./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:48:45,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:48:45,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:48:45,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:48:45,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:48:45,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:48:45,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:48:45,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:48:45,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:48:45,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:48:45,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:48:45,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:48:45,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:48:45,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:48:45,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:48:45,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:48:45,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:48:45,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:48:45,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:48:45,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:48:45,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:48:45,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:48:45,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:48:45,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:48:45,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:48:45,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:48:45,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:48:45,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:48:45,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:48:45,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:48:45,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:48:45,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:48:45,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:48:45,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:48:45,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:48:45,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:48:45,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:48:45,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:48:45,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:48:45,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:48:45,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:48:45,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:48:45,488 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:48:45,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:48:45,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:48:45,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:48:45,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:48:45,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:48:45,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:48:45,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:48:45,492 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:48:45,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:48:45,493 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:48:45,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:48:45,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:48:45,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:48:45,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:48:45,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:48:45,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:48:45,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:48:45,494 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:48:45,494 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:48:45,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:48:45,495 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:48:45,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:48:45,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:48:45,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:48:45,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:48:45,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:45,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:48:45,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:48:45,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:48:45,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:48:45,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:48:45,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:48:45,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:48:45,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:48:45,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:48:45,498 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:48:45,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:48:45,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:48:45,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:48:45,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:48:45,812 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:48:45,813 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:48:45,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-09-01 07:48:46,932 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:48:47,126 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:48:47,127 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-09-01 07:48:47,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ed289a0/6de675e7497e469c970f744a777c1453/FLAG91b39942f [2023-09-01 07:48:47,147 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ed289a0/6de675e7497e469c970f744a777c1453 [2023-09-01 07:48:47,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:48:47,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:48:47,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:47,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:48:47,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:48:47,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6ba5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47, skipping insertion in model container [2023-09-01 07:48:47,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:48:47,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:48:47,331 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/parallel-misc-3.wvr.c[2410,2423] [2023-09-01 07:48:47,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:47,344 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:48:47,380 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/parallel-misc-3.wvr.c[2410,2423] [2023-09-01 07:48:47,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:47,388 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:47,389 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:47,395 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:48:47,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47 WrapperNode [2023-09-01 07:48:47,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:47,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:47,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:48:47,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:48:47,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,437 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-09-01 07:48:47,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:47,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:48:47,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:48:47,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:48:47,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,477 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:48:47,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:48:47,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:48:47,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:48:47,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (1/1) ... [2023-09-01 07:48:47,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:47,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:47,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:48:47,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:48:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:48:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:48:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:48:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:48:47,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:48:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:48:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:48:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:48:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:48:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:48:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:48:47,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:48:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:48:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:48:47,601 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:48:47,707 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:48:47,709 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:48:48,003 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:48:48,048 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:48:48,049 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 07:48:48,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:48 BoogieIcfgContainer [2023-09-01 07:48:48,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:48:48,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:48:48,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:48:48,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:48:48,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:48:47" (1/3) ... [2023-09-01 07:48:48,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25030b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:48, skipping insertion in model container [2023-09-01 07:48:48,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:47" (2/3) ... [2023-09-01 07:48:48,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25030b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:48, skipping insertion in model container [2023-09-01 07:48:48,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:48" (3/3) ... [2023-09-01 07:48:48,058 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-09-01 07:48:48,065 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:48:48,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:48:48,073 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 07:48:48,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:48:48,181 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:48:48,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 212 flow [2023-09-01 07:48:48,289 INFO L130 PetriNetUnfolder]: 11/96 cut-off events. [2023-09-01 07:48:48,289 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:48:48,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 11/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-09-01 07:48:48,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 98 transitions, 212 flow [2023-09-01 07:48:48,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 80 transitions, 169 flow [2023-09-01 07:48:48,303 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:48:48,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 80 transitions, 169 flow [2023-09-01 07:48:48,321 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 80 transitions, 169 flow [2023-09-01 07:48:48,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 80 transitions, 169 flow [2023-09-01 07:48:48,337 INFO L130 PetriNetUnfolder]: 10/80 cut-off events. [2023-09-01 07:48:48,341 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:48:48,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 80 events. 10/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2023-09-01 07:48:48,345 INFO L119 LiptonReduction]: Number of co-enabled transitions 1628 [2023-09-01 07:48:51,482 INFO L134 LiptonReduction]: Checked pairs total: 1693 [2023-09-01 07:48:51,482 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-09-01 07:48:51,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:48:51,499 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;@e85da3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:48:51,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-09-01 07:48:51,502 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-09-01 07:48:51,503 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:48:51,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:51,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:48:51,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:51,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash 428166, now seen corresponding path program 1 times [2023-09-01 07:48:51,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:51,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810839462] [2023-09-01 07:48:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810839462] [2023-09-01 07:48:51,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810839462] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:51,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:51,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:48:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289750456] [2023-09-01 07:48:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:51,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:51,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 183 [2023-09-01 07:48:51,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:51,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:51,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 183 [2023-09-01 07:48:51,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:51,822 INFO L130 PetriNetUnfolder]: 153/266 cut-off events. [2023-09-01 07:48:51,822 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 07:48:51,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 266 events. 