./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.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 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:24:13,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:24:13,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:24:13,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:24:13,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:24:13,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:24:13,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:24:13,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:24:13,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:24:13,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:24:13,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:24:13,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:24:13,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:24:13,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:24:13,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:24:13,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:24:13,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:24:13,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:24:13,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:24:13,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:24:13,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:24:13,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:24:13,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:24:13,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:24:13,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:24:13,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:24:13,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:24:13,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:24:13,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:24:13,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:24:13,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:24:13,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:24:13,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:24:13,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:24:13,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:24:13,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:24:13,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:24:13,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:24:13,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:24:13,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:24:13,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:24:13,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:24:13,210 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:24:13,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:24:13,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:24:13,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:24:13,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:24:13,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:24:13,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:24:13,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:24:13,215 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:24:13,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:24:13,216 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:24:13,216 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:24:13,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:24:13,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:24:13,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:24:13,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:24:13,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:24:13,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:24:13,217 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:24:13,218 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:24:13,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:24:13,218 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:24:13,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:24:13,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:24:13,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:24:13,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:24:13,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:24:13,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:24:13,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:24:13,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:24:13,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:24:13,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:24:13,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:24:13,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:24:13,221 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:24:13,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:24:13,221 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:24:13,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:24:13,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:24:13,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:24:13,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:24:13,576 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:24:13,576 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:24:13,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2023-08-30 15:24:14,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:24:15,022 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:24:15,023 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2023-08-30 15:24:15,030 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b89a819c/aa9c57e5b3d24fc6808750e78677aedf/FLAGfdb6e29c6 [2023-08-30 15:24:15,050 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b89a819c/aa9c57e5b3d24fc6808750e78677aedf [2023-08-30 15:24:15,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:24:15,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:24:15,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:24:15,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:24:15,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:24:15,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ffb940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15, skipping insertion in model container [2023-08-30 15:24:15,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:24:15,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:24:15,268 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-counter-determinism.wvr.c[2476,2489] [2023-08-30 15:24:15,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:24:15,289 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:24:15,326 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-counter-determinism.wvr.c[2476,2489] [2023-08-30 15:24:15,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:24:15,337 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:24:15,338 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:24:15,344 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:24:15,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15 WrapperNode [2023-08-30 15:24:15,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:24:15,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:24:15,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:24:15,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:24:15,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,389 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 125 [2023-08-30 15:24:15,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:24:15,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:24:15,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:24:15,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:24:15,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,432 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:24:15,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:24:15,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:24:15,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:24:15,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (1/1) ... [2023-08-30 15:24:15,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:24:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:15,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:24:15,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:24:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:24:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:24:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:24:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:24:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:24:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:24:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:24:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:24:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:24:15,501 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:24:15,585 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:24:15,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:24:15,868 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:24:15,995 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:24:15,995 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:24:15,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:24:15 BoogieIcfgContainer [2023-08-30 15:24:15,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:24:15,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:24:16,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:24:16,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:24:16,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:24:15" (1/3) ... [2023-08-30 15:24:16,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e12574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:24:16, skipping insertion in model container [2023-08-30 15:24:16,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:24:15" (2/3) ... [2023-08-30 15:24:16,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e12574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:24:16, skipping insertion in model container [2023-08-30 15:24:16,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:24:15" (3/3) ... [2023-08-30 15:24:16,006 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2023-08-30 15:24:16,014 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:24:16,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:24:16,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 15:24:16,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:24:16,156 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:24:16,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 142 transitions, 316 flow [2023-08-30 15:24:16,290 INFO L130 PetriNetUnfolder]: 9/138 cut-off events. [2023-08-30 15:24:16,290 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:24:16,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 176 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-08-30 15:24:16,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 142 transitions, 316 flow [2023-08-30 15:24:16,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 118 transitions, 257 flow [2023-08-30 15:24:16,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:24:16,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 118 transitions, 257 flow [2023-08-30 15:24:16,344 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 118 transitions, 257 flow [2023-08-30 15:24:16,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 118 transitions, 257 flow [2023-08-30 15:24:16,382 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-08-30 15:24:16,383 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:24:16,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 118 events. 8/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-08-30 15:24:16,390 INFO L119 LiptonReduction]: Number of co-enabled transitions 5184 [2023-08-30 15:24:19,914 INFO L134 LiptonReduction]: Checked pairs total: 5612 [2023-08-30 15:24:19,914 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-30 15:24:19,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:24:19,932 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;@cc5874c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:24:19,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 15:24:19,936 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 15:24:19,936 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:24:19,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:19,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:24:19,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:19,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:19,942 INFO L85 PathProgramCache]: Analyzing trace with hash 18267824, now seen corresponding path program 1 times [2023-08-30 15:24:19,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:19,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241715475] [2023-08-30 15:24:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:20,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241715475] [2023-08-30 15:24:20,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241715475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:20,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:20,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:24:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731690257] [2023-08-30 15:24:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:20,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:20,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:24:20,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:20,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:20,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:24:20,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:22,424 INFO L130 PetriNetUnfolder]: 24827/29711 cut-off events. [2023-08-30 15:24:22,425 INFO L131 PetriNetUnfolder]: For 1094/1094 co-relation queries the response was YES. [2023-08-30 15:24:22,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60487 conditions, 29711 events. 24827/29711 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 1970. Compared 127131 event pairs, 3037 based on Foata normal form. 0/8363 useless extension candidates. Maximal degree in co-relation 55466. Up to 26813 conditions per place. [2023-08-30 15:24:22,619 INFO L137 encePairwiseOnDemand]: 229/241 looper letters, 62 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-30 15:24:22,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 311 flow [2023-08-30 15:24:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:24:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:24:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-08-30 15:24:22,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822959889349931 [2023-08-30 15:24:22,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-08-30 15:24:22,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-08-30 15:24:22,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:22,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-08-30 15:24:22,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:22,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:22,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:22,719 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 107 flow. Second operand 3 states and 421 transitions. [2023-08-30 15:24:22,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 311 flow [2023-08-30 15:24:22,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:24:22,789 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 126 flow [2023-08-30 15:24:22,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-08-30 15:24:22,811 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-08-30 15:24:22,812 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 126 flow [2023-08-30 15:24:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:22,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:22,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:24:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:24:22,813 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:22,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 18267894, now seen corresponding path program 1 times [2023-08-30 15:24:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:22,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169614417] [2023-08-30 15:24:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:22,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:23,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169614417] [2023-08-30 15:24:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169614417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:23,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:23,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:24:23,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450445909] [2023-08-30 15:24:23,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:23,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:23,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:23,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:23,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:23,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:24:23,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:23,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:23,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:24:23,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:25,241 INFO L130 PetriNetUnfolder]: 23267/28351 cut-off events. [2023-08-30 15:24:25,241 INFO L131 PetriNetUnfolder]: For 1805/1833 co-relation queries the response was YES. [2023-08-30 15:24:25,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65445 conditions, 28351 events. 23267/28351 cut-off events. For 1805/1833 co-relation queries the response was YES. Maximal size of possible extension queue 2014. Compared 132799 event pairs, 11077 based on Foata normal form. 0/10525 useless extension candidates. Maximal degree in co-relation 56505. Up to 24812 conditions per place. [2023-08-30 15:24:25,404 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 63 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 15:24:25,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 305 flow [2023-08-30 15:24:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:24:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:24:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-08-30 15:24:25,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656984785615491 [2023-08-30 15:24:25,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-08-30 15:24:25,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-08-30 15:24:25,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:25,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-08-30 15:24:25,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:25,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:25,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:25,412 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 126 flow. Second operand 3 states and 409 transitions. [2023-08-30 15:24:25,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 305 flow [2023-08-30 15:24:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:24:25,414 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 118 flow [2023-08-30 15:24:25,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 15:24:25,415 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-08-30 15:24:25,415 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 118 flow [2023-08-30 15:24:25,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:25,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:25,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:24:25,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:24:25,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:25,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:25,417 INFO L85 PathProgramCache]: Analyzing trace with hash 566305300, now seen corresponding path program 1 times [2023-08-30 15:24:25,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:25,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811455109] [2023-08-30 15:24:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811455109] [2023-08-30 15:24:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811455109] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:25,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575807969] [2023-08-30 15:24:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:25,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:25,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:24:25,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:24:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:25,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:24:25,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:25,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:24:25,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575807969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:25,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:24:25,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:24:25,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75420944] [2023-08-30 15:24:25,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:25,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:24:25,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:24:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:24:25,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:24:25,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:25,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:25,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:24:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:26,904 INFO L130 PetriNetUnfolder]: 22192/26674 cut-off events. [2023-08-30 15:24:26,905 INFO L131 PetriNetUnfolder]: For 1288/1288 co-relation queries the response was YES. [2023-08-30 15:24:26,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61559 conditions, 26674 events. 22192/26674 cut-off events. For 1288/1288 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 116737 event pairs, 3370 based on Foata normal form. 0/10005 useless extension candidates. Maximal degree in co-relation 52822. Up to 22650 conditions per place. [2023-08-30 15:24:27,081 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 81 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 15:24:27,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 86 transitions, 381 flow [2023-08-30 15:24:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:24:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:24:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 540 transitions. [2023-08-30 15:24:27,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601659751037344 [2023-08-30 15:24:27,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 540 transitions. [2023-08-30 15:24:27,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 540 transitions. [2023-08-30 15:24:27,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:27,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 540 transitions. [2023-08-30 15:24:27,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:27,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:27,089 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:27,089 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 118 flow. Second operand 4 states and 540 transitions. [2023-08-30 15:24:27,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 86 transitions, 381 flow [2023-08-30 15:24:27,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 86 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:24:27,093 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 114 flow [2023-08-30 15:24:27,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-30 15:24:27,095 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-08-30 15:24:27,095 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 114 flow [2023-08-30 15:24:27,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:27,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:27,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:24:27,104 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 15:24:27,301 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 15:24:27,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:27,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:27,302 INFO L85 PathProgramCache]: Analyzing trace with hash 566305299, now seen corresponding path program 1 times [2023-08-30 15:24:27,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54412598] [2023-08-30 15:24:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:27,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54412598] [2023-08-30 15:24:27,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54412598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002989144] [2023-08-30 15:24:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:27,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:24:27,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:24:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:27,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:24:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:27,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:24:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002989144] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:24:27,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:24:27,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:24:27,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95124105] [2023-08-30 15:24:27,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:24:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:24:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:24:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:24:27,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:24:27,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:27,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:27,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:24:27,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:31,244 INFO L130 PetriNetUnfolder]: 67466/80972 cut-off events. [2023-08-30 15:24:31,245 INFO L131 PetriNetUnfolder]: For 3016/3016 co-relation queries the response was YES. [2023-08-30 15:24:31,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187857 conditions, 80972 events. 67466/80972 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 4744. Compared 400593 event pairs, 9188 based on Foata normal form. 0/30125 useless extension candidates. Maximal degree in co-relation 45797. Up to 23893 conditions per place. [2023-08-30 15:24:31,605 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 158 selfloop transitions, 5 changer transitions 0/166 dead transitions. [2023-08-30 15:24:31,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 166 transitions, 760 flow [2023-08-30 15:24:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:24:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:24:31,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 850 transitions. [2023-08-30 15:24:31,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878284923928078 [2023-08-30 15:24:31,609 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 850 transitions. [2023-08-30 15:24:31,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 850 transitions. [2023-08-30 15:24:31,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:31,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 850 transitions. [2023-08-30 15:24:31,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.66666666666666) internal successors, (850), 6 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:31,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:31,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:31,615 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 114 flow. Second operand 6 states and 850 transitions. [2023-08-30 15:24:31,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 166 transitions, 760 flow [2023-08-30 15:24:31,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 166 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:24:31,619 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 147 flow [2023-08-30 15:24:31,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-08-30 15:24:31,620 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-30 15:24:31,620 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 147 flow [2023-08-30 15:24:31,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:31,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:31,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:24:31,627 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 15:24:31,826 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 15:24:31,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:31,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash 566305230, now seen corresponding path program 1 times [2023-08-30 15:24:31,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955279060] [2023-08-30 15:24:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955279060] [2023-08-30 15:24:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955279060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235503837] [2023-08-30 15:24:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:31,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:31,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:24:31,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:24:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:31,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:24:31,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:31,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:24:31,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235503837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:31,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:24:31,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:24:31,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604243767] [2023-08-30 15:24:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:31,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:24:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:31,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:24:31,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:24:31,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:24:31,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:31,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:31,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:24:31,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:36,843 INFO L130 PetriNetUnfolder]: 80673/97647 cut-off events. [2023-08-30 15:24:36,844 INFO L131 PetriNetUnfolder]: For 18608/18608 co-relation queries the response was YES. [2023-08-30 15:24:37,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232878 conditions, 97647 events. 80673/97647 cut-off events. For 18608/18608 co-relation queries the response was YES. Maximal size of possible extension queue 5747. Compared 503605 event pairs, 16780 based on Foata normal form. 0/42275 useless extension candidates. Maximal degree in co-relation 148700. Up to 53698 conditions per place. [2023-08-30 15:24:37,464 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 63 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2023-08-30 15:24:37,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 411 flow [2023-08-30 15:24:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:24:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:24:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 530 transitions. [2023-08-30 15:24:37,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549792531120332 [2023-08-30 15:24:37,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 530 transitions. [2023-08-30 15:24:37,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 530 transitions. [2023-08-30 15:24:37,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:37,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 530 transitions. [2023-08-30 15:24:37,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:37,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:37,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:37,472 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 147 flow. Second operand 4 states and 530 transitions. [2023-08-30 15:24:37,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 411 flow [2023-08-30 15:24:37,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:24:37,580 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 267 flow [2023-08-30 15:24:37,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-08-30 15:24:37,581 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-08-30 15:24:37,581 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 267 flow [2023-08-30 15:24:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:37,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:37,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:24:37,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:24:37,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:37,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:37,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 566305231, now seen corresponding path program 1 times [2023-08-30 15:24:37,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:37,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780938520] [2023-08-30 15:24:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:37,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:37,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780938520] [2023-08-30 15:24:37,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780938520] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:37,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93276291] [2023-08-30 15:24:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:37,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:37,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:24:37,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:24:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:37,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:24:37,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:37,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:24:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93276291] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:24:37,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:24:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:24:37,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289078163] [2023-08-30 15:24:37,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:24:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:24:37,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:24:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:24:37,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:24:37,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:37,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:37,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:24:37,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:45,752 INFO L130 PetriNetUnfolder]: 119155/145739 cut-off events. [2023-08-30 15:24:45,752 INFO L131 PetriNetUnfolder]: For 76667/76667 co-relation queries the response was YES. [2023-08-30 15:24:46,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391233 conditions, 145739 events. 119155/145739 cut-off events. For 76667/76667 co-relation queries the response was YES. Maximal size of possible extension queue 7619. Compared 817082 event pairs, 14619 based on Foata normal form. 12615/79130 useless extension candidates. Maximal degree in co-relation 164603. Up to 44008 conditions per place. [2023-08-30 15:24:46,487 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 151 selfloop transitions, 29 changer transitions 0/184 dead transitions. [2023-08-30 15:24:46,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 184 transitions, 1112 flow [2023-08-30 15:24:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:24:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:24:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-08-30 15:24:46,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5926694329183956 [2023-08-30 15:24:46,489 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-08-30 15:24:46,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-08-30 15:24:46,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:46,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-08-30 15:24:46,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:46,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:46,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:46,494 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 267 flow. Second operand 6 states and 857 transitions. [2023-08-30 15:24:46,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 184 transitions, 1112 flow [2023-08-30 15:24:46,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 184 transitions, 1055 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-30 15:24:46,719 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 581 flow [2023-08-30 15:24:46,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2023-08-30 15:24:46,720 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-30 15:24:46,720 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 581 flow [2023-08-30 15:24:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:24:46,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:24:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:46,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:46,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:46,926 INFO L85 PathProgramCache]: Analyzing trace with hash 172971721, now seen corresponding path program 1 times [2023-08-30 15:24:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867187735] [2023-08-30 15:24:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867187735] [2023-08-30 15:24:46,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867187735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:46,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:24:46,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:24:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547123680] [2023-08-30 15:24:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:46,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:24:46,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:24:46,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 581 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:46,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:46,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:24:46,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:24:55,704 INFO L130 PetriNetUnfolder]: 122035/149977 cut-off events. [2023-08-30 15:24:55,704 INFO L131 PetriNetUnfolder]: For 144507/144507 co-relation queries the response was YES. [2023-08-30 15:24:56,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425466 conditions, 149977 events. 122035/149977 cut-off events. For 144507/144507 co-relation queries the response was YES. Maximal size of possible extension queue 8004. Compared 846010 event pairs, 25803 based on Foata normal form. 0/70387 useless extension candidates. Maximal degree in co-relation 413772. Up to 127081 conditions per place. [2023-08-30 15:24:56,537 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 102 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-30 15:24:56,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 966 flow [2023-08-30 15:24:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:24:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:24:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-08-30 15:24:56,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656984785615491 [2023-08-30 15:24:56,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-08-30 15:24:56,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-08-30 15:24:56,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:24:56,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-08-30 15:24:56,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:56,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:56,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:56,541 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 581 flow. Second operand 3 states and 409 transitions. [2023-08-30 15:24:56,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 966 flow [2023-08-30 15:24:59,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 912 flow, removed 27 selfloop flow, removed 0 redundant places. [2023-08-30 15:24:59,152 INFO L231 Difference]: Finished difference. Result has 67 places, 77 transitions, 599 flow [2023-08-30 15:24:59,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=599, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2023-08-30 15:24:59,152 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-30 15:24:59,152 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 599 flow [2023-08-30 15:24:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:59,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:24:59,153 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:24:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:24:59,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:24:59,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:24:59,153 INFO L85 PathProgramCache]: Analyzing trace with hash 170235509, now seen corresponding path program 2 times [2023-08-30 15:24:59,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:24:59,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681863977] [2023-08-30 15:24:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:24:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:24:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:24:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:24:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:24:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681863977] [2023-08-30 15:24:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681863977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:24:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814870223] [2023-08-30 15:24:59,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:24:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:24:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:24:59,232 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 15:24:59,234 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 15:24:59,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:24:59,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:24:59,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:24:59,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:24:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:24:59,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:24:59,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814870223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:24:59,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:24:59,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 15:24:59,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243444176] [2023-08-30 15:24:59,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:24:59,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:24:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:24:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:24:59,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:24:59,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:24:59,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:24:59,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:24:59,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:24:59,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:03,374 INFO L130 PetriNetUnfolder]: 58098/72192 cut-off events. [2023-08-30 15:25:03,374 INFO L131 PetriNetUnfolder]: For 94660/95516 co-relation queries the response was YES. [2023-08-30 15:25:03,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199843 conditions, 72192 events. 58098/72192 cut-off events. For 94660/95516 co-relation queries the response was YES. Maximal size of possible extension queue 3857. Compared 397481 event pairs, 32121 based on Foata normal form. 1961/39311 useless extension candidates. Maximal degree in co-relation 194438. Up to 71989 conditions per place. [2023-08-30 15:25:03,820 INFO L137 encePairwiseOnDemand]: 236/241 looper letters, 59 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-30 15:25:03,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 590 flow [2023-08-30 15:25:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:25:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:25:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-08-30 15:25:03,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214384508990318 [2023-08-30 15:25:03,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-08-30 15:25:03,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-08-30 15:25:03,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:03,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-08-30 15:25:03,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:03,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:03,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:03,824 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 599 flow. Second operand 3 states and 377 transitions. [2023-08-30 15:25:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 590 flow [2023-08-30 15:25:04,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 568 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 15:25:04,172 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 450 flow [2023-08-30 15:25:04,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2023-08-30 15:25:04,173 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-30 15:25:04,173 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 450 flow [2023-08-30 15:25:04,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:04,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:04,173 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:25:04,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:25:04,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:04,378 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:25:04,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:04,379 INFO L85 PathProgramCache]: Analyzing trace with hash 170235441, now seen corresponding path program 2 times [2023-08-30 15:25:04,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:04,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985483655] [2023-08-30 15:25:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:04,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:04,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985483655] [2023-08-30 15:25:04,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985483655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:25:04,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710310662] [2023-08-30 15:25:04,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:25:04,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:04,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:25:04,640 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 15:25:04,664 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 15:25:04,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:25:04,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:25:04,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:25:04,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:25:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:04,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:25:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:04,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710310662] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:25:04,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:25:04,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:25:04,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720488305] [2023-08-30 15:25:04,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:25:04,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:25:04,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:25:04,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:25:04,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:25:04,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 450 flow. Second operand has 13 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:04,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:04,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:25:04,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:14,984 INFO L130 PetriNetUnfolder]: 141525/175283 cut-off events. [2023-08-30 15:25:14,985 INFO L131 PetriNetUnfolder]: For 228636/230790 co-relation queries the response was YES. [2023-08-30 15:25:15,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468587 conditions, 175283 events. 141525/175283 cut-off events. For 228636/230790 co-relation queries the response was YES. Maximal size of possible extension queue 7687. Compared 1020114 event pairs, 14542 based on Foata normal form. 12367/102284 useless extension candidates. Maximal degree in co-relation 468569. Up to 36193 conditions per place. [2023-08-30 15:25:16,148 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 281 selfloop transitions, 88 changer transitions 0/373 dead transitions. [2023-08-30 15:25:16,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 373 transitions, 2430 flow [2023-08-30 15:25:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:25:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:25:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1701 transitions. [2023-08-30 15:25:16,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881742738589212 [2023-08-30 15:25:16,152 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1701 transitions. [2023-08-30 15:25:16,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1701 transitions. [2023-08-30 15:25:16,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:16,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1701 transitions. [2023-08-30 15:25:16,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.75) internal successors, (1701), 12 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:16,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:16,162 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:16,162 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 450 flow. Second operand 12 states and 1701 transitions. [2023-08-30 15:25:16,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 373 transitions, 2430 flow [2023-08-30 15:25:16,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 373 transitions, 2429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:25:16,409 INFO L231 Difference]: Finished difference. Result has 81 places, 133 transitions, 1583 flow [2023-08-30 15:25:16,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1583, PETRI_PLACES=81, PETRI_TRANSITIONS=133} [2023-08-30 15:25:16,410 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2023-08-30 15:25:16,411 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 133 transitions, 1583 flow [2023-08-30 15:25:16,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:16,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:16,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:16,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 15:25:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:16,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:25:16,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash 626393308, now seen corresponding path program 1 times [2023-08-30 15:25:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:16,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467738781] [2023-08-30 15:25:16,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:16,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:16,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467738781] [2023-08-30 15:25:16,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467738781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:25:16,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:25:16,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:25:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339554950] [2023-08-30 15:25:16,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:25:16,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:25:16,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:25:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:25:16,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:25:16,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 133 transitions, 1583 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:16,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:16,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:25:16,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:27,009 INFO L130 PetriNetUnfolder]: 117405/151069 cut-off events. [2023-08-30 15:25:27,009 INFO L131 PetriNetUnfolder]: For 533954/536089 co-relation queries the response was YES. [2023-08-30 15:25:27,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484213 conditions, 151069 events. 117405/151069 cut-off events. For 533954/536089 co-relation queries the response was YES. Maximal size of possible extension queue 7085. Compared 931545 event pairs, 19083 based on Foata normal form. 2130/89708 useless extension candidates. Maximal degree in co-relation 484184. Up to 132691 conditions per place. [2023-08-30 15:25:28,388 INFO L137 encePairwiseOnDemand]: 233/241 looper letters, 242 selfloop transitions, 3 changer transitions 2/251 dead transitions. [2023-08-30 15:25:28,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 251 transitions, 3613 flow [2023-08-30 15:25:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:25:28,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:25:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-30 15:25:28,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546334716459198 [2023-08-30 15:25:28,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-30 15:25:28,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-30 15:25:28,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:28,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-30 15:25:28,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:28,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:28,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:28,393 INFO L175 Difference]: Start difference. First operand has 81 places, 133 transitions, 1583 flow. Second operand 3 states and 401 transitions. [2023-08-30 15:25:28,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 251 transitions, 3613 flow [2023-08-30 15:25:30,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 251 transitions, 3233 flow, removed 190 selfloop flow, removed 0 redundant places. [2023-08-30 15:25:30,040 INFO L231 Difference]: Finished difference. Result has 84 places, 135 transitions, 1420 flow [2023-08-30 15:25:30,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1420, PETRI_PLACES=84, PETRI_TRANSITIONS=135} [2023-08-30 15:25:30,041 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2023-08-30 15:25:30,041 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 135 transitions, 1420 flow [2023-08-30 15:25:30,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:30,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:30,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:25:30,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:25:30,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2056641016, now seen corresponding path program 1 times [2023-08-30 15:25:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:30,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679967584] [2023-08-30 15:25:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679967584] [2023-08-30 15:25:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679967584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:25:30,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:25:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:25:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166069801] [2023-08-30 15:25:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:25:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:25:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:25:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:25:30,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:25:30,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 135 transitions, 1420 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:30,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:30,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:25:30,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:39,700 INFO L130 PetriNetUnfolder]: 101881/132585 cut-off events. [2023-08-30 15:25:39,700 INFO L131 PetriNetUnfolder]: For 415588/417537 co-relation queries the response was YES. [2023-08-30 15:25:40,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453462 conditions, 132585 events. 101881/132585 cut-off events. For 415588/417537 co-relation queries the response was YES. Maximal size of possible extension queue 5936. Compared 839720 event pairs, 13189 based on Foata normal form. 1944/101374 useless extension candidates. Maximal degree in co-relation 453430. Up to 123916 conditions per place. [2023-08-30 15:25:40,790 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 242 selfloop transitions, 1 changer transitions 0/246 dead transitions. [2023-08-30 15:25:40,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 246 transitions, 3232 flow [2023-08-30 15:25:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:25:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:25:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-30 15:25:40,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380359612724758 [2023-08-30 15:25:40,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-30 15:25:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-30 15:25:40,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:40,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-30 15:25:40,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:40,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:40,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:40,795 INFO L175 Difference]: Start difference. First operand has 84 places, 135 transitions, 1420 flow. Second operand 3 states and 389 transitions. [2023-08-30 15:25:40,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 246 transitions, 3232 flow [2023-08-30 15:25:41,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 246 transitions, 3210 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-30 15:25:41,419 INFO L231 Difference]: Finished difference. Result has 84 places, 133 transitions, 1401 flow [2023-08-30 15:25:41,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1401, PETRI_PLACES=84, PETRI_TRANSITIONS=133} [2023-08-30 15:25:41,420 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2023-08-30 15:25:41,420 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 133 transitions, 1401 flow [2023-08-30 15:25:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:41,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:41,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:41,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:25:41,420 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:25:41,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:41,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2056641089, now seen corresponding path program 1 times [2023-08-30 15:25:41,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:41,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432611192] [2023-08-30 15:25:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:41,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432611192] [2023-08-30 15:25:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432611192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:25:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942389720] [2023-08-30 15:25:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:41,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:25:41,461 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 15:25:41,488 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 15:25:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:41,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:25:41,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:25:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:41,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:25:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942389720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:25:41,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:25:41,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:25:41,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700668663] [2023-08-30 15:25:41,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:25:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:25:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:41,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:25:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:25:41,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:25:41,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 133 transitions, 1401 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:41,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:41,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:25:41,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:25:51,854 INFO L130 PetriNetUnfolder]: 105919/137757 cut-off events. [2023-08-30 15:25:51,854 INFO L131 PetriNetUnfolder]: For 361996/363985 co-relation queries the response was YES. [2023-08-30 15:25:52,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464334 conditions, 137757 events. 105919/137757 cut-off events. For 361996/363985 co-relation queries the response was YES. Maximal size of possible extension queue 5604. Compared 874736 event pairs, 28459 based on Foata normal form. 1984/106782 useless extension candidates. Maximal degree in co-relation 464302. Up to 76428 conditions per place. [2023-08-30 15:25:52,990 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 242 selfloop transitions, 7 changer transitions 0/253 dead transitions. [2023-08-30 15:25:52,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 253 transitions, 3247 flow [2023-08-30 15:25:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:25:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:25:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions. [2023-08-30 15:25:52,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533195020746888 [2023-08-30 15:25:52,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 514 transitions. [2023-08-30 15:25:52,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 514 transitions. [2023-08-30 15:25:52,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:25:52,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 514 transitions. [2023-08-30 15:25:52,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:52,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:52,995 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:52,995 INFO L175 Difference]: Start difference. First operand has 84 places, 133 transitions, 1401 flow. Second operand 4 states and 514 transitions. [2023-08-30 15:25:52,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 253 transitions, 3247 flow [2023-08-30 15:25:55,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 253 transitions, 3246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:25:55,034 INFO L231 Difference]: Finished difference. Result has 87 places, 137 transitions, 1453 flow [2023-08-30 15:25:55,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1453, PETRI_PLACES=87, PETRI_TRANSITIONS=137} [2023-08-30 15:25:55,034 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2023-08-30 15:25:55,035 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 137 transitions, 1453 flow [2023-08-30 15:25:55,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:25:55,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:25:55,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:25:55,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:25:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:55,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:25:55,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:25:55,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2056641088, now seen corresponding path program 1 times [2023-08-30 15:25:55,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:25:55,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843740492] [2023-08-30 15:25:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:25:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:55,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:25:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843740492] [2023-08-30 15:25:55,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843740492] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:25:55,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648750505] [2023-08-30 15:25:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:25:55,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:25:55,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:25:55,272 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 15:25:55,287 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 15:25:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:25:55,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:25:55,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:25:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:55,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:25:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:25:55,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648750505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:25:55,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:25:55,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:25:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940971721] [2023-08-30 15:25:55,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:25:55,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:25:55,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:25:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:25:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:25:55,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:25:55,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 137 transitions, 1453 flow. Second operand has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 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 15:25:55,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:25:55,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:25:55,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:26:23,599 INFO L130 PetriNetUnfolder]: 235691/307825 cut-off events. [2023-08-30 15:26:23,599 INFO L131 PetriNetUnfolder]: For 1049653/1054126 co-relation queries the response was YES. [2023-08-30 15:26:25,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176821 conditions, 307825 events. 235691/307825 cut-off events. For 1049653/1054126 co-relation queries the response was YES. Maximal size of possible extension queue 11246. Compared 2097413 event pairs, 29803 based on Foata normal form. 22864/284376 useless extension candidates. Maximal degree in co-relation 1176786. Up to 121319 conditions per place. [2023-08-30 15:26:26,491 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 599 selfloop transitions, 11 changer transitions 0/614 dead transitions. [2023-08-30 15:26:26,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 614 transitions, 8095 flow [2023-08-30 15:26:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:26:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:26:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 811 transitions. [2023-08-30 15:26:26,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608575380359613 [2023-08-30 15:26:26,493 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 811 transitions. [2023-08-30 15:26:26,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 811 transitions. [2023-08-30 15:26:26,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:26:26,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 811 transitions. [2023-08-30 15:26:26,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:26,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:26,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:26,498 INFO L175 Difference]: Start difference. First operand has 87 places, 137 transitions, 1453 flow. Second operand 6 states and 811 transitions. [2023-08-30 15:26:26,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 614 transitions, 8095 flow [2023-08-30 15:26:30,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 614 transitions, 8066 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-30 15:26:30,255 INFO L231 Difference]: Finished difference. Result has 95 places, 146 transitions, 1572 flow [2023-08-30 15:26:30,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1572, PETRI_PLACES=95, PETRI_TRANSITIONS=146} [2023-08-30 15:26:30,256 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2023-08-30 15:26:30,256 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 146 transitions, 1572 flow [2023-08-30 15:26:30,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 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 15:26:30,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:26:30,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:26:30,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 15:26:30,457 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,SelfDestructingSolverStorable12 [2023-08-30 15:26:30,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:26:30,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:26:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash 472409182, now seen corresponding path program 1 times [2023-08-30 15:26:30,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:26:30,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596186747] [2023-08-30 15:26:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:26:30,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:26:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:26:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:26:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:26:30,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596186747] [2023-08-30 15:26:30,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596186747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:26:30,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:26:30,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:26:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198753438] [2023-08-30 15:26:30,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:26:30,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:26:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:26:30,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:26:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:26:30,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:26:30,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 146 transitions, 1572 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:30,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:26:30,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:26:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:26:53,256 INFO L130 PetriNetUnfolder]: 199041/260565 cut-off events. [2023-08-30 15:26:53,256 INFO L131 PetriNetUnfolder]: For 1061078/1061078 co-relation queries the response was YES. [2023-08-30 15:26:54,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054969 conditions, 260565 events. 199041/260565 cut-off events. For 1061078/1061078 co-relation queries the response was YES. Maximal size of possible extension queue 8582. Compared 1725995 event pairs, 84865 based on Foata normal form. 0/240575 useless extension candidates. Maximal degree in co-relation 1054929. Up to 243352 conditions per place. [2023-08-30 15:26:56,088 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 162 selfloop transitions, 1 changer transitions 0/166 dead transitions. [2023-08-30 15:26:56,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 166 transitions, 1993 flow [2023-08-30 15:26:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:26:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:26:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-30 15:26:56,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380359612724758 [2023-08-30 15:26:56,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-30 15:26:56,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-30 15:26:56,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:26:56,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-30 15:26:56,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:56,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:56,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:26:56,093 INFO L175 Difference]: Start difference. First operand has 95 places, 146 transitions, 1572 flow. Second operand 3 states and 389 transitions. [2023-08-30 15:26:56,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 166 transitions, 1993 flow [2023-08-30 15:27:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1985 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 15:27:10,050 INFO L231 Difference]: Finished difference. Result has 96 places, 124 transitions, 1314 flow [2023-08-30 15:27:10,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1314, PETRI_PLACES=96, PETRI_TRANSITIONS=124} [2023-08-30 15:27:10,051 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2023-08-30 15:27:10,051 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 124 transitions, 1314 flow [2023-08-30 15:27:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:27:10,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:27:10,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:27:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:27:10,052 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:27:10,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:27:10,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1683871860, now seen corresponding path program 1 times [2023-08-30 15:27:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:27:10,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861070432] [2023-08-30 15:27:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:27:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:27:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:27:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:27:10,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:27:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861070432] [2023-08-30 15:27:10,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861070432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:27:10,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:27:10,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:27:10,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511321282] [2023-08-30 15:27:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:27:10,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:27:10,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:27:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:27:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:27:10,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 241 [2023-08-30 15:27:10,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 124 transitions, 1314 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:27:10,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:27:10,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 241 [2023-08-30 15:27:10,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:27:36,382 INFO L130 PetriNetUnfolder]: 219969/295043 cut-off events. [2023-08-30 15:27:36,382 INFO L131 PetriNetUnfolder]: For 1357651/1363550 co-relation queries the response was YES. [2023-08-30 15:27:38,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144141 conditions, 295043 events. 219969/295043 cut-off events. For 1357651/1363550 co-relation queries the response was YES. Maximal size of possible extension queue 8524. Compared 2106152 event pairs, 111341 based on Foata normal form. 5894/289678 useless extension candidates. Maximal degree in co-relation 1144100. Up to 215383 conditions per place. [2023-08-30 15:27:39,833 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 219 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2023-08-30 15:27:39,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 226 transitions, 2917 flow [2023-08-30 15:27:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:27:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:27:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 15:27:39,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408022130013831 [2023-08-30 15:27:39,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 15:27:39,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 15:27:39,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:27:39,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 15:27:39,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:27:39,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:27:39,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:27:39,837 INFO L175 Difference]: Start difference. First operand has 96 places, 124 transitions, 1314 flow. Second operand 3 states and 391 transitions. [2023-08-30 15:27:39,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 226 transitions, 2917 flow [2023-08-30 15:28:02,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 226 transitions, 2916 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:28:02,274 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1367 flow [2023-08-30 15:28:02,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1367, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2023-08-30 15:28:02,275 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2023-08-30 15:28:02,275 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1367 flow [2023-08-30 15:28:02,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:28:02,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:28:02,276 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:28:02,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 15:28:02,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:28:02,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:28:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1683381859, now seen corresponding path program 2 times [2023-08-30 15:28:02,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:28:02,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701647723] [2023-08-30 15:28:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:28:02,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:28:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:28:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:28:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:28:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701647723] [2023-08-30 15:28:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701647723] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:28:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621977130] [2023-08-30 15:28:02,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:28:02,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:28:02,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:28:02,337 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 15:28:02,362 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 15:28:02,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:28:02,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:28:02,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:28:02,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:28:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:28:02,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:28:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:28:02,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621977130] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:28:02,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:28:02,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:28:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131005568] [2023-08-30 15:28:02,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:28:02,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:28:02,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:28:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:28:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:28:02,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:28:02,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1367 flow. Second operand has 13 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:28:02,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:28:02,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:28:02,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:29:18,631 INFO L130 PetriNetUnfolder]: 561247/754029 cut-off events. [2023-08-30 15:29:18,631 INFO L131 PetriNetUnfolder]: For 4319189/4351126 co-relation queries the response was YES. [2023-08-30 15:29:24,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990486 conditions, 754029 events. 561247/754029 cut-off events. For 4319189/4351126 co-relation queries the response was YES. Maximal size of possible extension queue 21091. Compared 5869610 event pairs, 50689 based on Foata normal form. 122600/834658 useless extension candidates. Maximal degree in co-relation 2990444. Up to 107656 conditions per place. [2023-08-30 15:29:26,931 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 1055 selfloop transitions, 72 changer transitions 0/1131 dead transitions. [2023-08-30 15:29:26,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 1131 transitions, 15016 flow [2023-08-30 15:29:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:29:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:29:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1628 transitions. [2023-08-30 15:29:26,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629322268326418 [2023-08-30 15:29:26,935 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1628 transitions. [2023-08-30 15:29:26,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1628 transitions. [2023-08-30 15:29:26,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:29:26,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1628 transitions. [2023-08-30 15:29:26,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.66666666666666) internal successors, (1628), 12 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:29:26,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:29:26,943 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:29:26,944 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1367 flow. Second operand 12 states and 1628 transitions. [2023-08-30 15:29:26,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 1131 transitions, 15016 flow [2023-08-30 15:29:51,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 1131 transitions, 15005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:29:51,582 INFO L231 Difference]: Finished difference. Result has 118 places, 191 transitions, 2369 flow [2023-08-30 15:29:51,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2369, PETRI_PLACES=118, PETRI_TRANSITIONS=191} [2023-08-30 15:29:51,583 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2023-08-30 15:29:51,583 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 191 transitions, 2369 flow [2023-08-30 15:29:51,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 117.23076923076923) internal successors, (1524), 13 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:29:51,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:29:51,584 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-30 15:29:51,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 15:29:51,784 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,SelfDestructingSolverStorable15 [2023-08-30 15:29:51,785 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:29:51,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:29:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1820938609, now seen corresponding path program 3 times [2023-08-30 15:29:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:29:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51545799] [2023-08-30 15:29:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:29:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:29:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:29:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:29:51,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:29:51,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51545799] [2023-08-30 15:29:51,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51545799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:29:51,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320513298] [2023-08-30 15:29:51,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 15:29:51,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:29:51,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:29:51,917 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 15:29:51,921 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 15:29:52,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 15:29:52,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:29:52,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:29:52,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:29:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:29:52,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:29:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:29:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320513298] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:29:52,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:29:52,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-30 15:29:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760806204] [2023-08-30 15:29:52,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:29:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 15:29:52,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:29:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 15:29:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 15:29:52,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 241 [2023-08-30 15:29:52,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 191 transitions, 2369 flow. Second operand has 25 states, 25 states have (on average 116.16) internal successors, (2904), 25 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:29:52,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:29:52,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 241 [2023-08-30 15:29:52,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand