7233 [2023-08-30 11:49:09,253 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-30 11:49:09,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:49:09,270 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;@54ed9611, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:49:09,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 11:49:09,273 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:49:09,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:49:09,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:09,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:49:09,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:09,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 34577, now seen corresponding path program 1 times [2023-08-30 11:49:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:09,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91507203] [2023-08-30 11:49:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:09,605 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 11:49:09,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91507203] [2023-08-30 11:49:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91507203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:49:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671394039] [2023-08-30 11:49:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:09,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:09,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:09,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:09,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-08-30 11:49:09,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 11:49:09,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:09,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-08-30 11:49:09,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:10,140 INFO L130 PetriNetUnfolder]: 3070/4355 cut-off events. [2023-08-30 11:49:10,142 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 11:49:10,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8837 conditions, 4355 events. 3070/4355 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 23724 event pairs, 2068 based on Foata normal form. 0/2238 useless extension candidates. Maximal degree in co-relation 3838. Up to 2121 conditions per place. [2023-08-30 11:49:10,183 INFO L137 encePairwiseOnDemand]: 568/584 looper letters, 67 selfloop transitions, 8 changer transitions 0/81 dead transitions. [2023-08-30 11:49:10,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 342 flow [2023-08-30 11:49:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-30 11:49:10,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4960045662100457 [2023-08-30 11:49:10,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-30 11:49:10,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-30 11:49:10,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:10,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-30 11:49:10,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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 11:49:10,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:10,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:10,228 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 111 flow. Second operand 3 states and 869 transitions. [2023-08-30 11:49:10,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 342 flow [2023-08-30 11:49:10,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 81 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:49:10,243 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 178 flow [2023-08-30 11:49:10,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2023-08-30 11:49:10,250 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-30 11:49:10,250 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 178 flow [2023-08-30 11:49:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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 11:49:10,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:10,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:49:10,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:49:10,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:10,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1073294, now seen corresponding path program 1 times [2023-08-30 11:49:10,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:10,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632636718] [2023-08-30 11:49:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:10,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632636718] [2023-08-30 11:49:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632636718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:49:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798099895] [2023-08-30 11:49:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:10,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:10,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-08-30 11:49:10,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 11:49:10,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:10,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-08-30 11:49:10,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:10,767 INFO L130 PetriNetUnfolder]: 3095/4371 cut-off events. [2023-08-30 11:49:10,767 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 11:49:10,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8807 conditions, 4371 events. 3095/4371 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 23797 event pairs, 2078 based on Foata normal form. 0/2227 useless extension candidates. Maximal degree in co-relation 4378. Up to 4247 conditions per place. [2023-08-30 11:49:10,791 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 44 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 11:49:10,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 252 flow [2023-08-30 11:49:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:10,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2023-08-30 11:49:10,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-08-30 11:49:10,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 828 transitions. [2023-08-30 11:49:10,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 828 transitions. [2023-08-30 11:49:10,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:10,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 828 transitions. [2023-08-30 11:49:10,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 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 11:49:10,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:10,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:10,801 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 178 flow. Second operand 3 states and 828 transitions. [2023-08-30 11:49:10,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 252 flow [2023-08-30 11:49:10,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:10,805 INFO L231 Difference]: Finished difference. Result has 46 places, 51 transitions, 148 flow [2023-08-30 11:49:10,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=46, PETRI_TRANSITIONS=51} [2023-08-30 11:49:10,806 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-08-30 11:49:10,806 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 51 transitions, 148 flow [2023-08-30 11:49:10,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 11:49:10,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:10,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:49:10,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:49:10,808 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:10,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1073308, now seen corresponding path program 1 times [2023-08-30 11:49:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:10,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534392017] [2023-08-30 11:49:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:10,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:10,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534392017] [2023-08-30 11:49:10,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534392017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:10,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786465977] [2023-08-30 11:49:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:10,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:10,997 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 11:49:11,072 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 11:49:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:11,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:11,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:11,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786465977] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:11,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:49:11,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120967366] [2023-08-30 11:49:11,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:49:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:49:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:49:11,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 584 [2023-08-30 11:49:11,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 51 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 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 11:49:11,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:11,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 584 [2023-08-30 11:49:11,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:12,339 INFO L130 PetriNetUnfolder]: 7636/10840 cut-off events. [2023-08-30 11:49:12,339 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 11:49:12,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21770 conditions, 10840 events. 7636/10840 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 67119 event pairs, 5155 based on Foata normal form. 0/5699 useless extension candidates. Maximal degree in co-relation 21762. Up to 2130 conditions per place. [2023-08-30 11:49:12,411 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 141 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2023-08-30 11:49:12,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 176 transitions, 804 flow [2023-08-30 11:49:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:49:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:49:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1754 transitions. [2023-08-30 11:49:12,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005707762557078 [2023-08-30 11:49:12,417 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1754 transitions. [2023-08-30 11:49:12,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1754 transitions. [2023-08-30 11:49:12,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:12,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1754 transitions. [2023-08-30 11:49:12,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 292.3333333333333) internal successors, (1754), 6 states have internal predecessors, (1754), 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 11:49:12,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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 11:49:12,430 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 584.0) internal successors, (4088), 7 states have internal predecessors, (4088), 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 11:49:12,430 INFO L175 Difference]: Start difference. First operand has 46 places, 51 transitions, 148 flow. Second