153/266 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1060 event pairs, 57 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 480. Up to 241 conditions per place. [2023-09-01 07:48:51,825 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-09-01 07:48:51,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 127 flow [2023-09-01 07:48:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-09-01 07:48:51,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2023-09-01 07:48:51,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-09-01 07:48:51,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-09-01 07:48:51,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:51,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-09-01 07:48:51,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:51,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:51,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:51,848 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 47 flow. Second operand 3 states and 267 transitions. [2023-09-01 07:48:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 127 flow [2023-09-01 07:48:51,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:48:51,851 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 75 flow [2023-09-01 07:48:51,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2023-09-01 07:48:51,855 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-09-01 07:48:51,856 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 75 flow [2023-09-01 07:48:51,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:51,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:51,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:48:51,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:48:51,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:51,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 13274597, now seen corresponding path program 1 times [2023-09-01 07:48:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:51,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237954323] [2023-09-01 07:48:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237954323] [2023-09-01 07:48:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237954323] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:51,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441268092] [2023-09-01 07:48:51,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:51,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:51,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:52,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:52,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:48:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:52,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:48:52,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:52,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:52,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441268092] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:52,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:52,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-09-01 07:48:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311669116] [2023-09-01 07:48:52,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:52,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:48:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:48:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:48:52,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 183 [2023-09-01 07:48:52,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 75 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:52,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:52,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 183 [2023-09-01 07:48:52,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:53,004 INFO L130 PetriNetUnfolder]: 336/571 cut-off events. [2023-09-01 07:48:53,005 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 07:48:53,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 571 events. 336/571 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2607 event pairs, 15 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 1160. Up to 329 conditions per place. [2023-09-01 07:48:53,012 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 67 selfloop transitions, 35 changer transitions 0/102 dead transitions. [2023-09-01 07:48:53,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 532 flow [2023-09-01 07:48:53,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:48:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:48:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 824 transitions. [2023-09-01 07:48:53,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45027322404371584 [2023-09-01 07:48:53,017 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 824 transitions. [2023-09-01 07:48:53,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 824 transitions. [2023-09-01 07:48:53,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:53,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 824 transitions. [2023-09-01 07:48:53,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 82.4) internal successors, (824), 10 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:53,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:53,025 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:53,025 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 75 flow. Second operand 10 states and 824 transitions. [2023-09-01 07:48:53,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 532 flow [2023-09-01 07:48:53,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 102 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:53,028 INFO L231 Difference]: Finished difference. Result has 38 places, 56 transitions, 391 flow [2023-09-01 07:48:53,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=391, PETRI_PLACES=38, PETRI_TRANSITIONS=56} [2023-09-01 07:48:53,029 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-09-01 07:48:53,029 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 56 transitions, 391 flow [2023-09-01 07:48:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:53,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:53,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:48:53,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:53,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:53,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:53,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash 13274595, now seen corresponding path program 1 times [2023-09-01 07:48:53,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:53,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895145319] [2023-09-01 07:48:53,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:53,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895145319] [2023-09-01 07:48:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895145319] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728406702] [2023-09-01 07:48:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:53,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:53,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:53,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:53,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:48:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:48:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:53,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:53,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728406702] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:53,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:53,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-09-01 07:48:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112937788] [2023-09-01 07:48:53,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:53,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:48:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:48:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:48:53,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 183 [2023-09-01 07:48:53,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 56 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:53,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:53,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 183 [2023-09-01 07:48:53,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:54,214 INFO L130 PetriNetUnfolder]: 391/674 cut-off events. [2023-09-01 07:48:54,215 INFO L131 PetriNetUnfolder]: For 980/980 co-relation queries the response was YES. [2023-09-01 07:48:54,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 674 events. 391/674 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3179 event pairs, 13 based on Foata normal form. 44/666 useless extension candidates. Maximal degree in co-relation 1978. Up to 373 conditions per place. [2023-09-01 07:48:54,221 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 65 selfloop transitions, 39 changer transitions 2/106 dead transitions. [2023-09-01 07:48:54,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 106 transitions, 865 flow [2023-09-01 07:48:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:48:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:48:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 644 transitions. [2023-09-01 07:48:54,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2023-09-01 07:48:54,224 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 644 transitions. [2023-09-01 07:48:54,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 644 transitions. [2023-09-01 07:48:54,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:54,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 644 transitions. [2023-09-01 07:48:54,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 80.5) internal successors, (644), 8 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:54,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:54,230 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:54,230 INFO L175 Difference]: Start difference. First operand has 38 places, 56 transitions, 391 flow. Second operand 8 states and 644 transitions. [2023-09-01 07:48:54,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 106 transitions, 865 flow [2023-09-01 07:48:54,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 106 transitions, 825 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-09-01 07:48:54,245 INFO L231 Difference]: Finished difference. Result has 47 places, 72 transitions, 696 flow [2023-09-01 07:48:54,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=696, PETRI_PLACES=47, PETRI_TRANSITIONS=72} [2023-09-01 07:48:54,246 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2023-09-01 07:48:54,248 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 72 transitions, 696 flow [2023-09-01 07:48:54,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:54,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:54,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:54,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 07:48:54,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-09-01 07:48:54,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:54,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash 316231217, now seen corresponding path program 1 times [2023-09-01 07:48:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:54,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611175970] [2023-09-01 07:48:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:54,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:54,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611175970] [2023-09-01 07:48:54,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611175970] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:54,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94676302] [2023-09-01 07:48:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:54,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:54,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:54,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:54,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:48:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:54,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 07:48:54,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:54,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:55,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94676302] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:55,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:48:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 8 [2023-09-01 07:48:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075409415] [2023-09-01 07:48:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-09-01 07:48:55,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 07:48:55,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 72 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:55,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:55,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 07:48:55,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:55,155 INFO L130 PetriNetUnfolder]: 350/603 cut-off events. [2023-09-01 07:48:55,156 INFO L131 PetriNetUnfolder]: For 2314/2314 co-relation queries the response was YES. [2023-09-01 07:48:55,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 603 events. 350/603 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2710 event pairs, 192 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 2113. Up to 603 conditions per place. [2023-09-01 07:48:55,161 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 63 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-09-01 07:48:55,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 742 flow [2023-09-01 07:48:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-09-01 07:48:55,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42805100182149364 [2023-09-01 07:48:55,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-09-01 07:48:55,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-09-01 07:48:55,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:55,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-09-01 07:48:55,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:55,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:55,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:55,166 INFO L175 Difference]: Start difference. First operand has 47 places, 72 transitions, 696 flow. Second operand 3 states and 235 transitions. [2023-09-01 07:48:55,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 742 flow [2023-09-01 07:48:55,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 64 transitions, 647 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-09-01 07:48:55,179 INFO L231 Difference]: Finished difference. Result has 43 places, 64 transitions, 521 flow [2023-09-01 07:48:55,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=521, PETRI_PLACES=43, PETRI_TRANSITIONS=64} [2023-09-01 07:48:55,181 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-09-01 07:48:55,181 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 64 transitions, 521 flow [2023-09-01 07:48:55,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:55,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:55,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:55,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:55,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:55,389 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:55,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash 327590229, now seen corresponding path program 1 times [2023-09-01 07:48:55,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:55,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415750469] [2023-09-01 07:48:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415750469] [2023-09-01 07:48:55,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415750469] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:55,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053555578] [2023-09-01 07:48:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:55,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:55,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:48:55,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:48:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:55,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:48:55,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:55,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:55,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053555578] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:55,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:55,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-09-01 07:48:55,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421073377] [2023-09-01 07:48:55,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:55,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 07:48:55,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 07:48:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-09-01 07:48:55,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 183 [2023-09-01 07:48:55,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 64 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:55,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:55,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 183 [2023-09-01 07:48:55,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:56,210 INFO L130 PetriNetUnfolder]: 427/764 cut-off events. [2023-09-01 07:48:56,211 INFO L131 PetriNetUnfolder]: For 2501/2501 co-relation queries the response was YES. [2023-09-01 07:48:56,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 764 events. 427/764 cut-off events. For 2501/2501 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3823 event pairs, 25 based on Foata normal form. 230/990 useless extension candidates. Maximal degree in co-relation 2759. Up to 253 conditions per place. [2023-09-01 07:48:56,216 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 57 selfloop transitions, 51 changer transitions 7/115 dead transitions. [2023-09-01 07:48:56,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 115 transitions, 980 flow [2023-09-01 07:48:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:48:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:48:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2023-09-01 07:48:56,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40012143290831814 [2023-09-01 07:48:56,219 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2023-09-01 07:48:56,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2023-09-01 07:48:56,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:56,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2023-09-01 07:48:56,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:56,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:56,225 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:56,225 INFO L175 Difference]: Start difference. First operand has 43 places, 64 transitions, 521 flow. Second operand 9 states and 659 transitions. [2023-09-01 07:48:56,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 115 transitions, 980 flow [2023-09-01 07:48:56,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 115 transitions, 960 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 07:48:56,238 INFO L231 Difference]: Finished difference. Result has 54 places, 82 transitions, 884 flow [2023-09-01 07:48:56,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=54, PETRI_TRANSITIONS=82} [2023-09-01 07:48:56,240 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-09-01 07:48:56,240 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 82 transitions, 884 flow [2023-09-01 07:48:56,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:56,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:56,241 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:56,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:48:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:56,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:56,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1213233591, now seen corresponding path program 1 times [2023-09-01 07:48:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231493926] [2023-09-01 07:48:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:56,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:56,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231493926] [2023-09-01 07:48:56,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231493926] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:56,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896258436] [2023-09-01 07:48:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:56,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:56,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:56,539 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) [2023-09-01 07:48:56,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:48:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:56,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:48:56,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:56,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:56,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896258436] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:56,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 07:48:56,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 4] total 8 [2023-09-01 07:48:56,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489404964] [2023-09-01 07:48:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:56,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-09-01 07:48:56,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2023-09-01 07:48:56,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 82 transitions, 884 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:56,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:56,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2023-09-01 07:48:56,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:57,007 INFO L130 PetriNetUnfolder]: 378/681 cut-off events. [2023-09-01 07:48:57,008 INFO L131 PetriNetUnfolder]: For 2700/2700 co-relation queries the response was YES. [2023-09-01 07:48:57,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 681 events. 378/681 cut-off events. For 2700/2700 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3315 event pairs, 238 based on Foata normal form. 36/717 useless extension candidates. Maximal degree in co-relation 2963. Up to 681 conditions per place. [2023-09-01 07:48:57,014 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 72 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-09-01 07:48:57,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 920 flow [2023-09-01 07:48:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-09-01 07:48:57,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371584699453552 [2023-09-01 07:48:57,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-09-01 07:48:57,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-09-01 07:48:57,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:57,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-09-01 07:48:57,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,019 INFO L175 Difference]: Start difference. First operand has 54 places, 82 transitions, 884 flow. Second operand 3 states and 240 transitions. [2023-09-01 07:48:57,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 920 flow [2023-09-01 07:48:57,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 884 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-09-01 07:48:57,029 INFO L231 Difference]: Finished difference. Result has 53 places, 73 transitions, 740 flow [2023-09-01 07:48:57,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=53, PETRI_TRANSITIONS=73} [2023-09-01 07:48:57,030 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2023-09-01 07:48:57,030 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 73 transitions, 740 flow [2023-09-01 07:48:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:57,031 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:57,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:57,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:57,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:57,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1567784935, now seen corresponding path program 1 times [2023-09-01 07:48:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711802236] [2023-09-01 07:48:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:57,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:57,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:57,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711802236] [2023-09-01 07:48:57,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711802236] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:48:57,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:48:57,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:48:57,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540139695] [2023-09-01 07:48:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:48:57,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:48:57,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:57,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:48:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:48:57,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 183 [2023-09-01 07:48:57,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 73 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:57,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 183 [2023-09-01 07:48:57,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:57,434 INFO L130 PetriNetUnfolder]: 348/631 cut-off events. [2023-09-01 07:48:57,435 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 07:48:57,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 631 events. 348/631 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3032 event pairs, 226 based on Foata normal form. 20/651 useless extension candidates. Maximal degree in co-relation 2611. Up to 631 conditions per place. [2023-09-01 07:48:57,439 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 65 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-09-01 07:48:57,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 788 flow [2023-09-01 07:48:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:48:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:48:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-09-01 07:48:57,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353369763205829 [2023-09-01 07:48:57,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-09-01 07:48:57,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-09-01 07:48:57,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:57,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-09-01 07:48:57,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,443 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,444 INFO L175 Difference]: Start difference. First operand has 53 places, 73 transitions, 740 flow. Second operand 3 states and 239 transitions. [2023-09-01 07:48:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 788 flow [2023-09-01 07:48:57,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 781 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:57,472 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 651 flow [2023-09-01 07:48:57,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=651, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2023-09-01 07:48:57,474 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2023-09-01 07:48:57,475 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 651 flow [2023-09-01 07:48:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:57,476 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:57,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:48:57,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:57,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:57,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1288306910, now seen corresponding path program 1 times [2023-09-01 07:48:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:57,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29075610] [2023-09-01 07:48:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:57,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:57,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:57,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29075610] [2023-09-01 07:48:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29075610] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268425951] [2023-09-01 07:48:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:57,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:57,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:57,659 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) [2023-09-01 07:48:57,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:48:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:57,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:48:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:57,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:48:57,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268425951] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:57,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:57,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 8 [2023-09-01 07:48:57,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545158173] [2023-09-01 07:48:57,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:57,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 07:48:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:57,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 07:48:57,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-09-01 07:48:57,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 183 [2023-09-01 07:48:57,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:57,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:57,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 183 [2023-09-01 07:48:57,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:48:58,217 INFO L130 PetriNetUnfolder]: 449/818 cut-off events. [2023-09-01 07:48:58,217 INFO L131 PetriNetUnfolder]: For 3585/3585 co-relation queries the response was YES. [2023-09-01 07:48:58,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3377 conditions, 818 events. 449/818 cut-off events. For 3585/3585 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4124 event pairs, 59 based on Foata normal form. 110/928 useless extension candidates. Maximal degree in co-relation 3355. Up to 278 conditions per place. [2023-09-01 07:48:58,223 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 56 selfloop transitions, 43 changer transitions 9/108 dead transitions. [2023-09-01 07:48:58,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 108 transitions, 1127 flow [2023-09-01 07:48:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:48:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:48:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 545 transitions. [2023-09-01 07:48:58,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722677595628415 [2023-09-01 07:48:58,226 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 545 transitions. [2023-09-01 07:48:58,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 545 transitions. [2023-09-01 07:48:58,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:48:58,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 545 transitions. [2023-09-01 07:48:58,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:58,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:58,232 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:58,232 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 651 flow. Second operand 8 states and 545 transitions. [2023-09-01 07:48:58,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 108 transitions, 1127 flow [2023-09-01 07:48:58,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 108 transitions, 1126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:48:58,243 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 1028 flow [2023-09-01 07:48:58,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1028, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-09-01 07:48:58,245 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-09-01 07:48:58,245 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 1028 flow [2023-09-01 07:48:58,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:58,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:48:58,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:48:58,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:48:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:58,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:48:58,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:48:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 316232141, now seen corresponding path program 2 times [2023-09-01 07:48:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:48:58,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939172340] [2023-09-01 07:48:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:48:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:48:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:48:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:48:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939172340] [2023-09-01 07:48:58,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939172340] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:48:58,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332591543] [2023-09-01 07:48:58,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:48:58,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:48:58,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:58,564 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) [2023-09-01 07:48:58,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:48:58,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:48:58,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:48:58,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:48:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:48:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:58,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:48:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:48:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332591543] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:48:59,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:48:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-09-01 07:48:59,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272132608] [2023-09-01 07:48:59,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:48:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 07:48:59,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:48:59,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 07:48:59,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-09-01 07:48:59,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 183 [2023-09-01 07:48:59,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 1028 flow. Second operand has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:48:59,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:48:59,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 183 [2023-09-01 07:48:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:00,029 INFO L130 PetriNetUnfolder]: 699/1200 cut-off events. [2023-09-01 07:49:00,029 INFO L131 PetriNetUnfolder]: For 8663/8663 co-relation queries the response was YES. [2023-09-01 07:49:00,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 1200 events. 699/1200 cut-off events. For 8663/8663 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6207 event pairs, 53 based on Foata normal form. 52/1252 useless extension candidates. Maximal degree in co-relation 6277. Up to 374 conditions per place. [2023-09-01 07:49:00,039 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 78 selfloop transitions, 119 changer transitions 13/210 dead transitions. [2023-09-01 07:49:00,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 210 transitions, 2880 flow [2023-09-01 07:49:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 07:49:00,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 07:49:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1014 transitions. [2023-09-01 07:49:00,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693989071038251 [2023-09-01 07:49:00,043 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1014 transitions. [2023-09-01 07:49:00,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1014 transitions. [2023-09-01 07:49:00,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:00,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1014 transitions. [2023-09-01 07:49:00,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.6) internal successors, (1014), 15 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,050 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,050 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 1028 flow. Second operand 15 states and 1014 transitions. [2023-09-01 07:49:00,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 210 transitions, 2880 flow [2023-09-01 07:49:00,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 210 transitions, 2836 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-09-01 07:49:00,078 INFO L231 Difference]: Finished difference. Result has 82 places, 162 transitions, 2653 flow [2023-09-01 07:49:00,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2653, PETRI_PLACES=82, PETRI_TRANSITIONS=162} [2023-09-01 07:49:00,079 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2023-09-01 07:49:00,079 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 162 transitions, 2653 flow [2023-09-01 07:49:00,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:00,080 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:00,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:00,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:00,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:00,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1044463734, now seen corresponding path program 1 times [2023-09-01 07:49:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347370877] [2023-09-01 07:49:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:49:00,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:00,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347370877] [2023-09-01 07:49:00,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347370877] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:00,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:00,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:49:00,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678497257] [2023-09-01 07:49:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:00,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:00,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:00,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:00,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 07:49:00,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 162 transitions, 2653 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:00,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 07:49:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:00,579 INFO L130 PetriNetUnfolder]: 613/1086 cut-off events. [2023-09-01 07:49:00,579 INFO L131 PetriNetUnfolder]: For 9839/9839 co-relation queries the response was YES. [2023-09-01 07:49:00,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6095 conditions, 1086 events. 613/1086 cut-off events. For 9839/9839 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5702 event pairs, 337 based on Foata normal form. 70/1156 useless extension candidates. Maximal degree in co-relation 6069. Up to 1086 conditions per place. [2023-09-01 07:49:00,588 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 127 selfloop transitions, 1 changer transitions 11/139 dead transitions. [2023-09-01 07:49:00,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 139 transitions, 2467 flow [2023-09-01 07:49:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-09-01 07:49:00,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225865209471767 [2023-09-01 07:49:00,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-09-01 07:49:00,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-09-01 07:49:00,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:00,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-09-01 07:49:00,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,593 INFO L175 Difference]: Start difference. First operand has 82 places, 162 transitions, 2653 flow. Second operand 3 states and 232 transitions. [2023-09-01 07:49:00,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 139 transitions, 2467 flow [2023-09-01 07:49:00,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 139 transitions, 2184 flow, removed 119 selfloop flow, removed 4 redundant places. [2023-09-01 07:49:00,628 INFO L231 Difference]: Finished difference. Result has 78 places, 128 transitions, 1740 flow [2023-09-01 07:49:00,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1740, PETRI_PLACES=78, PETRI_TRANSITIONS=128} [2023-09-01 07:49:00,629 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2023-09-01 07:49:00,629 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 128 transitions, 1740 flow [2023-09-01 07:49:00,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:00,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:00,630 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:00,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:49:00,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:00,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1356694143, now seen corresponding path program 2 times [2023-09-01 07:49:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317159166] [2023-09-01 07:49:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317159166] [2023-09-01 07:49:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317159166] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525413005] [2023-09-01 07:49:00,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:49:00,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:00,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:00,820 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) [2023-09-01 07:49:00,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:49:00,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:49:00,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:00,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:00,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:01,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525413005] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:01,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:01,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2023-09-01 07:49:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567940829] [2023-09-01 07:49:01,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:01,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:49:01,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:49:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:49:01,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 183 [2023-09-01 07:49:01,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 128 transitions, 1740 flow. Second operand has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:01,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:01,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 183 [2023-09-01 07:49:01,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:02,485 INFO L130 PetriNetUnfolder]: 843/1512 cut-off events. [2023-09-01 07:49:02,485 INFO L131 PetriNetUnfolder]: For 8959/8959 co-relation queries the response was YES. [2023-09-01 07:49:02,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7153 conditions, 1512 events. 843/1512 cut-off events. For 8959/8959 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8555 event pairs, 117 based on Foata normal form. 170/1682 useless extension candidates. Maximal degree in co-relation 7129. Up to 496 conditions per place. [2023-09-01 07:49:02,497 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 90 selfloop transitions, 130 changer transitions 34/254 dead transitions. [2023-09-01 07:49:02,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 254 transitions, 3385 flow [2023-09-01 07:49:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:49:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:49:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 857 transitions. [2023-09-01 07:49:02,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36023539302227825 [2023-09-01 07:49:02,500 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 857 transitions. [2023-09-01 07:49:02,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 857 transitions. [2023-09-01 07:49:02,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:02,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 857 transitions. [2023-09-01 07:49:02,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.92307692307692) internal successors, (857), 13 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) [2023-09-01 07:49:02,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:02,507 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:02,507 INFO L175 Difference]: Start difference. First operand has 78 places, 128 transitions, 1740 flow. Second operand 13 states and 857 transitions. [2023-09-01 07:49:02,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 254 transitions, 3385 flow [2023-09-01 07:49:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 254 transitions, 3354 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:02,539 INFO L231 Difference]: Finished difference. Result has 99 places, 183 transitions, 3067 flow [2023-09-01 07:49:02,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3067, PETRI_PLACES=99, PETRI_TRANSITIONS=183} [2023-09-01 07:49:02,540 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2023-09-01 07:49:02,540 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 183 transitions, 3067 flow [2023-09-01 07:49:02,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:02,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:02,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:02,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:02,749 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,SelfDestructingSolverStorable10 [2023-09-01 07:49:02,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:02,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1213234553, now seen corresponding path program 1 times [2023-09-01 07:49:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837761264] [2023-09-01 07:49:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:02,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837761264] [2023-09-01 07:49:02,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837761264] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:02,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583783133] [2023-09-01 07:49:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:02,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:02,895 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) [2023-09-01 07:49:02,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:49:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:02,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:02,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:03,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583783133] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:03,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-09-01 07:49:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485495008] [2023-09-01 07:49:03,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:03,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:49:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:03,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:49:03,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-09-01 07:49:03,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-09-01 07:49:03,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 183 transitions, 3067 flow. Second operand has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:03,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:03,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-09-01 07:49:03,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:04,656 INFO L130 PetriNetUnfolder]: 971/1750 cut-off events. [2023-09-01 07:49:04,657 INFO L131 PetriNetUnfolder]: For 14430/14430 co-relation queries the response was YES. [2023-09-01 07:49:04,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 1750 events. 971/1750 cut-off events. For 14430/14430 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10430 event pairs, 71 based on Foata normal form. 70/1820 useless extension candidates. Maximal degree in co-relation 10096. Up to 540 conditions per place. [2023-09-01 07:49:04,673 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 96 selfloop transitions, 152 changer transitions 73/321 dead transitions. [2023-09-01 07:49:04,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 321 transitions, 5188 flow [2023-09-01 07:49:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:49:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:49:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 810 transitions. [2023-09-01 07:49:04,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34047919293820933 [2023-09-01 07:49:04,677 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 810 transitions. [2023-09-01 07:49:04,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 810 transitions. [2023-09-01 07:49:04,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:04,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 810 transitions. [2023-09-01 07:49:04,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.30769230769231) internal successors, (810), 13 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:04,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:04,682 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:04,683 INFO L175 Difference]: Start difference. First operand has 99 places, 183 transitions, 3067 flow. Second operand 13 states and 810 transitions. [2023-09-01 07:49:04,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 321 transitions, 5188 flow [2023-09-01 07:49:04,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 321 transitions, 4841 flow, removed 86 selfloop flow, removed 7 redundant places. [2023-09-01 07:49:04,755 INFO L231 Difference]: Finished difference. Result has 111 places, 224 transitions, 4090 flow [2023-09-01 07:49:04,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4090, PETRI_PLACES=111, PETRI_TRANSITIONS=224} [2023-09-01 07:49:04,755 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-09-01 07:49:04,756 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 224 transitions, 4090 flow [2023-09-01 07:49:04,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:04,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:04,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-09-01 07:49:04,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:04,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:04,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:04,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1043540208, now seen corresponding path program 1 times [2023-09-01 07:49:04,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:04,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461824607] [2023-09-01 07:49:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:04,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461824607] [2023-09-01 07:49:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461824607] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743339794] [2023-09-01 07:49:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:05,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:05,149 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) [2023-09-01 07:49:05,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 07:49:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:05,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 07:49:05,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:05,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:06,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743339794] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:06,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:06,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 07:49:06,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758229562] [2023-09-01 07:49:06,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:06,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 07:49:06,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:06,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 07:49:06,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-09-01 07:49:06,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-09-01 07:49:06,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 224 transitions, 4090 flow. Second operand has 16 states, 16 states have (on average 56.625) internal successors, (906), 16 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:06,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-09-01 07:49:06,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:07,313 INFO L130 PetriNetUnfolder]: 1653/2862 cut-off events. [2023-09-01 07:49:07,313 INFO L131 PetriNetUnfolder]: For 26904/26904 co-relation queries the response was YES. [2023-09-01 07:49:07,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19359 conditions, 2862 events. 1653/2862 cut-off events. For 26904/26904 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17463 event pairs, 65 based on Foata normal form. 138/3000 useless extension candidates. Maximal degree in co-relation 19322. Up to 725 conditions per place. [2023-09-01 07:49:07,343 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 159 selfloop transitions, 316 changer transitions 108/583 dead transitions. [2023-09-01 07:49:07,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 583 transitions, 10886 flow [2023-09-01 07:49:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 07:49:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 07:49:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1538 transitions. [2023-09-01 07:49:07,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33617486338797814 [2023-09-01 07:49:07,349 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1538 transitions. [2023-09-01 07:49:07,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1538 transitions. [2023-09-01 07:49:07,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:07,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1538 transitions. [2023-09-01 07:49:07,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 61.52) internal successors, (1538), 25 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:07,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:07,360 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:07,360 INFO L175 Difference]: Start difference. First operand has 111 places, 224 transitions, 4090 flow. Second operand 25 states and 1538 transitions. [2023-09-01 07:49:07,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 583 transitions, 10886 flow [2023-09-01 07:49:07,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 583 transitions, 10154 flow, removed 337 selfloop flow, removed 6 redundant places. [2023-09-01 07:49:07,495 INFO L231 Difference]: Finished difference. Result has 141 places, 429 transitions, 8797 flow [2023-09-01 07:49:07,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8797, PETRI_PLACES=141, PETRI_TRANSITIONS=429} [2023-09-01 07:49:07,496 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 117 predicate places. [2023-09-01 07:49:07,496 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 429 transitions, 8797 flow [2023-09-01 07:49:07,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.625) internal successors, (906), 16 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:07,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:07,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:07,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:07,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 07:49:07,697 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:07,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1213263383, now seen corresponding path program 2 times [2023-09-01 07:49:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520823215] [2023-09-01 07:49:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:07,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:07,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:07,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520823215] [2023-09-01 07:49:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520823215] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181901494] [2023-09-01 07:49:07,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:49:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:07,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:07,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 07:49:07,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:49:07,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:07,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:07,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:08,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:08,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181901494] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:08,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:08,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-09-01 07:49:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92772892] [2023-09-01 07:49:08,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:49:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:49:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-09-01 07:49:08,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-09-01 07:49:08,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 429 transitions, 8797 flow. Second operand has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:08,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:08,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-09-01 07:49:08,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:09,692 INFO L130 PetriNetUnfolder]: 1402/2581 cut-off events. [2023-09-01 07:49:09,692 INFO L131 PetriNetUnfolder]: For 29934/29934 co-relation queries the response was YES. [2023-09-01 07:49:09,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20177 conditions, 2581 events. 1402/2581 cut-off events. For 29934/29934 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 16545 event pairs, 40 based on Foata normal form. 94/2675 useless extension candidates. Maximal degree in co-relation 20131. Up to 950 conditions per place. [2023-09-01 07:49:09,719 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 234 selfloop transitions, 289 changer transitions 57/580 dead transitions. [2023-09-01 07:49:09,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 580 transitions, 12470 flow [2023-09-01 07:49:09,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 07:49:09,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 07:49:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 919 transitions. [2023-09-01 07:49:09,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3347905282331512 [2023-09-01 07:49:09,725 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 919 transitions. [2023-09-01 07:49:09,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 919 transitions. [2023-09-01 07:49:09,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:09,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 919 transitions. [2023-09-01 07:49:09,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 61.266666666666666) internal successors, (919), 15 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,732 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,732 INFO L175 Difference]: Start difference. First operand has 141 places, 429 transitions, 8797 flow. Second operand 15 states and 919 transitions. [2023-09-01 07:49:09,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 580 transitions, 12470 flow [2023-09-01 07:49:09,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 580 transitions, 11606 flow, removed 250 selfloop flow, removed 11 redundant places. [2023-09-01 07:49:09,952 INFO L231 Difference]: Finished difference. Result has 148 places, 490 transitions, 10615 flow [2023-09-01 07:49:09,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7560, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10615, PETRI_PLACES=148, PETRI_TRANSITIONS=490} [2023-09-01 07:49:09,952 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 124 predicate places. [2023-09-01 07:49:09,953 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 490 transitions, 10615 flow [2023-09-01 07:49:09,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 56.714285714285715) internal successors, (794), 14 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:09,953 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:09,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:10,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 07:49:10,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:10,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1044433973, now seen corresponding path program 3 times [2023-09-01 07:49:10,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:10,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351987692] [2023-09-01 07:49:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351987692] [2023-09-01 07:49:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351987692] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801178148] [2023-09-01 07:49:10,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:49:10,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:10,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:10,432 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:10,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 07:49:10,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 07:49:10,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:10,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:10,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:10,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:11,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801178148] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:11,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-09-01 07:49:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22456438] [2023-09-01 07:49:11,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 07:49:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 07:49:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2023-09-01 07:49:11,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 183 [2023-09-01 07:49:11,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 490 transitions, 10615 flow. Second operand has 16 states, 16 states have (on average 60.6875) internal successors, (971), 16 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:11,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 183 [2023-09-01 07:49:11,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:12,592 INFO L130 PetriNetUnfolder]: 1431/2666 cut-off events. [2023-09-01 07:49:12,593 INFO L131 PetriNetUnfolder]: For 32120/32120 co-relation queries the response was YES. [2023-09-01 07:49:12,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23328 conditions, 2666 events. 1431/2666 cut-off events. For 32120/32120 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 17485 event pairs, 0 based on Foata normal form. 106/2772 useless extension candidates. Maximal degree in co-relation 23280. Up to 841 conditions per place. [2023-09-01 07:49:12,628 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 242 selfloop transitions, 448 changer transitions 42/732 dead transitions. [2023-09-01 07:49:12,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 732 transitions, 16851 flow [2023-09-01 07:49:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:49:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:49:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 849 transitions. [2023-09-01 07:49:12,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35687263556116017 [2023-09-01 07:49:12,631 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 849 transitions. [2023-09-01 07:49:12,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 849 transitions. [2023-09-01 07:49:12,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:12,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 849 transitions. [2023-09-01 07:49:12,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.3076923076923) internal successors, (849), 13 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,637 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,637 INFO L175 Difference]: Start difference. First operand has 148 places, 490 transitions, 10615 flow. Second operand 13 states and 849 transitions. [2023-09-01 07:49:12,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 732 transitions, 16851 flow [2023-09-01 07:49:12,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 732 transitions, 16448 flow, removed 126 selfloop flow, removed 8 redundant places. [2023-09-01 07:49:12,984 INFO L231 Difference]: Finished difference. Result has 161 places, 662 transitions, 16308 flow [2023-09-01 07:49:12,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=9998, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=16308, PETRI_PLACES=161, PETRI_TRANSITIONS=662} [2023-09-01 07:49:12,984 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 137 predicate places. [2023-09-01 07:49:12,984 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 662 transitions, 16308 flow [2023-09-01 07:49:12,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 60.6875) internal successors, (971), 16 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:12,985 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:12,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:13,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 07:49:13,186 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:13,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1981364216, now seen corresponding path program 4 times [2023-09-01 07:49:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566278461] [2023-09-01 07:49:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:13,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:13,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:13,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566278461] [2023-09-01 07:49:13,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566278461] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740042068] [2023-09-01 07:49:13,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 07:49:13,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:13,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:13,442 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:13,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 07:49:13,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 07:49:13,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:13,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 07:49:13,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:13,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:14,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740042068] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:14,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:14,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-09-01 07:49:14,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614647239] [2023-09-01 07:49:14,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:14,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 07:49:14,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 07:49:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-09-01 07:49:14,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 183 [2023-09-01 07:49:14,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 662 transitions, 16308 flow. Second operand has 16 states, 16 states have (on average 59.8125) internal successors, (957), 16 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:14,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:14,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 183 [2023-09-01 07:49:14,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:15,855 INFO L130 PetriNetUnfolder]: 2218/3799 cut-off events. [2023-09-01 07:49:15,855 INFO L131 PetriNetUnfolder]: For 61002/61002 co-relation queries the response was YES. [2023-09-01 07:49:15,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40360 conditions, 3799 events. 2218/3799 cut-off events. For 61002/61002 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 23622 event pairs, 2 based on Foata normal form. 100/3899 useless extension candidates. Maximal degree in co-relation 40306. Up to 1139 conditions per place. [2023-09-01 07:49:15,909 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 452 selfloop transitions, 688 changer transitions 39/1179 dead transitions. [2023-09-01 07:49:15,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1179 transitions, 31360 flow [2023-09-01 07:49:15,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 07:49:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 07:49:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 968 transitions. [2023-09-01 07:49:15,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35264116575591986 [2023-09-01 07:49:15,913 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 968 transitions. [2023-09-01 07:49:15,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 968 transitions. [2023-09-01 07:49:15,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:15,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 968 transitions. [2023-09-01 07:49:15,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 64.53333333333333) internal successors, (968), 15 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:15,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:15,920 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:15,920 INFO L175 Difference]: Start difference. First operand has 161 places, 662 transitions, 16308 flow. Second operand 15 states and 968 transitions. [2023-09-01 07:49:15,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1179 transitions, 31360 flow [2023-09-01 07:49:16,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 1179 transitions, 30003 flow, removed 533 selfloop flow, removed 5 redundant places. [2023-09-01 07:49:16,666 INFO L231 Difference]: Finished difference. Result has 181 places, 1030 transitions, 28509 flow [2023-09-01 07:49:16,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=15459, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=28509, PETRI_PLACES=181, PETRI_TRANSITIONS=1030} [2023-09-01 07:49:16,667 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 157 predicate places. [2023-09-01 07:49:16,667 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 1030 transitions, 28509 flow [2023-09-01 07:49:16,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.8125) internal successors, (957), 16 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:16,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:16,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2023-09-01 07:49:16,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:16,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 07:49:16,875 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:16,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1982316565, now seen corresponding path program 3 times [2023-09-01 07:49:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:16,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746644299] [2023-09-01 07:49:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:17,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746644299] [2023-09-01 07:49:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746644299] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8040610] [2023-09-01 07:49:17,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:49:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:17,159 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:17,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 07:49:17,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 07:49:17,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:17,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:17,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:17,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8040610] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:18,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:18,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 16 [2023-09-01 07:49:18,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819851343] [2023-09-01 07:49:18,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:18,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:49:18,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:49:18,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:49:18,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 183 [2023-09-01 07:49:18,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 1030 transitions, 28509 flow. Second operand has 17 states, 17 states have (on average 56.76470588235294) internal successors, (965), 17 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:18,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:18,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 183 [2023-09-01 07:49:18,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:21,681 INFO L130 PetriNetUnfolder]: 2757/4836 cut-off events. [2023-09-01 07:49:21,681 INFO L131 PetriNetUnfolder]: For 113288/113288 co-relation queries the response was YES. [2023-09-01 07:49:21,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53594 conditions, 4836 events. 2757/4836 cut-off events. For 113288/113288 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 32338 event pairs, 0 based on Foata normal form. 298/5134 useless extension candidates. Maximal degree in co-relation 53532. Up to 1423 conditions per place. [2023-09-01 07:49:21,743 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 336 selfloop transitions, 1042 changer transitions 71/1449 dead transitions. [2023-09-01 07:49:21,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1449 transitions, 41614 flow [2023-09-01 07:49:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-09-01 07:49:21,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-09-01 07:49:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1740 transitions. [2023-09-01 07:49:21,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32786885245901637 [2023-09-01 07:49:21,748 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1740 transitions. [2023-09-01 07:49:21,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1740 transitions. [2023-09-01 07:49:21,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:21,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1740 transitions. [2023-09-01 07:49:21,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 60.0) internal successors, (1740), 29 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:21,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:21,758 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:21,759 INFO L175 Difference]: Start difference. First operand has 181 places, 1030 transitions, 28509 flow. Second operand 29 states and 1740 transitions. [2023-09-01 07:49:21,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1449 transitions, 41614 flow [2023-09-01 07:49:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1449 transitions, 41096 flow, removed 213 selfloop flow, removed 4 redundant places. [2023-09-01 07:49:22,868 INFO L231 Difference]: Finished difference. Result has 217 places, 1324 transitions, 40876 flow [2023-09-01 07:49:22,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=25935, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=679, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=40876, PETRI_PLACES=217, PETRI_TRANSITIONS=1324} [2023-09-01 07:49:22,869 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 193 predicate places. [2023-09-01 07:49:22,869 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 1324 transitions, 40876 flow [2023-09-01 07:49:22,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.76470588235294) internal successors, (965), 17 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:22,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:22,871 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:49:22,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:23,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:23,080 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:23,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1293644849, now seen corresponding path program 2 times [2023-09-01 07:49:23,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:23,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034613934] [2023-09-01 07:49:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:23,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034613934] [2023-09-01 07:49:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034613934] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035759474] [2023-09-01 07:49:23,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:49:23,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:23,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:23,466 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:23,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 07:49:23,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:49:23,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:23,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 07:49:23,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:24,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035759474] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:24,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:24,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 16 [2023-09-01 07:49:24,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919278658] [2023-09-01 07:49:24,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:24,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:49:24,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:49:24,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:49:24,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 183 [2023-09-01 07:49:24,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1324 transitions, 40876 flow. Second operand has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:24,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:24,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 183 [2023-09-01 07:49:24,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:26,831 INFO L130 PetriNetUnfolder]: 2470/4183 cut-off events. [2023-09-01 07:49:26,832 INFO L131 PetriNetUnfolder]: For 117341/117341 co-relation queries the response was YES. [2023-09-01 07:49:26,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53960 conditions, 4183 events. 2470/4183 cut-off events. For 117341/117341 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 26095 event pairs, 0 based on Foata normal form. 308/4491 useless extension candidates. Maximal degree in co-relation 53888. Up to 1599 conditions per place. [2023-09-01 07:49:26,894 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 359 selfloop transitions, 1038 changer transitions 32/1429 dead transitions. [2023-09-01 07:49:26,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1429 transitions, 46033 flow [2023-09-01 07:49:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 07:49:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 07:49:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1152 transitions. [2023-09-01 07:49:26,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31475409836065577 [2023-09-01 07:49:26,898 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1152 transitions. [2023-09-01 07:49:26,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1152 transitions. [2023-09-01 07:49:26,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:26,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1152 transitions. [2023-09-01 07:49:26,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.6) internal successors, (1152), 20 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:26,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:26,904 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:26,904 INFO L175 Difference]: Start difference. First operand has 217 places, 1324 transitions, 40876 flow. Second operand 20 states and 1152 transitions. [2023-09-01 07:49:26,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1429 transitions, 46033 flow [2023-09-01 07:49:28,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 1429 transitions, 44111 flow, removed 863 selfloop flow, removed 11 redundant places. [2023-09-01 07:49:28,333 INFO L231 Difference]: Finished difference. Result has 232 places, 1344 transitions, 43790 flow [2023-09-01 07:49:28,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=36471, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=913, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=43790, PETRI_PLACES=232, PETRI_TRANSITIONS=1344} [2023-09-01 07:49:28,335 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 208 predicate places. [2023-09-01 07:49:28,335 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 1344 transitions, 43790 flow [2023-09-01 07:49:28,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:28,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:28,336 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-09-01 07:49:28,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:28,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 07:49:28,537 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:28,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1420579546, now seen corresponding path program 3 times [2023-09-01 07:49:28,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:28,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869626638] [2023-09-01 07:49:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:28,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:49:28,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869626638] [2023-09-01 07:49:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869626638] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896848876] [2023-09-01 07:49:28,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:49:28,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:28,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:28,797 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:28,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 07:49:28,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 07:49:28,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:28,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 07:49:28,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:29,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:49:30,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896848876] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:30,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:30,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 16 [2023-09-01 07:49:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326322634] [2023-09-01 07:49:30,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:30,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:49:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:49:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:49:30,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 183 [2023-09-01 07:49:30,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1344 transitions, 43790 flow. Second operand has 17 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:30,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:30,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 183 [2023-09-01 07:49:30,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:32,020 INFO L130 PetriNetUnfolder]: 2195/3696 cut-off events. [2023-09-01 07:49:32,020 INFO L131 PetriNetUnfolder]: For 115120/115120 co-relation queries the response was YES. [2023-09-01 07:49:32,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51421 conditions, 3696 events. 2195/3696 cut-off events. For 115120/115120 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22409 event pairs, 0 based on Foata normal form. 106/3802 useless extension candidates. Maximal degree in co-relation 51346. Up to 3490 conditions per place. [2023-09-01 07:49:32,066 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 1170 selfloop transitions, 93 changer transitions 16/1279 dead transitions. [2023-09-01 07:49:32,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1279 transitions, 44559 flow [2023-09-01 07:49:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:49:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:49:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 460 transitions. [2023-09-01 07:49:32,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31420765027322406 [2023-09-01 07:49:32,068 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 460 transitions. [2023-09-01 07:49:32,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 460 transitions. [2023-09-01 07:49:32,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:32,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 460 transitions. [2023-09-01 07:49:32,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:32,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:32,072 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:32,072 INFO L175 Difference]: Start difference. First operand has 232 places, 1344 transitions, 43790 flow. Second operand 8 states and 460 transitions. [2023-09-01 07:49:32,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1279 transitions, 44559 flow [2023-09-01 07:49:33,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1279 transitions, 41139 flow, removed 415 selfloop flow, removed 19 redundant places. [2023-09-01 07:49:33,477 INFO L231 Difference]: Finished difference. Result has 205 places, 1254 transitions, 38464 flow [2023-09-01 07:49:33,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=38531, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=38464, PETRI_PLACES=205, PETRI_TRANSITIONS=1254} [2023-09-01 07:49:33,478 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 181 predicate places. [2023-09-01 07:49:33,478 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 1254 transitions, 38464 flow [2023-09-01 07:49:33,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:33,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:33,478 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1] [2023-09-01 07:49:33,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:33,679 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-09-01 07:49:33,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1492492627, now seen corresponding path program 3 times [2023-09-01 07:49:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:33,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089001368] [2023-09-01 07:49:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089001368] [2023-09-01 07:49:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089001368] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:34,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597849116] [2023-09-01 07:49:34,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:49:34,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:34,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:34,152 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:34,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 07:49:34,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 07:49:34,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:34,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 07:49:34,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:49:34,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:49:35,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597849116] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:35,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:35,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 07:49:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514108587] [2023-09-01 07:49:35,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:35,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 07:49:35,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:35,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 07:49:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-09-01 07:49:35,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 183 [2023-09-01 07:49:35,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1254 transitions, 38464 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:35,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:35,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 183 [2023-09-01 07:49:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:37,152 INFO L130 PetriNetUnfolder]: 2056/3439 cut-off events. [2023-09-01 07:49:37,152 INFO L131 PetriNetUnfolder]: For 90581/90581 co-relation queries the response was YES. [2023-09-01 07:49:37,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45588 conditions, 3439 events. 2056/3439 cut-off events. For 90581/90581 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 20553 event pairs, 0 based on Foata normal form. 74/3513 useless extension candidates. Maximal degree in co-relation 45523. Up to 1676 conditions per place. [2023-09-01 07:49:37,181 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 0 selfloop transitions, 0 changer transitions 1229/1229 dead transitions. [2023-09-01 07:49:37,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1229 transitions, 40163 flow [2023-09-01 07:49:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:49:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:49:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 566 transitions. [2023-09-01 07:49:37,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3092896174863388 [2023-09-01 07:49:37,183 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 566 transitions. [2023-09-01 07:49:37,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 566 transitions. [2023-09-01 07:49:37,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:37,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 566 transitions. [2023-09-01 07:49:37,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.6) internal successors, (566), 10 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:37,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:37,186 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:37,186 INFO L175 Difference]: Start difference. First operand has 205 places, 1254 transitions, 38464 flow. Second operand 10 states and 566 transitions. [2023-09-01 07:49:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1229 transitions, 40163 flow [2023-09-01 07:49:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 1229 transitions, 38416 flow, removed 232 selfloop flow, removed 10 redundant places. [2023-09-01 07:49:38,349 INFO L231 Difference]: Finished difference. Result has 195 places, 0 transitions, 0 flow [2023-09-01 07:49:38,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=35490, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=195, PETRI_TRANSITIONS=0} [2023-09-01 07:49:38,350 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 171 predicate places. [2023-09-01 07:49:38,350 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 0 transitions, 0 flow [2023-09-01 07:49:38,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:38,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-09-01 07:49:38,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-09-01 07:49:38,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-09-01 07:49:38,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-09-01 07:49:38,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-09-01 07:49:38,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-09-01 07:49:38,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-09-01 07:49:38,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-09-01 07:49:38,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-09-01 07:49:38,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-09-01 07:49:38,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-09-01 07:49:38,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-09-01 07:49:38,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-09-01 07:49:38,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-09-01 07:49:38,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-09-01 07:49:38,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-09-01 07:49:38,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-09-01 07:49:38,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-09-01 07:49:38,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:38,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:38,564 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:38,568 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:49:38,568 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:49:38,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:49:38 BasicIcfg [2023-09-01 07:49:38,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:49:38,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:49:38,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:49:38,573 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:49:38,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:48" (3/4) ... [2023-09-01 07:49:38,576 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:49:38,580 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:49:38,580 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:49:38,584 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-09-01 07:49:38,584 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:49:38,584 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:49:38,584 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:49:38,619 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:49:38,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:49:38,619 INFO L158 Benchmark]: Toolchain (without parser) took 51468.51ms. Allocated memory was 71.3MB in the beginning and 1.8GB in the end (delta: 1.8GB). Free memory was 49.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 749.4MB. Max. memory is 16.1GB. [2023-09-01 07:49:38,620 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:49:38,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.27ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 38.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 07:49:38,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.22ms. Allocated memory is still 71.3MB. Free memory was 38.1MB in the beginning and 36.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:49:38,620 INFO L158 Benchmark]: Boogie Preprocessor took 45.65ms. Allocated memory is still 71.3MB. Free memory was 36.5MB in the beginning and 35.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:49:38,621 INFO L158 Benchmark]: RCFGBuilder took 565.38ms. Allocated memory is still 71.3MB. Free memory was 35.3MB in the beginning and 36.7MB in the end (delta: -1.4MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2023-09-01 07:49:38,622 INFO L158 Benchmark]: TraceAbstraction took 50519.87ms. Allocated memory was 71.3MB in the beginning and 1.8GB in the end (delta: 1.8GB). Free memory was 36.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-09-01 07:49:38,623 INFO L158 Benchmark]: Witness Printer took 46.03ms. Allocated memory is still 1.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:49:38,624 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.27ms. Allocated memory is still 71.3MB. Free memory was 49.1MB in the beginning and 38.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.22ms. Allocated memory is still 71.3MB. Free memory was 38.1MB in the beginning and 36.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.65ms. Allocated memory is still 71.3MB. Free memory was 36.5MB in the beginning and 35.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 565.38ms. Allocated memory is still 71.3MB. Free memory was 35.3MB in the beginning and 36.7MB in the end (delta: -1.4MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * TraceAbstraction took 50519.87ms. Allocated memory was 71.3MB in the beginning and 1.8GB in the end (delta: 1.8GB). Free memory was 36.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 46.03ms. Allocated memory is still 1.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 77 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 19 TransitionsAfterwards, 1628 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 85 TotalNumberOfCompositions, 1693 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1612, independent: 1606, independent conditional: 0, independent unconditional: 1606, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 779, independent: 774, independent conditional: 0, independent unconditional: 774, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1612, independent: 832, independent conditional: 0, independent unconditional: 832, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 779, unknown conditional: 0, unknown unconditional: 779] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 126 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 50.4s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2986 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2671 mSDsluCounter, 1040 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 850 mSDsCounter, 917 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5190 IncrementalHoareTripleChecker+Invalid, 6107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 917 mSolverCounterUnsat, 190 mSDtfsCounter, 5190 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 474 GetRequests, 160 SyntacticMatches, 5 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43790occurred in iteration=18, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 5166 SizeOfPredicates, 112 NumberOfNonLiveVariables, 1456 ConjunctsInSsa, 206 ConjunctsInUnsatCore, 54 InterpolantComputations, 5 PerfectInterpolantSequences, 67/241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:49:38,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE