./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:07:54,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:07:54,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:07:54,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:07:54,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:07:54,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:07:54,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:07:54,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:07:54,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:07:54,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:07:54,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:07:54,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:07:54,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:07:54,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:07:54,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:07:54,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:07:54,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:07:54,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:07:54,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:07:54,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:07:54,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:07:54,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:07:54,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:07:54,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:07:54,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:07:54,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:07:54,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:07:54,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:07:54,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:07:54,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:07:54,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:07:54,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:07:54,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:07:54,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:07:54,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:07:54,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:07:54,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:07:54,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:07:54,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:07:54,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:07:54,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:07:54,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:07:54,479 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:07:54,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:07:54,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:07:54,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:07:54,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:07:54,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:07:54,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:07:54,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:07:54,483 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:07:54,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:07:54,484 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:07:54,484 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:07:54,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:07:54,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:07:54,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:07:54,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:07:54,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:07:54,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:07:54,485 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:07:54,485 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:07:54,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:07:54,486 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:07:54,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:07:54,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:07:54,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:07:54,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:07:54,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:07:54,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:07:54,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:07:54,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:07:54,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:07:54,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:07:54,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:07:54,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:07:54,488 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:07:54,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:07:54,488 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:07:54,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:07:54,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:07:54,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:07:54,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:07:54,823 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:07:54,823 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:07:54,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-08-30 15:07:55,921 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:07:56,122 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:07:56,122 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-08-30 15:07:56,128 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a3f86d2/91ff0f9482c1470792c3bffd2ca9e213/FLAG5eff63553 [2023-08-30 15:07:56,139 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31a3f86d2/91ff0f9482c1470792c3bffd2ca9e213 [2023-08-30 15:07:56,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:07:56,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:07:56,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:07:56,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:07:56,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:07:56,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213653c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56, skipping insertion in model container [2023-08-30 15:07:56,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:07:56,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:07:56,356 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-extended.wvr.c[2856,2869] [2023-08-30 15:07:56,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:07:56,369 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:07:56,404 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-extended.wvr.c[2856,2869] [2023-08-30 15:07:56,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:07:56,414 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:07:56,415 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:07:56,420 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:07:56,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56 WrapperNode [2023-08-30 15:07:56,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:07:56,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:07:56,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:07:56,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:07:56,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,465 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-08-30 15:07:56,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:07:56,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:07:56,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:07:56,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:07:56,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:07:56,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:07:56,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:07:56,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:07:56,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (1/1) ... [2023-08-30 15:07:56,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:07:56,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:56,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:07:56,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:07:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:07:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:07:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:07:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:07:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:07:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:07:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:07:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:07:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:07:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:07:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:07:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:07:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:07:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:07:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:07:56,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:07:56,629 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:07:56,703 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:07:56,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:07:57,047 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:07:57,161 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:07:57,171 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 15:07:57,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:07:57 BoogieIcfgContainer [2023-08-30 15:07:57,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:07:57,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:07:57,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:07:57,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:07:57,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:07:56" (1/3) ... [2023-08-30 15:07:57,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c02ef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:07:57, skipping insertion in model container [2023-08-30 15:07:57,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:56" (2/3) ... [2023-08-30 15:07:57,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c02ef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:07:57, skipping insertion in model container [2023-08-30 15:07:57,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:07:57" (3/3) ... [2023-08-30 15:07:57,184 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-08-30 15:07:57,191 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:07:57,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:07:57,200 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 15:07:57,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:07:57,324 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:07:57,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 137 transitions, 298 flow [2023-08-30 15:07:57,448 INFO L130 PetriNetUnfolder]: 16/134 cut-off events. [2023-08-30 15:07:57,449 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:07:57,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 134 events. 16/134 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-08-30 15:07:57,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 137 transitions, 298 flow [2023-08-30 15:07:57,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 247 flow [2023-08-30 15:07:57,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:07:57,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 116 transitions, 247 flow [2023-08-30 15:07:57,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 116 transitions, 247 flow [2023-08-30 15:07:57,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 247 flow [2023-08-30 15:07:57,527 INFO L130 PetriNetUnfolder]: 15/116 cut-off events. [2023-08-30 15:07:57,527 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:07:57,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 116 events. 15/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 88. Up to 4 conditions per place. [2023-08-30 15:07:57,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 4488 [2023-08-30 15:08:01,347 INFO L134 LiptonReduction]: Checked pairs total: 4739 [2023-08-30 15:08:01,348 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-30 15:08:01,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:08:01,366 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;@5d4445, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:08:01,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-30 15:08:01,368 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 15:08:01,369 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:08:01,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:01,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:08:01,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:01,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:01,374 INFO L85 PathProgramCache]: Analyzing trace with hash 590988, now seen corresponding path program 1 times [2023-08-30 15:08:01,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:01,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005088590] [2023-08-30 15:08:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:01,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:01,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005088590] [2023-08-30 15:08:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005088590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:01,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:01,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:08:01,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905959186] [2023-08-30 15:08:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:01,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:01,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:08:01,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-30 15:08:01,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:01,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:01,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-30 15:08:01,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:02,004 INFO L130 PetriNetUnfolder]: 1473/2114 cut-off events. [2023-08-30 15:08:02,005 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-08-30 15:08:02,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 2114 events. 1473/2114 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9501 event pairs, 693 based on Foata normal form. 0/730 useless extension candidates. Maximal degree in co-relation 4104. Up to 2037 conditions per place. [2023-08-30 15:08:02,025 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 40 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-08-30 15:08:02,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 203 flow [2023-08-30 15:08:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-08-30 15:08:02,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908854166666667 [2023-08-30 15:08:02,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-08-30 15:08:02,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-08-30 15:08:02,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:02,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-08-30 15:08:02,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:02,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:02,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:02,060 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 73 flow. Second operand 3 states and 377 transitions. [2023-08-30 15:08:02,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 203 flow [2023-08-30 15:08:02,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 187 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:08:02,065 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 112 flow [2023-08-30 15:08:02,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 15:08:02,070 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-30 15:08:02,070 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 112 flow [2023-08-30 15:08:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:02,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:02,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:08:02,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:08:02,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:02,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 18322249, now seen corresponding path program 1 times [2023-08-30 15:08:02,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:02,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293921391] [2023-08-30 15:08:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:02,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:02,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293921391] [2023-08-30 15:08:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293921391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:02,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543360363] [2023-08-30 15:08:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:02,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:02,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:02,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:08:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:02,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:08:02,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:02,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:02,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543360363] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:02,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 15:08:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974853871] [2023-08-30 15:08:02,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 15:08:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 15:08:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:08:02,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 256 [2023-08-30 15:08:02,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:02,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:02,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 256 [2023-08-30 15:08:02,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:03,788 INFO L130 PetriNetUnfolder]: 4078/6181 cut-off events. [2023-08-30 15:08:03,790 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2023-08-30 15:08:03,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16421 conditions, 6181 events. 4078/6181 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 37668 event pairs, 159 based on Foata normal form. 0/3427 useless extension candidates. Maximal degree in co-relation 11196. Up to 3797 conditions per place. [2023-08-30 15:08:03,857 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 142 selfloop transitions, 56 changer transitions 0/198 dead transitions. [2023-08-30 15:08:03,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 198 transitions, 1016 flow [2023-08-30 15:08:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:08:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:08:03,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1450 transitions. [2023-08-30 15:08:03,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720052083333333 [2023-08-30 15:08:03,864 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1450 transitions. [2023-08-30 15:08:03,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1450 transitions. [2023-08-30 15:08:03,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:03,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1450 transitions. [2023-08-30 15:08:03,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:03,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:03,877 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:03,877 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 112 flow. Second operand 12 states and 1450 transitions. [2023-08-30 15:08:03,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 198 transitions, 1016 flow [2023-08-30 15:08:03,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 198 transitions, 1012 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:03,883 INFO L231 Difference]: Finished difference. Result has 52 places, 94 transitions, 673 flow [2023-08-30 15:08:03,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=673, PETRI_PLACES=52, PETRI_TRANSITIONS=94} [2023-08-30 15:08:03,884 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-08-30 15:08:03,884 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 94 transitions, 673 flow [2023-08-30 15:08:03,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:03,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:03,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:08:03,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:08:04,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:04,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:04,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:04,094 INFO L85 PathProgramCache]: Analyzing trace with hash 18322243, now seen corresponding path program 1 times [2023-08-30 15:08:04,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:04,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59862632] [2023-08-30 15:08:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:04,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:04,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59862632] [2023-08-30 15:08:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59862632] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:04,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65181541] [2023-08-30 15:08:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:04,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:04,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:04,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:08:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:04,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:08:04,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:04,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65181541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:04,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:04,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-30 15:08:04,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557085397] [2023-08-30 15:08:04,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:04,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 15:08:04,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:04,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 15:08:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:08:04,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 256 [2023-08-30 15:08:04,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 94 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:04,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:04,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 256 [2023-08-30 15:08:04,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:05,942 INFO L130 PetriNetUnfolder]: 5525/8404 cut-off events. [2023-08-30 15:08:05,943 INFO L131 PetriNetUnfolder]: For 22921/22921 co-relation queries the response was YES. [2023-08-30 15:08:05,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35753 conditions, 8404 events. 5525/8404 cut-off events. For 22921/22921 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 52541 event pairs, 137 based on Foata normal form. 844/8544 useless extension candidates. Maximal degree in co-relation 26042. Up to 5051 conditions per place. [2023-08-30 15:08:06,026 INFO L137 encePairwiseOnDemand]: 240/256 looper letters, 131 selfloop transitions, 73 changer transitions 0/204 dead transitions. [2023-08-30 15:08:06,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 204 transitions, 1757 flow [2023-08-30 15:08:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:08:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:08:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 942 transitions. [2023-08-30 15:08:06,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599609375 [2023-08-30 15:08:06,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 942 transitions. [2023-08-30 15:08:06,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 942 transitions. [2023-08-30 15:08:06,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:06,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 942 transitions. [2023-08-30 15:08:06,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,039 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,039 INFO L175 Difference]: Start difference. First operand has 52 places, 94 transitions, 673 flow. Second operand 8 states and 942 transitions. [2023-08-30 15:08:06,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 204 transitions, 1757 flow [2023-08-30 15:08:06,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 204 transitions, 1622 flow, removed 65 selfloop flow, removed 3 redundant places. [2023-08-30 15:08:06,286 INFO L231 Difference]: Finished difference. Result has 60 places, 136 transitions, 1392 flow [2023-08-30 15:08:06,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1392, PETRI_PLACES=60, PETRI_TRANSITIONS=136} [2023-08-30 15:08:06,287 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-08-30 15:08:06,287 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 136 transitions, 1392 flow [2023-08-30 15:08:06,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.5) internal successors, (812), 8 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:06,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:06,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:06,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:08:06,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:06,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash 359364977, now seen corresponding path program 1 times [2023-08-30 15:08:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:06,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850038048] [2023-08-30 15:08:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:06,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:06,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850038048] [2023-08-30 15:08:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850038048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:06,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:06,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:08:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355519786] [2023-08-30 15:08:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:08:06,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-08-30 15:08:06,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 136 transitions, 1392 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:06,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:06,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-08-30 15:08:06,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:07,427 INFO L130 PetriNetUnfolder]: 4641/7070 cut-off events. [2023-08-30 15:08:07,427 INFO L131 PetriNetUnfolder]: For 39502/39502 co-relation queries the response was YES. [2023-08-30 15:08:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35489 conditions, 7070 events. 4641/7070 cut-off events. For 39502/39502 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 42715 event pairs, 2210 based on Foata normal form. 352/7412 useless extension candidates. Maximal degree in co-relation 21059. Up to 7070 conditions per place. [2023-08-30 15:08:07,478 INFO L137 encePairwiseOnDemand]: 254/256 looper letters, 128 selfloop transitions, 1 changer transitions 0/129 dead transitions. [2023-08-30 15:08:07,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 129 transitions, 1582 flow [2023-08-30 15:08:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:07,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-30 15:08:07,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518229166666667 [2023-08-30 15:08:07,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-30 15:08:07,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-30 15:08:07,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:07,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-30 15:08:07,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,484 INFO L175 Difference]: Start difference. First operand has 60 places, 136 transitions, 1392 flow. Second operand 3 states and 347 transitions. [2023-08-30 15:08:07,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 129 transitions, 1582 flow [2023-08-30 15:08:07,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 1439 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:07,721 INFO L231 Difference]: Finished difference. Result has 59 places, 129 transitions, 1183 flow [2023-08-30 15:08:07,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=59, PETRI_TRANSITIONS=129} [2023-08-30 15:08:07,723 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 15:08:07,723 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 129 transitions, 1183 flow [2023-08-30 15:08:07,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:07,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:07,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:08:07,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:07,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 362911075, now seen corresponding path program 1 times [2023-08-30 15:08:07,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:07,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825828243] [2023-08-30 15:08:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:07,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:07,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825828243] [2023-08-30 15:08:07,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825828243] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:07,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271840079] [2023-08-30 15:08:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:07,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:07,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:07,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:07,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:08:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:07,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:08:07,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:08,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271840079] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:08,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 15:08:08,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3, 3] total 8 [2023-08-30 15:08:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108131474] [2023-08-30 15:08:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:08,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-30 15:08:08,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-08-30 15:08:08,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 129 transitions, 1183 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:08,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:08,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-08-30 15:08:08,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:09,111 INFO L130 PetriNetUnfolder]: 4049/6176 cut-off events. [2023-08-30 15:08:09,111 INFO L131 PetriNetUnfolder]: For 21874/21874 co-relation queries the response was YES. [2023-08-30 15:08:09,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27343 conditions, 6176 events. 4049/6176 cut-off events. For 21874/21874 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 36497 event pairs, 1977 based on Foata normal form. 214/6380 useless extension candidates. Maximal degree in co-relation 27323. Up to 6176 conditions per place. [2023-08-30 15:08:09,164 INFO L137 encePairwiseOnDemand]: 254/256 looper letters, 120 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2023-08-30 15:08:09,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 121 transitions, 1347 flow [2023-08-30 15:08:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-30 15:08:09,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2023-08-30 15:08:09,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-30 15:08:09,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-30 15:08:09,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:09,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-30 15:08:09,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,170 INFO L175 Difference]: Start difference. First operand has 59 places, 129 transitions, 1183 flow. Second operand 3 states and 346 transitions. [2023-08-30 15:08:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 121 transitions, 1347 flow [2023-08-30 15:08:09,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 121 transitions, 1346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:09,290 INFO L231 Difference]: Finished difference. Result has 59 places, 121 transitions, 1106 flow [2023-08-30 15:08:09,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1106, PETRI_PLACES=59, PETRI_TRANSITIONS=121} [2023-08-30 15:08:09,293 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 15:08:09,293 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 121 transitions, 1106 flow [2023-08-30 15:08:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:09,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:09,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:09,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:09,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:09,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:09,504 INFO L85 PathProgramCache]: Analyzing trace with hash 362911068, now seen corresponding path program 1 times [2023-08-30 15:08:09,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940064743] [2023-08-30 15:08:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:09,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:09,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940064743] [2023-08-30 15:08:09,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940064743] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117932616] [2023-08-30 15:08:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:09,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:09,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:08:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:09,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:08:09,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:09,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:08:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117932616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:09,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:08:09,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 15:08:09,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636490081] [2023-08-30 15:08:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:09,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:08:09,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:08:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:08:09,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-08-30 15:08:09,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 121 transitions, 1106 flow. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:09,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-08-30 15:08:09,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:10,546 INFO L130 PetriNetUnfolder]: 2527/3830 cut-off events. [2023-08-30 15:08:10,547 INFO L131 PetriNetUnfolder]: For 20665/20665 co-relation queries the response was YES. [2023-08-30 15:08:10,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15360 conditions, 3830 events. 2527/3830 cut-off events. For 20665/20665 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 20350 event pairs, 643 based on Foata normal form. 1226/5056 useless extension candidates. Maximal degree in co-relation 15339. Up to 2462 conditions per place. [2023-08-30 15:08:10,569 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 106 selfloop transitions, 36 changer transitions 0/142 dead transitions. [2023-08-30 15:08:10,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 142 transitions, 1478 flow [2023-08-30 15:08:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:08:10,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:08:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2023-08-30 15:08:10,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-08-30 15:08:10,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 476 transitions. [2023-08-30 15:08:10,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 476 transitions. [2023-08-30 15:08:10,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:10,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 476 transitions. [2023-08-30 15:08:10,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,575 INFO L175 Difference]: Start difference. First operand has 59 places, 121 transitions, 1106 flow. Second operand 4 states and 476 transitions. [2023-08-30 15:08:10,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 142 transitions, 1478 flow [2023-08-30 15:08:10,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 142 transitions, 1441 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:10,620 INFO L231 Difference]: Finished difference. Result has 57 places, 117 transitions, 1203 flow [2023-08-30 15:08:10,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1203, PETRI_PLACES=57, PETRI_TRANSITIONS=117} [2023-08-30 15:08:10,622 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-08-30 15:08:10,623 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 117 transitions, 1203 flow [2023-08-30 15:08:10,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:10,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:10,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:10,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:10,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:10,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:10,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1744585825, now seen corresponding path program 1 times [2023-08-30 15:08:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:10,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881366826] [2023-08-30 15:08:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:10,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:10,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881366826] [2023-08-30 15:08:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881366826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770874685] [2023-08-30 15:08:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:10,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:10,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:10,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:10,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:08:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:11,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:11,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:11,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:11,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770874685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:11,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:11,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 15:08:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535122731] [2023-08-30 15:08:11,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:11,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:08:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:08:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:08:11,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 256 [2023-08-30 15:08:11,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 117 transitions, 1203 flow. Second operand has 14 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:11,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:11,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 256 [2023-08-30 15:08:11,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:13,155 INFO L130 PetriNetUnfolder]: 5912/8803 cut-off events. [2023-08-30 15:08:13,155 INFO L131 PetriNetUnfolder]: For 38729/38729 co-relation queries the response was YES. [2023-08-30 15:08:13,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38769 conditions, 8803 events. 5912/8803 cut-off events. For 38729/38729 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 51980 event pairs, 307 based on Foata normal form. 330/9133 useless extension candidates. Maximal degree in co-relation 38746. Up to 3357 conditions per place. [2023-08-30 15:08:13,220 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 191 selfloop transitions, 238 changer transitions 0/429 dead transitions. [2023-08-30 15:08:13,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 429 transitions, 4725 flow [2023-08-30 15:08:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 15:08:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 15:08:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1397 transitions. [2023-08-30 15:08:13,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38978794642857145 [2023-08-30 15:08:13,224 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1397 transitions. [2023-08-30 15:08:13,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1397 transitions. [2023-08-30 15:08:13,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:13,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1397 transitions. [2023-08-30 15:08:13,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 99.78571428571429) internal successors, (1397), 14 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 256.0) internal successors, (3840), 15 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,233 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 256.0) internal successors, (3840), 15 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,233 INFO L175 Difference]: Start difference. First operand has 57 places, 117 transitions, 1203 flow. Second operand 14 states and 1397 transitions. [2023-08-30 15:08:13,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 429 transitions, 4725 flow [2023-08-30 15:08:13,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 429 transitions, 4724 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:13,347 INFO L231 Difference]: Finished difference. Result has 81 places, 305 transitions, 4484 flow [2023-08-30 15:08:13,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4484, PETRI_PLACES=81, PETRI_TRANSITIONS=305} [2023-08-30 15:08:13,348 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2023-08-30 15:08:13,348 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 305 transitions, 4484 flow [2023-08-30 15:08:13,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 86.71428571428571) internal successors, (1214), 14 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:13,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:13,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:13,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:13,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:13,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:13,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1744585870, now seen corresponding path program 1 times [2023-08-30 15:08:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655550215] [2023-08-30 15:08:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655550215] [2023-08-30 15:08:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655550215] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518141650] [2023-08-30 15:08:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:13,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:13,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:13,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:13,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:08:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:13,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 15:08:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:13,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:14,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518141650] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:14,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:14,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 15:08:14,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488179929] [2023-08-30 15:08:14,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:08:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:08:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:08:14,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 256 [2023-08-30 15:08:14,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 305 transitions, 4484 flow. Second operand has 14 states, 14 states have (on average 90.71428571428571) internal successors, (1270), 14 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:14,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:14,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 256 [2023-08-30 15:08:14,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:17,268 INFO L130 PetriNetUnfolder]: 10117/14812 cut-off events. [2023-08-30 15:08:17,268 INFO L131 PetriNetUnfolder]: For 154388/154388 co-relation queries the response was YES. [2023-08-30 15:08:17,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88293 conditions, 14812 events. 10117/14812 cut-off events. For 154388/154388 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 90934 event pairs, 667 based on Foata normal form. 546/15358 useless extension candidates. Maximal degree in co-relation 88257. Up to 6107 conditions per place. [2023-08-30 15:08:17,403 INFO L137 encePairwiseOnDemand]: 245/256 looper letters, 325 selfloop transitions, 475 changer transitions 0/800 dead transitions. [2023-08-30 15:08:17,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 800 transitions, 12243 flow [2023-08-30 15:08:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 15:08:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 15:08:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1761 transitions. [2023-08-30 15:08:17,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046415441176471 [2023-08-30 15:08:17,410 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1761 transitions. [2023-08-30 15:08:17,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1761 transitions. [2023-08-30 15:08:17,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:17,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1761 transitions. [2023-08-30 15:08:17,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 103.58823529411765) internal successors, (1761), 17 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,422 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 256.0) internal successors, (4608), 18 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,422 INFO L175 Difference]: Start difference. First operand has 81 places, 305 transitions, 4484 flow. Second operand 17 states and 1761 transitions. [2023-08-30 15:08:17,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 800 transitions, 12243 flow [2023-08-30 15:08:18,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 800 transitions, 11494 flow, removed 372 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:18,534 INFO L231 Difference]: Finished difference. Result has 109 places, 615 transitions, 10990 flow [2023-08-30 15:08:18,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10990, PETRI_PLACES=109, PETRI_TRANSITIONS=615} [2023-08-30 15:08:18,535 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2023-08-30 15:08:18,535 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 615 transitions, 10990 flow [2023-08-30 15:08:18,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.71428571428571) internal successors, (1270), 14 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:18,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:18,536 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:18,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:18,741 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 [2023-08-30 15:08:18,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:18,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:18,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1744556073, now seen corresponding path program 2 times [2023-08-30 15:08:18,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:18,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673696687] [2023-08-30 15:08:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:18,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673696687] [2023-08-30 15:08:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673696687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:18,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372641542] [2023-08-30 15:08:18,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:08:18,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:18,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:18,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:18,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:08:18,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:08:18,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:08:18,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 15:08:18,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:19,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372641542] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:19,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:19,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-30 15:08:19,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545481947] [2023-08-30 15:08:19,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:19,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:08:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:19,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:08:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:08:19,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 256 [2023-08-30 15:08:19,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 615 transitions, 10990 flow. Second operand has 14 states, 14 states have (on average 88.71428571428571) internal successors, (1242), 14 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:19,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:19,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 256 [2023-08-30 15:08:19,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:24,843 INFO L130 PetriNetUnfolder]: 19185/27834 cut-off events. [2023-08-30 15:08:24,843 INFO L131 PetriNetUnfolder]: For 486411/486411 co-relation queries the response was YES. [2023-08-30 15:08:25,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198301 conditions, 27834 events. 19185/27834 cut-off events. For 486411/486411 co-relation queries the response was YES. Maximal size of possible extension queue 1455. Compared 181717 event pairs, 993 based on Foata normal form. 1040/28874 useless extension candidates. Maximal degree in co-relation 198251. Up to 9337 conditions per place. [2023-08-30 15:08:25,245 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 511 selfloop transitions, 1354 changer transitions 0/1865 dead transitions. [2023-08-30 15:08:25,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1865 transitions, 35289 flow [2023-08-30 15:08:25,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 15:08:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 15:08:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2050 transitions. [2023-08-30 15:08:25,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400390625 [2023-08-30 15:08:25,252 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2050 transitions. [2023-08-30 15:08:25,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2050 transitions. [2023-08-30 15:08:25,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:25,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2050 transitions. [2023-08-30 15:08:25,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 102.5) internal successors, (2050), 20 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:25,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:25,265 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 256.0) internal successors, (5376), 21 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:25,265 INFO L175 Difference]: Start difference. First operand has 109 places, 615 transitions, 10990 flow. Second operand 20 states and 2050 transitions. [2023-08-30 15:08:25,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 1865 transitions, 35289 flow [2023-08-30 15:08:30,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 1865 transitions, 33306 flow, removed 974 selfloop flow, removed 6 redundant places. [2023-08-30 15:08:30,531 INFO L231 Difference]: Finished difference. Result has 138 places, 1673 transitions, 34345 flow [2023-08-30 15:08:30,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=10137, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=34345, PETRI_PLACES=138, PETRI_TRANSITIONS=1673} [2023-08-30 15:08:30,532 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 102 predicate places. [2023-08-30 15:08:30,532 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 1673 transitions, 34345 flow [2023-08-30 15:08:30,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.71428571428571) internal successors, (1242), 14 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:30,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:30,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 15:08:30,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 15:08:30,741 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 [2023-08-30 15:08:30,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:08:30,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:30,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1752414803, now seen corresponding path program 1 times [2023-08-30 15:08:30,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:30,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791574753] [2023-08-30 15:08:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:30,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:30,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:30,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791574753] [2023-08-30 15:08:30,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791574753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:08:30,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903304413] [2023-08-30 15:08:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:30,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:08:30,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:08:30,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:08:30,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:08:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:31,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 15:08:31,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:08:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:31,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:08:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:08:31,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903304413] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:08:31,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:08:31,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-30 15:08:31,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314448724] [2023-08-30 15:08:31,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:08:31,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 15:08:31,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 15:08:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-08-30 15:08:31,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 256 [2023-08-30 15:08:31,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 1673 transitions, 34345 flow. Second operand has 15 states, 15 states have (on average 86.73333333333333) internal successors, (1301), 15 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:31,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:31,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 256 [2023-08-30 15:08:31,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:48,541 INFO L130 PetriNetUnfolder]: 35085/50482 cut-off events. [2023-08-30 15:08:48,541 INFO L131 PetriNetUnfolder]: For 1191000/1191000 co-relation queries the response was YES. [2023-08-30 15:08:49,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420055 conditions, 50482 events. 35085/50482 cut-off events. For 1191000/1191000 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 348419 event pairs, 1337 based on Foata normal form. 3856/54338 useless extension candidates. Maximal degree in co-relation 419991. Up to 12459 conditions per place. [2023-08-30 15:08:49,375 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 1624 selfloop transitions, 3060 changer transitions 1/4685 dead transitions. [2023-08-30 15:08:49,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 4685 transitions, 102161 flow [2023-08-30 15:08:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-30 15:08:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-30 15:08:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3629 transitions. [2023-08-30 15:08:49,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38312922297297297 [2023-08-30 15:08:49,387 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3629 transitions. [2023-08-30 15:08:49,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3629 transitions. [2023-08-30 15:08:49,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:49,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3629 transitions. [2023-08-30 15:08:49,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 98.08108108108108) internal successors, (3629), 37 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:49,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 256.0) internal successors, (9728), 38 states have internal predecessors, (9728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:49,412 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 256.0) internal successors, (9728), 38 states have internal predecessors, (9728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:49,412 INFO L175 Difference]: Start difference. First operand has 138 places, 1673 transitions, 34345 flow. Second operand 37 states and 3629 transitions. [2023-08-30 15:08:49,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 4685 transitions, 102161 flow [2023-08-30 15:09:32,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 4685 transitions, 96783 flow, removed 2681 selfloop flow, removed 3 redundant places. [2023-08-30 15:09:32,247 INFO L231 Difference]: Finished difference. Result has 204 places, 3877 transitions, 91854 flow [2023-08-30 15:09:32,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=30812, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=91854, PETRI_PLACES=204, PETRI_TRANSITIONS=3877} [2023-08-30 15:09:32,249 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 168 predicate places. [2023-08-30 15:09:32,249 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 3877 transitions, 91854 flow [2023-08-30 15:09:32,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 86.73333333333333) internal successors, (1301), 15 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:32,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:09:32,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:09:32,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 15:09:32,450 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,SelfDestructingSolverStorable9 [2023-08-30 15:09:32,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:09:32,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:09:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1744556995, now seen corresponding path program 2 times [2023-08-30 15:09:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:09:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843823945] [2023-08-30 15:09:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:09:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:09:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:09:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:09:32,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:09:32,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843823945] [2023-08-30 15:09:32,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843823945] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:09:32,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008859544] [2023-08-30 15:09:32,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:09:32,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:09:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:09:32,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:09:32,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 15:09:32,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:09:32,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:09:32,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 15:09:32,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:09:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:09:32,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:09:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:09:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008859544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:09:33,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:09:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-08-30 15:09:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424028074] [2023-08-30 15:09:33,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:09:33,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 15:09:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:09:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 15:09:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-30 15:09:33,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 256 [2023-08-30 15:09:33,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 3877 transitions, 91854 flow. Second operand has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:33,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:09:33,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 256 [2023-08-30 15:09:33,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:10:34,863 INFO L130 PetriNetUnfolder]: 66010/95075 cut-off events. [2023-08-30 15:10:34,863 INFO L131 PetriNetUnfolder]: For 3209591/3209591 co-relation queries the response was YES. [2023-08-30 15:10:36,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925091 conditions, 95075 events. 66010/95075 cut-off events. For 3209591/3209591 co-relation queries the response was YES. Maximal size of possible extension queue 5157. Compared 714909 event pairs, 3472 based on Foata normal form. 3522/98597 useless extension candidates. Maximal degree in co-relation 924995. Up to 18257 conditions per place. [2023-08-30 15:10:37,420 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 3808 selfloop transitions, 5461 changer transitions 0/9269 dead transitions. [2023-08-30 15:10:37,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 9269 transitions, 234371 flow [2023-08-30 15:10:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 15:10:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 15:10:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2081 transitions. [2023-08-30 15:10:37,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38709077380952384 [2023-08-30 15:10:37,426 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2081 transitions. [2023-08-30 15:10:37,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2081 transitions. [2023-08-30 15:10:37,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:10:37,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2081 transitions. [2023-08-30 15:10:37,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 99.0952380952381) internal successors, (2081), 21 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:37,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:37,437 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 256.0) internal successors, (5632), 22 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:10:37,437 INFO L175 Difference]: Start difference. First operand has 204 places, 3877 transitions, 91854 flow. Second operand 21 states and 2081 transitions. [2023-08-30 15:10:37,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 9269 transitions, 234371 flow [2023-08-30 15:14:25,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 9269 transitions, 229882 flow, removed 2237 selfloop flow, removed 3 redundant places. [2023-08-30 15:14:26,080 INFO L231 Difference]: Finished difference. Result has 240 places, 7773 transitions, 206399 flow [2023-08-30 15:14:26,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=87448, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2024, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1022, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=206399, PETRI_PLACES=240, PETRI_TRANSITIONS=7773} [2023-08-30 15:14:26,084 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 204 predicate places. [2023-08-30 15:14:26,084 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 7773 transitions, 206399 flow [2023-08-30 15:14:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:26,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:14:26,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:14:26,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 15:14:26,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:14:26,290 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:14:26,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:14:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1732156840, now seen corresponding path program 1 times [2023-08-30 15:14:26,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:14:26,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753696894] [2023-08-30 15:14:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:14:26,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:14:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:14:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:14:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:14:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753696894] [2023-08-30 15:14:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753696894] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:14:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144958099] [2023-08-30 15:14:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:14:26,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:14:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:14:26,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:14:26,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 15:14:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:14:26,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:14:26,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:14:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:14:26,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:14:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144958099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:14:26,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:14:26,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 15:14:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037006160] [2023-08-30 15:14:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:14:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:14:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:14:26,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:14:26,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:14:26,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 256 [2023-08-30 15:14:26,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 7773 transitions, 206399 flow. Second operand has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:14:26,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:14:26,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 256 [2023-08-30 15:14:26,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:17:12,794 INFO L130 PetriNetUnfolder]: 59195/85582 cut-off events. [2023-08-30 15:17:12,794 INFO L131 PetriNetUnfolder]: For 3771489/3771489 co-relation queries the response was YES. [2023-08-30 15:17:14,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933236 conditions, 85582 events. 59195/85582 cut-off events. For 3771489/3771489 co-relation queries the response was YES. Maximal size of possible extension queue 4474. Compared 635092 event pairs, 5468 based on Foata normal form. 4500/90082 useless extension candidates. Maximal degree in co-relation 933121. Up to 68748 conditions per place. [2023-08-30 15:17:15,252 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 5497 selfloop transitions, 1506 changer transitions 124/7127 dead transitions. [2023-08-30 15:17:15,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 7127 transitions, 203703 flow [2023-08-30 15:17:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:17:15,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:17:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-08-30 15:17:15,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45703125 [2023-08-30 15:17:15,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-08-30 15:17:15,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-08-30 15:17:15,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:17:15,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-08-30 15:17:15,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:17:15,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:17:15,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:17:15,257 INFO L175 Difference]: Start difference. First operand has 240 places, 7773 transitions, 206399 flow. Second operand 4 states and 468 transitions. [2023-08-30 15:17:15,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 7127 transitions, 203703 flow [2023-08-30 15:20:48,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 7127 transitions, 201410 flow, removed 1135 selfloop flow, removed 2 redundant places. [2023-08-30 15:20:48,400 INFO L231 Difference]: Finished difference. Result has 243 places, 6961 transitions, 189000 flow [2023-08-30 15:20:48,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=185672, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7063, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189000, PETRI_PLACES=243, PETRI_TRANSITIONS=6961} [2023-08-30 15:20:48,407 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 207 predicate places. [2023-08-30 15:20:48,407 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 6961 transitions, 189000 flow [2023-08-30 15:20:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:48,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:20:48,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:20:48,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 15:20:48,613 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,SelfDestructingSolverStorable11 [2023-08-30 15:20:48,613 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-30 15:20:48,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:20:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1732157832, now seen corresponding path program 1 times [2023-08-30 15:20:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:20:48,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275819100] [2023-08-30 15:20:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:48,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:20:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:48,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:20:48,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275819100] [2023-08-30 15:20:48,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275819100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:20:48,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:20:48,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:20:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982406652] [2023-08-30 15:20:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:20:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:20:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:20:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:20:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:20:48,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-30 15:20:48,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 6961 transitions, 189000 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:48,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:20:48,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-30 15:20:48,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15