operand 6 states and 1754 transitions. [2023-08-30 11:49:12,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 176 transitions, 804 flow [2023-08-30 11:49:12,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 176 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:12,434 INFO L231 Difference]: Finished difference. Result has 53 places, 72 transitions, 354 flow [2023-08-30 11:49:12,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=53, PETRI_TRANSITIONS=72} [2023-08-30 11:49:12,435 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-30 11:49:12,435 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 72 transitions, 354 flow [2023-08-30 11:49:12,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 263.14285714285717) internal successors, (1842), 7 states have internal predecessors, (1842), 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 11:49:12,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:12,437 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:49:12,444 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 11:49:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:12,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:12,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1911127647, now seen corresponding path program 2 times [2023-08-30 11:49:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:12,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855522068] [2023-08-30 11:49:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:12,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855522068] [2023-08-30 11:49:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855522068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093983473] [2023-08-30 11:49:12,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:12,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:12,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:12,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:49:12,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:12,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:49:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:49:12,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:12,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093983473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:12,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:12,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:49:12,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710188065] [2023-08-30 11:49:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:12,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:12,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:49:12,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 584 [2023-08-30 11:49:12,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 72 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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 11:49:12,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:12,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 584 [2023-08-30 11:49:12,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:13,698 INFO L130 PetriNetUnfolder]: 7736/10919 cut-off events. [2023-08-30 11:49:13,699 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-30 11:49:13,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22033 conditions, 10919 events. 7736/10919 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 67117 event pairs, 5195 based on Foata normal form. 1/5564 useless extension candidates. Maximal degree in co-relation 22021. Up to 10604 conditions per place. [2023-08-30 11:49:13,771 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 59 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-08-30 11:49:13,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 474 flow [2023-08-30 11:49:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-08-30 11:49:13,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771689497716895 [2023-08-30 11:49:13,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-08-30 11:49:13,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-08-30 11:49:13,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:13,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-08-30 11:49:13,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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 11:49:13,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:13,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:13,781 INFO L175 Difference]: Start difference. First operand has 53 places, 72 transitions, 354 flow. Second operand 3 states and 836 transitions. [2023-08-30 11:49:13,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 474 flow [2023-08-30 11:49:13,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 433 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:13,787 INFO L231 Difference]: Finished difference. Result has 53 places, 71 transitions, 315 flow [2023-08-30 11:49:13,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=53, PETRI_TRANSITIONS=71} [2023-08-30 11:49:13,789 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-08-30 11:49:13,789 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 71 transitions, 315 flow [2023-08-30 11:49:13,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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 11:49:13,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:13,791 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 11:49:13,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:49:13,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 11:49:13,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:13,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash 57314924, now seen corresponding path program 1 times [2023-08-30 11:49:13,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:13,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798257197] [2023-08-30 11:49:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:13,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:49:14,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:14,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798257197] [2023-08-30 11:49:14,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798257197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:14,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:14,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:49:14,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127384714] [2023-08-30 11:49:14,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:14,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:49:14,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 584 [2023-08-30 11:49:14,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 71 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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 11:49:14,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:14,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 584 [2023-08-30 11:49:14,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:15,129 INFO L130 PetriNetUnfolder]: 7636/10842 cut-off events. [2023-08-30 11:49:15,129 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-08-30 11:49:15,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 10842 events. 7636/10842 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 66000 event pairs, 5155 based on Foata normal form. 3/5793 useless extension candidates. Maximal degree in co-relation 21810. Up to 8360 conditions per place. [2023-08-30 11:49:15,199 INFO L137 encePairwiseOnDemand]: 575/584 looper letters, 73 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2023-08-30 11:49:15,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 100 transitions, 571 flow [2023-08-30 11:49:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:49:15,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:49:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1084 transitions. [2023-08-30 11:49:15,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464041095890411 [2023-08-30 11:49:15,203 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1084 transitions. [2023-08-30 11:49:15,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1084 transitions. [2023-08-30 11:49:15,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:15,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1084 transitions. [2023-08-30 11:49:15,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.0) internal successors, (1084), 4 states have internal predecessors, (1084), 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 11:49:15,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:15,215 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:15,216 INFO L175 Difference]: Start difference. First operand has 53 places, 71 transitions, 315 flow. Second operand 4 states and 1084 transitions. [2023-08-30 11:49:15,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 100 transitions, 571 flow [2023-08-30 11:49:15,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:15,220 INFO L231 Difference]: Finished difference. Result has 55 places, 74 transitions, 382 flow [2023-08-30 11:49:15,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=55, PETRI_TRANSITIONS=74} [2023-08-30 11:49:15,221 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-30 11:49:15,222 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 74 transitions, 382 flow [2023-08-30 11:49:15,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 253.25) internal successors, (1013), 4 states have internal predecessors, (1013), 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 11:49:15,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:15,223 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 11:49:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:49:15,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:15,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -710403313, now seen corresponding path program 1 times [2023-08-30 11:49:15,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:15,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278965810] [2023-08-30 11:49:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:15,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:49:15,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:15,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278965810] [2023-08-30 11:49:15,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278965810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:15,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051269756] [2023-08-30 11:49:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:15,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:15,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:15,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:15,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:49:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:15,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 11:49:15,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:49:15,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:49:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051269756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:15,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:15,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 11:49:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554321944] [2023-08-30 11:49:15,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 11:49:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 11:49:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 11:49:16,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 584 [2023-08-30 11:49:16,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 74 transitions, 382 flow. Second operand has 14 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 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 11:49:16,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:16,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 584 [2023-08-30 11:49:16,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:17,371 INFO L130 PetriNetUnfolder]: 9157/13006 cut-off events. [2023-08-30 11:49:17,372 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-08-30 11:49:17,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26216 conditions, 13006 events. 9157/13006 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 78734 event pairs, 6184 based on Foata normal form. 3/6964 useless extension candidates. Maximal degree in co-relation 26202. Up to 6252 conditions per place. [2023-08-30 11:49:17,439 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 116 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2023-08-30 11:49:17,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 160 transitions, 934 flow [2023-08-30 11:49:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 11:49:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 11:49:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2623 transitions. [2023-08-30 11:49:17,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44914383561643834 [2023-08-30 11:49:17,448 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2623 transitions. [2023-08-30 11:49:17,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2623 transitions. [2023-08-30 11:49:17,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:17,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2623 transitions. [2023-08-30 11:49:17,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 262.3) internal successors, (2623), 10 states have internal predecessors, (2623), 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 11:49:17,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 584.0) internal successors, (6424), 11 states have internal predecessors, (6424), 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 11:49:17,464 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 584.0) internal successors, (6424), 11 states have internal predecessors, (6424), 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 11:49:17,464 INFO L175 Difference]: Start difference. First operand has 55 places, 74 transitions, 382 flow. Second operand 10 states and 2623 transitions. [2023-08-30 11:49:17,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 160 transitions, 934 flow [2023-08-30 11:49:17,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 902 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:17,468 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 532 flow [2023-08-30 11:49:17,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=532, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-30 11:49:17,468 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-08-30 11:49:17,469 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 532 flow [2023-08-30 11:49:17,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 249.28571428571428) internal successors, (3490), 14 states have internal predecessors, (3490), 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 11:49:17,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:17,470 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-30 11:49:17,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:49:17,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:17,676 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:17,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1260135116, now seen corresponding path program 2 times [2023-08-30 11:49:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:17,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470436430] [2023-08-30 11:49:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 11:49:17,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470436430] [2023-08-30 11:49:17,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470436430] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975232910] [2023-08-30 11:49:17,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:17,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:17,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:49:17,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:17,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:17,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:49:17,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-30 11:49:17,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975232910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:17,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 11:49:17,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519154538] [2023-08-30 11:49:17,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:17,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:17,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 11:49:18,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 584 [2023-08-30 11:49:18,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 11:49:18,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:18,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 584 [2023-08-30 11:49:18,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:18,924 INFO L130 PetriNetUnfolder]: 9282/13103 cut-off events. [2023-08-30 11:49:18,924 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-08-30 11:49:18,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26499 conditions, 13103 events. 9282/13103 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 79406 event pairs, 6234 based on Foata normal form. 3/6686 useless extension candidates. Maximal degree in co-relation 26482. Up to 12731 conditions per place. [2023-08-30 11:49:18,982 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 74 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2023-08-30 11:49:18,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 643 flow [2023-08-30 11:49:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-30 11:49:18,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731735159817352 [2023-08-30 11:49:18,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-30 11:49:18,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-30 11:49:18,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:18,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-30 11:49:18,988 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 11:49:18,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:18,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:18,991 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 532 flow. Second operand 3 states and 829 transitions. [2023-08-30 11:49:18,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 643 flow [2023-08-30 11:49:18,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 526 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-30 11:49:18,996 INFO L231 Difference]: Finished difference. Result has 57 places, 81 transitions, 378 flow [2023-08-30 11:49:18,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=57, PETRI_TRANSITIONS=81} [2023-08-30 11:49:18,998 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 11:49:18,998 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 81 transitions, 378 flow [2023-08-30 11:49:18,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 11:49:18,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:18,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:19,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:19,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:19,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:19,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1302289154, now seen corresponding path program 1 times [2023-08-30 11:49:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:19,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857590698] [2023-08-30 11:49:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:19,280 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 11:49:19,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857590698] [2023-08-30 11:49:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857590698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:19,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:49:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673616374] [2023-08-30 11:49:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:19,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:19,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:19,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 11:49:19,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 81 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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 11:49:19,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:19,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 11:49:19,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:20,756 INFO L130 PetriNetUnfolder]: 14424/21035 cut-off events. [2023-08-30 11:49:20,756 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-30 11:49:20,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41911 conditions, 21035 events. 14424/21035 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 143594 event pairs, 6582 based on Foata normal form. 0/12047 useless extension candidates. Maximal degree in co-relation 41897. Up to 12756 conditions per place. [2023-08-30 11:49:20,855 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-30 11:49:20,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 623 flow [2023-08-30 11:49:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 875 transitions. [2023-08-30 11:49:20,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994292237442922 [2023-08-30 11:49:20,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 875 transitions. [2023-08-30 11:49:20,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 875 transitions. [2023-08-30 11:49:20,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:20,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 875 transitions. [2023-08-30 11:49:20,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.6666666666667) internal successors, (875), 3 states have internal predecessors, (875), 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 11:49:20,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:20,864 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:20,864 INFO L175 Difference]: Start difference. First operand has 57 places, 81 transitions, 378 flow. Second operand 3 states and 875 transitions. [2023-08-30 11:49:20,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 623 flow [2023-08-30 11:49:20,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:20,867 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 391 flow [2023-08-30 11:49:20,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2023-08-30 11:49:20,870 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 11:49:20,870 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 391 flow [2023-08-30 11:49:20,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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 11:49:20,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:20,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 11:49:20,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:20,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1618201434, now seen corresponding path program 1 times [2023-08-30 11:49:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:20,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804875981] [2023-08-30 11:49:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:20,920 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 11:49:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804875981] [2023-08-30 11:49:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804875981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:49:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977428340] [2023-08-30 11:49:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:20,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 11:49:20,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 11:49:20,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:20,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 11:49:20,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:22,586 INFO L130 PetriNetUnfolder]: 18384/27617 cut-off events. [2023-08-30 11:49:22,586 INFO L131 PetriNetUnfolder]: For 2054/2054 co-relation queries the response was YES. [2023-08-30 11:49:22,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58502 conditions, 27617 events. 18384/27617 cut-off events. For 2054/2054 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 203265 event pairs, 9462 based on Foata normal form. 0/16751 useless extension candidates. Maximal degree in co-relation 58487. Up to 17220 conditions per place. [2023-08-30 11:49:22,682 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 96 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-30 11:49:22,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 642 flow [2023-08-30 11:49:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-30 11:49:22,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982876712328767 [2023-08-30 11:49:22,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-30 11:49:22,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-30 11:49:22,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:22,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-30 11:49:22,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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 11:49:22,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:22,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:22,690 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 391 flow. Second operand 3 states and 873 transitions. [2023-08-30 11:49:22,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 642 flow [2023-08-30 11:49:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:22,694 INFO L231 Difference]: Finished difference. Result has 61 places, 83 transitions, 403 flow [2023-08-30 11:49:22,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=61, PETRI_TRANSITIONS=83} [2023-08-30 11:49:22,695 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 11:49:22,695 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 403 flow [2023-08-30 11:49:22,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 11:49:22,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:22,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:22,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 11:49:22,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:22,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash 57525530, now seen corresponding path program 1 times [2023-08-30 11:49:22,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:22,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475481154] [2023-08-30 11:49:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475481154] [2023-08-30 11:49:22,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475481154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:22,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:49:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138284302] [2023-08-30 11:49:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:49:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:49:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:49:22,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 11:49:22,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 11:49:22,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:22,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 11:49:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:24,377 INFO L130 PetriNetUnfolder]: 16674/25019 cut-off events. [2023-08-30 11:49:24,378 INFO L131 PetriNetUnfolder]: For 3662/3662 co-relation queries the response was YES. [2023-08-30 11:49:24,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56355 conditions, 25019 events. 16674/25019 cut-off events. For 3662/3662 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 185589 event pairs, 876 based on Foata normal form. 0/15593 useless extension candidates. Maximal degree in co-relation 56339. Up to 21900 conditions per place. [2023-08-30 11:49:24,467 INFO L137 encePairwiseOnDemand]: 582/584 looper letters, 92 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-30 11:49:24,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 629 flow [2023-08-30 11:49:24,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:49:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:49:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 866 transitions. [2023-08-30 11:49:24,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942922374429224 [2023-08-30 11:49:24,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 866 transitions. [2023-08-30 11:49:24,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 866 transitions. [2023-08-30 11:49:24,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:24,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 866 transitions. [2023-08-30 11:49:24,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 288.6666666666667) internal successors, (866), 3 states have internal predecessors, (866), 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 11:49:24,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:24,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 11:49:24,475 INFO L175 Difference]: Start difference. First operand has 61 places, 83 transitions, 403 flow. Second operand 3 states and 866 transitions. [2023-08-30 11:49:24,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 629 flow [2023-08-30 11:49:24,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:24,482 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 399 flow [2023-08-30 11:49:24,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2023-08-30 11:49:24,483 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-30 11:49:24,483 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 399 flow [2023-08-30 11:49:24,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 11:49:24,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:24,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 11:49:24,484 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:24,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 57525531, now seen corresponding path program 1 times [2023-08-30 11:49:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:24,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960788739] [2023-08-30 11:49:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:24,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:24,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960788739] [2023-08-30 11:49:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960788739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:24,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681787705] [2023-08-30 11:49:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:24,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:24,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:24,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:49:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:24,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:49:24,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:49:24,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:24,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681787705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:24,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:24,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-08-30 11:49:24,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872477757] [2023-08-30 11:49:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:24,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:49:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:49:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:49:24,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 584 [2023-08-30 11:49:24,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 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 11:49:24,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:24,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 584 [2023-08-30 11:49:24,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:26,126 INFO L130 PetriNetUnfolder]: 13679/20449 cut-off events. [2023-08-30 11:49:26,126 INFO L131 PetriNetUnfolder]: For 4443/4443 co-relation queries the response was YES. [2023-08-30 11:49:26,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46615 conditions, 20449 events. 13679/20449 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 143409 event pairs, 10281 based on Foata normal form. 0/12748 useless extension candidates. Maximal degree in co-relation 46599. Up to 18154 conditions per place. [2023-08-30 11:49:26,195 INFO L137 encePairwiseOnDemand]: 573/584 looper letters, 87 selfloop transitions, 30 changer transitions 0/122 dead transitions. [2023-08-30 11:49:26,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 122 transitions, 748 flow [2023-08-30 11:49:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:49:26,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:49:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-08-30 11:49:26,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46164383561643835 [2023-08-30 11:49:26,198 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-08-30 11:49:26,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-08-30 11:49:26,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:26,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-08-30 11:49:26,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 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 11:49:26,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 11:49:26,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 11:49:26,206 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 399 flow. Second operand 5 states and 1348 transitions. [2023-08-30 11:49:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 122 transitions, 748 flow [2023-08-30 11:49:26,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 122 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:26,212 INFO L231 Difference]: Finished difference. Result has 66 places, 83 transitions, 476 flow [2023-08-30 11:49:26,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=66, PETRI_TRANSITIONS=83} [2023-08-30 11:49:26,213 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-30 11:49:26,213 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 83 transitions, 476 flow [2023-08-30 11:49:26,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.2) internal successors, (1276), 5 states have internal predecessors, (1276), 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 11:49:26,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:26,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:26,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:49:26,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-30 11:49:26,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:26,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash -685852427, now seen corresponding path program 1 times [2023-08-30 11:49:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:26,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026516811] [2023-08-30 11:49:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:26,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:26,483 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 11:49:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:26,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026516811] [2023-08-30 11:49:26,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026516811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:26,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:49:26,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427886738] [2023-08-30 11:49:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:26,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:49:26,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 584 [2023-08-30 11:49:26,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 83 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 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 11:49:26,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:26,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 584 [2023-08-30 11:49:26,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:27,612 INFO L130 PetriNetUnfolder]: 10564/16453 cut-off events. [2023-08-30 11:49:27,612 INFO L131 PetriNetUnfolder]: For 3534/3631 co-relation queries the response was YES. [2023-08-30 11:49:27,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37287 conditions, 16453 events. 10564/16453 cut-off events. For 3534/3631 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 119580 event pairs, 1954 based on Foata normal form. 97/12124 useless extension candidates. Maximal degree in co-relation 37268. Up to 11500 conditions per place. [2023-08-30 11:49:27,696 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 90 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 11:49:27,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 708 flow [2023-08-30 11:49:27,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:49:27,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:49:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1128 transitions. [2023-08-30 11:49:27,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828767123287671 [2023-08-30 11:49:27,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1128 transitions. [2023-08-30 11:49:27,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1128 transitions. [2023-08-30 11:49:27,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:27,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1128 transitions. [2023-08-30 11:49:27,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 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 11:49:27,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:27,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:27,707 INFO L175 Difference]: Start difference. First operand has 66 places, 83 transitions, 476 flow. Second operand 4 states and 1128 transitions. [2023-08-30 11:49:27,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 708 flow [2023-08-30 11:49:27,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:27,716 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 427 flow [2023-08-30 11:49:27,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2023-08-30 11:49:27,716 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-30 11:49:27,717 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 427 flow [2023-08-30 11:49:27,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 273.25) internal successors, (1093), 4 states have internal predecessors, (1093), 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 11:49:27,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:27,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:27,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 11:49:27,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:27,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -685852429, now seen corresponding path program 1 times [2023-08-30 11:49:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398534363] [2023-08-30 11:49:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:27,822 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 11:49:27,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:27,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398534363] [2023-08-30 11:49:27,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398534363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:27,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:49:27,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:49:27,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869890185] [2023-08-30 11:49:27,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:27,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:49:27,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:27,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:49:27,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:49:28,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 584 [2023-08-30 11:49:28,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 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 11:49:28,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:28,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 584 [2023-08-30 11:49:28,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:28,952 INFO L130 PetriNetUnfolder]: 10464/15946 cut-off events. [2023-08-30 11:49:28,952 INFO L131 PetriNetUnfolder]: For 3937/4018 co-relation queries the response was YES. [2023-08-30 11:49:28,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37390 conditions, 15946 events. 10464/15946 cut-off events. For 3937/4018 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 111231 event pairs, 8502 based on Foata normal form. 81/11730 useless extension candidates. Maximal degree in co-relation 37371. Up to 14454 conditions per place. [2023-08-30 11:49:29,034 INFO L137 encePairwiseOnDemand]: 572/584 looper letters, 73 selfloop transitions, 31 changer transitions 6/116 dead transitions. [2023-08-30 11:49:29,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 116 transitions, 747 flow [2023-08-30 11:49:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:49:29,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:49:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1336 transitions. [2023-08-30 11:49:29,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575342465753425 [2023-08-30 11:49:29,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1336 transitions. [2023-08-30 11:49:29,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1336 transitions. [2023-08-30 11:49:29,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:29,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1336 transitions. [2023-08-30 11:49:29,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 267.2) internal successors, (1336), 5 states have internal predecessors, (1336), 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 11:49:29,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 11:49:29,046 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 584.0) internal successors, (3504), 6 states have internal predecessors, (3504), 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 11:49:29,046 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 427 flow. Second operand 5 states and 1336 transitions. [2023-08-30 11:49:29,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 116 transitions, 747 flow [2023-08-30 11:49:29,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:29,111 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 507 flow [2023-08-30 11:49:29,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2023-08-30 11:49:29,112 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2023-08-30 11:49:29,112 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 507 flow [2023-08-30 11:49:29,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.6) internal successors, (1273), 5 states have internal predecessors, (1273), 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 11:49:29,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:29,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:29,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 11:49:29,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:29,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:29,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1128676485, now seen corresponding path program 1 times [2023-08-30 11:49:29,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793528608] [2023-08-30 11:49:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:29,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:29,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793528608] [2023-08-30 11:49:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793528608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123950158] [2023-08-30 11:49:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:29,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:29,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:29,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:29,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:49:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:29,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:29,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123950158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:29,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 11:49:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545051591] [2023-08-30 11:49:29,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:29,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:49:29,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:49:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:49:29,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 11:49:29,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 11:49:29,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:29,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 11:49:29,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:32,191 INFO L130 PetriNetUnfolder]: 26719/39993 cut-off events. [2023-08-30 11:49:32,191 INFO L131 PetriNetUnfolder]: For 14131/14310 co-relation queries the response was YES. [2023-08-30 11:49:32,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97741 conditions, 39993 events. 26719/39993 cut-off events. For 14131/14310 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 292225 event pairs, 4855 based on Foata normal form. 179/31754 useless extension candidates. Maximal degree in co-relation 97720. Up to 9741 conditions per place. [2023-08-30 11:49:32,463 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 171 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2023-08-30 11:49:32,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1212 flow [2023-08-30 11:49:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:49:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:49:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2028 transitions. [2023-08-30 11:49:32,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49608610567514677 [2023-08-30 11:49:32,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2028 transitions. [2023-08-30 11:49:32,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2028 transitions. [2023-08-30 11:49:32,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:32,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2028 transitions. [2023-08-30 11:49:32,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.7142857142857) internal successors, (2028), 7 states have internal predecessors, (2028), 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 11:49:32,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 584.0) internal successors, (4672), 8 states have internal predecessors, (4672), 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 11:49:32,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 584.0) internal successors, (4672), 8 states have internal predecessors, (4672), 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 11:49:32,477 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 507 flow. Second operand 7 states and 2028 transitions. [2023-08-30 11:49:32,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1212 flow [2023-08-30 11:49:32,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 186 transitions, 1161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:32,511 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 515 flow [2023-08-30 11:49:32,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2023-08-30 11:49:32,512 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-08-30 11:49:32,512 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 515 flow [2023-08-30 11:49:32,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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 11:49:32,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:32,513 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:32,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:32,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:32,714 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:32,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1128676483, now seen corresponding path program 1 times [2023-08-30 11:49:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334820959] [2023-08-30 11:49:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:32,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334820959] [2023-08-30 11:49:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334820959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389699552] [2023-08-30 11:49:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:32,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:32,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:32,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:32,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 11:49:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:32,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:32,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:32,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:32,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389699552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:32,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:32,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:49:32,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309023232] [2023-08-30 11:49:32,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:32,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:32,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:32,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:49:32,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 584 [2023-08-30 11:49:32,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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 11:49:32,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:32,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 584 [2023-08-30 11:49:32,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:35,486 INFO L130 PetriNetUnfolder]: 23844/36620 cut-off events. [2023-08-30 11:49:35,486 INFO L131 PetriNetUnfolder]: For 34127/34297 co-relation queries the response was YES. [2023-08-30 11:49:35,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94557 conditions, 36620 events. 23844/36620 cut-off events. For 34127/34297 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 280884 event pairs, 634 based on Foata normal form. 1266/32385 useless extension candidates. Maximal degree in co-relation 94534. Up to 26369 conditions per place. [2023-08-30 11:49:35,768 INFO L137 encePairwiseOnDemand]: 581/584 looper letters, 114 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-30 11:49:35,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 843 flow [2023-08-30 11:49:35,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:49:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:49:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1152 transitions. [2023-08-30 11:49:35,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-08-30 11:49:35,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1152 transitions. [2023-08-30 11:49:35,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1152 transitions. [2023-08-30 11:49:35,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:35,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1152 transitions. [2023-08-30 11:49:35,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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 11:49:35,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:35,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:35,778 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 515 flow. Second operand 4 states and 1152 transitions. [2023-08-30 11:49:35,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 843 flow [2023-08-30 11:49:35,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 835 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:49:36,000 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 484 flow [2023-08-30 11:49:36,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=484, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-08-30 11:49:36,000 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-08-30 11:49:36,000 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 484 flow [2023-08-30 11:49:36,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 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 11:49:36,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:36,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:36,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 11:49:36,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:36,203 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:36,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash -93188449, now seen corresponding path program 1 times [2023-08-30 11:49:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:36,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778954554] [2023-08-30 11:49:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 11:49:36,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:36,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778954554] [2023-08-30 11:49:36,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778954554] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:36,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700064286] [2023-08-30 11:49:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:36,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:36,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:36,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 11:49:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:36,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:49:36,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:49:36,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:49:36,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700064286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:36,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:36,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-08-30 11:49:36,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485213322] [2023-08-30 11:49:36,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:36,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:49:36,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:49:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:49:36,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 584 [2023-08-30 11:49:36,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 484 flow. Second operand has 13 states, 13 states have (on average 246.84615384615384) internal successors, (3209), 13 states have internal predecessors, (3209), 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 11:49:36,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:36,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 584 [2023-08-30 11:49:36,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:40,033 INFO L130 PetriNetUnfolder]: 28208/42429 cut-off events. [2023-08-30 11:49:40,033 INFO L131 PetriNetUnfolder]: For 31219/31219 co-relation queries the response was YES. [2023-08-30 11:49:40,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111700 conditions, 42429 events. 28208/42429 cut-off events. For 31219/31219 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 316198 event pairs, 5255 based on Foata normal form. 388/36700 useless extension candidates. Maximal degree in co-relation 111676. Up to 7895 conditions per place. [2023-08-30 11:49:40,395 INFO L137 encePairwiseOnDemand]: 570/584 looper letters, 267 selfloop transitions, 42 changer transitions 5/319 dead transitions. [2023-08-30 11:49:40,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 319 transitions, 2065 flow [2023-08-30 11:49:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 11:49:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 11:49:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4151 transitions. [2023-08-30 11:49:40,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442422945205479 [2023-08-30 11:49:40,404 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4151 transitions. [2023-08-30 11:49:40,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4151 transitions. [2023-08-30 11:49:40,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:40,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4151 transitions. [2023-08-30 11:49:40,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 259.4375) internal successors, (4151), 16 states have internal predecessors, (4151), 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 11:49:40,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 584.0) internal successors, (9928), 17 states have internal predecessors, (9928), 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 11:49:40,423 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 584.0) internal successors, (9928), 17 states have internal predecessors, (9928), 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 11:49:40,423 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 484 flow. Second operand 16 states and 4151 transitions. [2023-08-30 11:49:40,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 319 transitions, 2065 flow [2023-08-30 11:49:40,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 319 transitions, 2050 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:49:40,491 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 602 flow [2023-08-30 11:49:40,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=602, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2023-08-30 11:49:40,492 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2023-08-30 11:49:40,492 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 602 flow [2023-08-30 11:49:40,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 246.84615384615384) internal successors, (3209), 13 states have internal predecessors, (3209), 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 11:49:40,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:40,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:40,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 11:49:40,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:40,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1063018513, now seen corresponding path program 1 times [2023-08-30 11:49:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:40,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081380787] [2023-08-30 11:49:40,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:40,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 11:49:40,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081380787] [2023-08-30 11:49:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081380787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808359303] [2023-08-30 11:49:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:40,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:40,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:40,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 11:49:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:40,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:40,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 11:49:41,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:49:41,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808359303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:49:41,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:49:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-08-30 11:49:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276170057] [2023-08-30 11:49:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:49:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:49:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:49:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:49:41,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 584 [2023-08-30 11:49:41,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 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 11:49:41,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:41,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 584 [2023-08-30 11:49:41,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:43,089 INFO L130 PetriNetUnfolder]: 19894/32028 cut-off events. [2023-08-30 11:49:43,089 INFO L131 PetriNetUnfolder]: For 30829/31469 co-relation queries the response was YES. [2023-08-30 11:49:43,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88066 conditions, 32028 events. 19894/32028 cut-off events. For 30829/31469 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 248246 event pairs, 12834 based on Foata normal form. 640/29374 useless extension candidates. Maximal degree in co-relation 88039. Up to 22853 conditions per place. [2023-08-30 11:49:43,320 INFO L137 encePairwiseOnDemand]: 580/584 looper letters, 102 selfloop transitions, 5 changer transitions 4/118 dead transitions. [2023-08-30 11:49:43,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 940 flow [2023-08-30 11:49:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:49:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:49:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-08-30 11:49:43,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781678082191781 [2023-08-30 11:49:43,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-08-30 11:49:43,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-08-30 11:49:43,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:43,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-08-30 11:49:43,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 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 11:49:43,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:43,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 584.0) internal successors, (2920), 5 states have internal predecessors, (2920), 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 11:49:43,327 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 602 flow. Second operand 4 states and 1117 transitions. [2023-08-30 11:49:43,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 940 flow [2023-08-30 11:49:43,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 874 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 11:49:43,388 INFO L231 Difference]: Finished difference. Result has 89 places, 91 transitions, 541 flow [2023-08-30 11:49:43,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=541, PETRI_PLACES=89, PETRI_TRANSITIONS=91} [2023-08-30 11:49:43,389 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2023-08-30 11:49:43,389 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 91 transitions, 541 flow [2023-08-30 11:49:43,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 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 11:49:43,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:43,390 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:43,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:43,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 11:49:43,595 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:43,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1793209828, now seen corresponding path program 2 times [2023-08-30 11:49:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:43,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921535767] [2023-08-30 11:49:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:43,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:49:43,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921535767] [2023-08-30 11:49:43,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921535767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:43,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855910072] [2023-08-30 11:49:43,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:43,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:43,714 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:43,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 11:49:43,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:43,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:43,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 11:49:43,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-30 11:49:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855910072] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:43,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 11:49:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366848823] [2023-08-30 11:49:43,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 11:49:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 11:49:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-30 11:49:43,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 584 [2023-08-30 11:49:43,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 541 flow. Second operand has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 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 11:49:43,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:43,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 584 [2023-08-30 11:49:43,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:47,207 INFO L130 PetriNetUnfolder]: 27494/42118 cut-off events. [2023-08-30 11:49:47,208 INFO L131 PetriNetUnfolder]: For 58166/58999 co-relation queries the response was YES. [2023-08-30 11:49:47,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118840 conditions, 42118 events. 27494/42118 cut-off events. For 58166/58999 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 316605 event pairs, 2724 based on Foata normal form. 1897/39549 useless extension candidates. Maximal degree in co-relation 118813. Up to 6048 conditions per place. [2023-08-30 11:49:47,405 INFO L137 encePairwiseOnDemand]: 579/584 looper letters, 123 selfloop transitions, 9 changer transitions 98/235 dead transitions. [2023-08-30 11:49:47,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 235 transitions, 1635 flow [2023-08-30 11:49:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 11:49:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 11:49:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2531 transitions. [2023-08-30 11:49:47,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481544901065449 [2023-08-30 11:49:47,409 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2531 transitions. [2023-08-30 11:49:47,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2531 transitions. [2023-08-30 11:49:47,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:47,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2531 transitions. [2023-08-30 11:49:47,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.22222222222223) internal successors, (2531), 9 states have internal predecessors, (2531), 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 11:49:47,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 584.0) internal successors, (5840), 10 states have internal predecessors, (5840), 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 11:49:47,418 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 584.0) internal successors, (5840), 10 states have internal predecessors, (5840), 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 11:49:47,418 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 541 flow. Second operand 9 states and 2531 transitions. [2023-08-30 11:49:47,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 235 transitions, 1635 flow [2023-08-30 11:49:47,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 235 transitions, 1565 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 11:49:47,614 INFO L231 Difference]: Finished difference. Result has 88 places, 60 transitions, 334 flow [2023-08-30 11:49:47,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=334, PETRI_PLACES=88, PETRI_TRANSITIONS=60} [2023-08-30 11:49:47,614 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2023-08-30 11:49:47,614 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 60 transitions, 334 flow [2023-08-30 11:49:47,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 271.55555555555554) internal successors, (2444), 9 states have internal predecessors, (2444), 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 11:49:47,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:49:47,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:47,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 11:49:47,816 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-30 11:49:47,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:49:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1639180099, now seen corresponding path program 2 times [2023-08-30 11:49:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:49:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947518973] [2023-08-30 11:49:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:49:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:49:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:49:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:49:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:49:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947518973] [2023-08-30 11:49:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947518973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:49:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375697313] [2023-08-30 11:49:47,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:49:47,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:47,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:49:47,997 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:49:48,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 11:49:48,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:49:48,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:49:48,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:49:48,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:49:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-30 11:49:48,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:49:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-30 11:49:48,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375697313] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:49:48,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:49:48,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-08-30 11:49:48,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085985613] [2023-08-30 11:49:48,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:49:48,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 11:49:48,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:49:48,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 11:49:48,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 11:49:48,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 584 [2023-08-30 11:49:48,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 60 transitions, 334 flow. Second operand has 10 states, 10 states have (on average 247.3) internal successors, (2473), 10 states have internal predecessors, (2473), 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 11:49:48,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:49:48,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 584 [2023-08-30 11:49:48,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:49:50,823 INFO L130 PetriNetUnfolder]: 18965/28546 cut-off events. [2023-08-30 11:49:50,823 INFO L131 PetriNetUnfolder]: For 28937/29287 co-relation queries the response was YES. [2023-08-30 11:49:50,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83493 conditions, 28546 events. 18965/28546 cut-off events. For 28937/29287 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 189946 event pairs, 4886 based on Foata normal form. 350/28788 useless extension candidates. Maximal degree in co-relation 83469. Up to 8676 conditions per place. [2023-08-30 11:49:50,913 INFO L137 encePairwiseOnDemand]: 571/584 looper letters, 0 selfloop transitions, 0 changer transitions 194/194 dead transitions. [2023-08-30 11:49:50,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 194 transitions, 1339 flow [2023-08-30 11:49:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 11:49:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 11:49:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3546 transitions. [2023-08-30 11:49:50,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43370841487279843 [2023-08-30 11:49:50,919 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3546 transitions. [2023-08-30 11:49:50,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3546 transitions. [2023-08-30 11:49:50,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:49:50,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3546 transitions. [2023-08-30 11:49:50,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 253.28571428571428) internal successors, (3546), 14 states have internal predecessors, (3546), 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 11:49:50,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 584.0) internal successors, (8760), 15 states have internal predecessors, (8760), 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 11:49:50,929 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 584.0) internal successors, (8760), 15 states have internal predecessors, (8760), 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 11:49:50,929 INFO L175 Difference]: Start difference. First operand has 88 places, 60 transitions, 334 flow. Second operand 14 states and 3546 transitions. [2023-08-30 11:49:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 194 transitions, 1339 flow [2023-08-30 11:49:51,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 194 transitions, 1087 flow, removed 40 selfloop flow, removed 15 redundant places. [2023-08-30 11:49:51,198 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-30 11:49:51,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-30 11:49:51,199 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-30 11:49:51,199 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-30 11:49:51,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.3) internal successors, (2473), 10 states have internal predecessors, (2473), 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 11:49:51,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-08-30 11:49:51,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-30 11:49:51,201 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-30 11:49:51,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-30 11:49:51,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-30 11:49:51,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-30 11:49:51,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 11:49:51,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:49:51,405 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:49:51,408 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:49:51,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:49:51,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:49:51 BasicIcfg [2023-08-30 11:49:51,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:49:51,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:49:51,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:49:51,412 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:49:51,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:49:01" (3/4) ... [2023-08-30 11:49:51,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:49:51,420 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:49:51,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:49:51,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:49:51,426 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-08-30 11:49:51,426 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:49:51,427 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:49:51,427 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:49:51,465 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:49:51,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:49:51,466 INFO L158 Benchmark]: Toolchain (without parser) took 50575.61ms. Allocated memory was 71.3MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 49.0MB in the beginning and 7.4GB in the end (delta: -7.3GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-30 11:49:51,466 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:49:51,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.38ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 37.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:49:51,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.03ms. Allocated memory is still 71.3MB. Free memory was 37.1MB in the beginning and 34.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:49:51,467 INFO L158 Benchmark]: Boogie Preprocessor took 39.53ms. Allocated memory is still 71.3MB. Free memory was 34.9MB in the beginning and 50.7MB in the end (delta: -15.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-08-30 11:49:51,467 INFO L158 Benchmark]: RCFGBuilder took 629.62ms. Allocated memory is still 71.3MB. Free memory was 50.4MB in the beginning and 45.8MB in the end (delta: 4.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-08-30 11:49:51,467 INFO L158 Benchmark]: TraceAbstraction took 49607.17ms. Allocated memory was 71.3MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 45.2MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-08-30 11:49:51,468 INFO L158 Benchmark]: Witness Printer took 53.78ms. Allocated memory is still 9.0GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 11:49:51,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.38ms. Allocated memory is still 71.3MB. Free memory was 48.8MB in the beginning and 37.3MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.03ms. Allocated memory is still 71.3MB. Free memory was 37.1MB in the beginning and 34.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.53ms. Allocated memory is still 71.3MB. Free memory was 34.9MB in the beginning and 50.7MB in the end (delta: -15.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * RCFGBuilder took 629.62ms. Allocated memory is still 71.3MB. Free memory was 50.4MB in the beginning and 45.8MB in the end (delta: 4.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 49607.17ms. Allocated memory was 71.3MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 45.2MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Witness Printer took 53.78ms. Allocated memory is still 9.0GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 250 PlacesBefore, 51 PlacesAfterwards, 263 TransitionsBefore, 48 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 7 FixpointIterations, 173 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 40 TrivialYvCompositions, 6 ConcurrentYvCompositions, 16 ChoiceCompositions, 285 TotalNumberOfCompositions, 7233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3510, independent: 3309, independent conditional: 0, independent unconditional: 3309, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1705, independent: 1644, independent conditional: 0, independent unconditional: 1644, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3510, independent: 1665, independent conditional: 0, independent unconditional: 1665, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 1705, unknown conditional: 0, unknown unconditional: 1705] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 114, Positive conditional cache size: 0, Positive unconditional cache size: 114, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 329 locations, 23 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 49.5s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4674 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3778 mSDsluCounter, 1309 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1020 mSDsCounter, 400 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6721 IncrementalHoareTripleChecker+Invalid, 7121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 400 mSolverCounterUnsat, 289 mSDtfsCounter, 6721 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 327 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=602occurred in iteration=16, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 379 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2362 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 36 InterpolantComputations, 13 PerfectInterpolantSequences, 186/299 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:49:51,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE