./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-barrier.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-barrier.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 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 --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 15:06:35,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:06:35,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:06:35,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:06:35,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:06:35,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:06:35,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:06:35,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:06:35,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:06:35,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:06:35,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:06:35,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:06:35,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:06:35,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:06:35,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:06:35,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:06:35,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:06:35,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:06:35,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:06:35,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:06:35,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:06:35,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:06:35,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:06:35,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:06:35,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:06:35,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:06:35,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:06:36,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:06:36,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:06:36,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:06:36,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:06:36,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:06:36,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:06:36,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:06:36,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:06:36,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:06:36,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:06:36,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:06:36,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:06:36,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:06:36,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:06:36,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:06:36,045 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:06:36,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:06:36,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:06:36,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:06:36,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:06:36,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:06:36,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:06:36,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:06:36,049 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:06:36,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:06:36,050 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:06:36,050 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:06:36,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:06:36,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:06:36,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:06:36,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:06:36,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:06:36,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:06:36,051 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:06:36,051 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:06:36,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:06:36,052 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:06:36,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:06:36,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:06:36,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:06:36,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:06:36,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:06:36,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:06:36,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:06:36,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:06:36,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:06:36,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:06:36,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:06:36,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:06:36,054 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:06:36,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:06:36,055 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:06:36,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:06:36,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:06:36,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:06:36,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:06:36,409 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:06:36,409 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:06:36,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2023-08-30 15:06:37,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:06:37,879 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:06:37,879 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2023-08-30 15:06:37,885 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a73b9fb15/cce75620058442f49e2578d9803535a8/FLAGb2dac8081 [2023-08-30 15:06:38,267 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a73b9fb15/cce75620058442f49e2578d9803535a8 [2023-08-30 15:06:38,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:06:38,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:06:38,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:06:38,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:06:38,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:06:38,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256f737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38, skipping insertion in model container [2023-08-30 15:06:38,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:06:38,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:06:38,444 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-barrier.wvr.c[4722,4735] [2023-08-30 15:06:38,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:06:38,455 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:06:38,480 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-barrier.wvr.c[4722,4735] [2023-08-30 15:06:38,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:06:38,497 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:06:38,498 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:06:38,503 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:06:38,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38 WrapperNode [2023-08-30 15:06:38,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:06:38,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:06:38,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:06:38,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:06:38,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,541 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 281 [2023-08-30 15:06:38,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:06:38,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:06:38,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:06:38,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:06:38,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,563 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:06:38,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:06:38,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:06:38,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:06:38,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (1/1) ... [2023-08-30 15:06:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:06:38,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:06:38,606 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 15:06:38,624 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 15:06:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:06:38,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:06:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:06:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:06:38,651 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:06:38,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:06:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:06:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:06:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:06:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:06:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:06:38,652 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:06:38,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:06:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 15:06:38,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 15:06:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 15:06:38,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 15:06:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:06:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:06:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:06:38,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:06:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:06:38,655 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 15:06:38,821 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:06:38,823 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:06:39,166 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:06:39,268 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:06:39,269 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 15:06:39,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:06:39 BoogieIcfgContainer [2023-08-30 15:06:39,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:06:39,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:06:39,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:06:39,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:06:39,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:06:38" (1/3) ... [2023-08-30 15:06:39,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da5185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:06:39, skipping insertion in model container [2023-08-30 15:06:39,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:06:38" (2/3) ... [2023-08-30 15:06:39,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da5185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:06:39, skipping insertion in model container [2023-08-30 15:06:39,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:06:39" (3/3) ... [2023-08-30 15:06:39,278 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2023-08-30 15:06:39,284 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:06:39,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:06:39,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 15:06:39,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:06:39,489 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-30 15:06:39,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 250 transitions, 572 flow [2023-08-30 15:06:39,652 INFO L130 PetriNetUnfolder]: 8/222 cut-off events. [2023-08-30 15:06:39,652 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 15:06:39,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 222 events. 8/222 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 324 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-30 15:06:39,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 250 transitions, 572 flow [2023-08-30 15:06:39,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 206 transitions, 457 flow [2023-08-30 15:06:39,677 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:06:39,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 206 transitions, 457 flow [2023-08-30 15:06:39,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 206 transitions, 457 flow [2023-08-30 15:06:39,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 206 transitions, 457 flow [2023-08-30 15:06:39,768 INFO L130 PetriNetUnfolder]: 7/206 cut-off events. [2023-08-30 15:06:39,768 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 15:06:39,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 206 events. 7/206 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 322 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-30 15:06:39,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 9812 [2023-08-30 15:06:43,843 INFO L134 LiptonReduction]: Checked pairs total: 68765 [2023-08-30 15:06:43,843 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-30 15:06:43,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:06:43,861 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;@10df63fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:06:43,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-30 15:06:43,865 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-30 15:06:43,865 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:06:43,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:06:43,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:06:43,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:06:43,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:06:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1532513516, now seen corresponding path program 1 times [2023-08-30 15:06:43,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:06:43,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360100155] [2023-08-30 15:06:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:06:43,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:06:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:06:44,142 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 15:06:44,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:06:44,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360100155] [2023-08-30 15:06:44,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360100155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:06:44,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:06:44,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:06:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852415267] [2023-08-30 15:06:44,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:06:44,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 15:06:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:06:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 15:06:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 15:06:44,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 396 [2023-08-30 15:06:44,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 229 flow. Second operand has 2 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:06:44,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:06:44,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 396 [2023-08-30 15:06:44,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:01,139 INFO L130 PetriNetUnfolder]: 196365/258346 cut-off events. [2023-08-30 15:07:01,139 INFO L131 PetriNetUnfolder]: For 20734/20734 co-relation queries the response was YES. [2023-08-30 15:07:01,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528652 conditions, 258346 events. 196365/258346 cut-off events. For 20734/20734 co-relation queries the response was YES. Maximal size of possible extension queue 7336. Compared 1743230 event pairs, 190641 based on Foata normal form. 318/202422 useless extension candidates. Maximal degree in co-relation 526384. Up to 246927 conditions per place. [2023-08-30 15:07:03,158 INFO L137 encePairwiseOnDemand]: 394/396 looper letters, 59 selfloop transitions, 0 changer transitions 0/90 dead transitions. [2023-08-30 15:07:03,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 343 flow [2023-08-30 15:07:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 15:07:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 15:07:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 471 transitions. [2023-08-30 15:07:03,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5946969696969697 [2023-08-30 15:07:03,172 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 471 transitions. [2023-08-30 15:07:03,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 471 transitions. [2023-08-30 15:07:03,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:03,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 471 transitions. [2023-08-30 15:07:03,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 235.5) internal successors, (471), 2 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:03,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:03,186 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:03,187 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 229 flow. Second operand 2 states and 471 transitions. [2023-08-30 15:07:03,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 90 transitions, 343 flow [2023-08-30 15:07:04,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 15:07:04,147 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 196 flow [2023-08-30 15:07:04,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=196, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-08-30 15:07:04,152 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2023-08-30 15:07:04,152 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 196 flow [2023-08-30 15:07:04,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:04,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:04,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:04,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:07:04,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:04,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash -503535594, now seen corresponding path program 1 times [2023-08-30 15:07:04,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:04,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778936634] [2023-08-30 15:07:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:04,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:04,357 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 15:07:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778936634] [2023-08-30 15:07:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778936634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:07:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162890942] [2023-08-30 15:07:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:04,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 396 [2023-08-30 15:07:04,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:04,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:04,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 396 [2023-08-30 15:07:04,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:14,900 INFO L130 PetriNetUnfolder]: 153807/203388 cut-off events. [2023-08-30 15:07:14,900 INFO L131 PetriNetUnfolder]: For 3685/3685 co-relation queries the response was YES. [2023-08-30 15:07:15,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402328 conditions, 203388 events. 153807/203388 cut-off events. For 3685/3685 co-relation queries the response was YES. Maximal size of possible extension queue 5820. Compared 1360124 event pairs, 148995 based on Foata normal form. 0/166031 useless extension candidates. Maximal degree in co-relation 402325. Up to 193874 conditions per place. [2023-08-30 15:07:16,527 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 56 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-30 15:07:16,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 306 flow [2023-08-30 15:07:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-08-30 15:07:16,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622895622895623 [2023-08-30 15:07:16,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-08-30 15:07:16,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-08-30 15:07:16,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:16,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-08-30 15:07:16,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:16,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:16,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:16,538 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 196 flow. Second operand 3 states and 668 transitions. [2023-08-30 15:07:16,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 306 flow [2023-08-30 15:07:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:07:16,545 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 194 flow [2023-08-30 15:07:16,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2023-08-30 15:07:16,546 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2023-08-30 15:07:16,546 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 194 flow [2023-08-30 15:07:16,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:16,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:16,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 15:07:16,547 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:16,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash -503535593, now seen corresponding path program 1 times [2023-08-30 15:07:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:16,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588125340] [2023-08-30 15:07:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:16,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:16,774 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 15:07:16,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588125340] [2023-08-30 15:07:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588125340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:16,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:16,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:07:16,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193828424] [2023-08-30 15:07:16,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:16,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:07:16,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:07:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:07:16,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 396 [2023-08-30 15:07:16,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:16,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:16,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 396 [2023-08-30 15:07:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:25,578 INFO L130 PetriNetUnfolder]: 132797/177917 cut-off events. [2023-08-30 15:07:25,578 INFO L131 PetriNetUnfolder]: For 3132/3132 co-relation queries the response was YES. [2023-08-30 15:07:25,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350123 conditions, 177917 events. 132797/177917 cut-off events. For 3132/3132 co-relation queries the response was YES. Maximal size of possible extension queue 5227. Compared 1228906 event pairs, 42452 based on Foata normal form. 4452/148317 useless extension candidates. Maximal degree in co-relation 350119. Up to 149211 conditions per place. [2023-08-30 15:07:26,543 INFO L137 encePairwiseOnDemand]: 390/396 looper letters, 120 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2023-08-30 15:07:26,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 155 transitions, 593 flow [2023-08-30 15:07:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:07:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:07:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 930 transitions. [2023-08-30 15:07:26,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5871212121212122 [2023-08-30 15:07:26,546 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 930 transitions. [2023-08-30 15:07:26,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 930 transitions. [2023-08-30 15:07:26,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:26,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 930 transitions. [2023-08-30 15:07:26,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:26,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:26,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:26,554 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 194 flow. Second operand 4 states and 930 transitions. [2023-08-30 15:07:26,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 155 transitions, 593 flow [2023-08-30 15:07:26,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:26,557 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 216 flow [2023-08-30 15:07:26,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2023-08-30 15:07:26,558 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -7 predicate places. [2023-08-30 15:07:26,559 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 216 flow [2023-08-30 15:07:26,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:26,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:26,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:07:26,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:26,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 739991958, now seen corresponding path program 1 times [2023-08-30 15:07:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559226223] [2023-08-30 15:07:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:26,646 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 15:07:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559226223] [2023-08-30 15:07:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559226223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:07:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313810965] [2023-08-30 15:07:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:07:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:07:26,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:07:26,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 396 [2023-08-30 15:07:26,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:26,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:26,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 396 [2023-08-30 15:07:26,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:33,612 INFO L130 PetriNetUnfolder]: 100729/138736 cut-off events. [2023-08-30 15:07:33,612 INFO L131 PetriNetUnfolder]: For 13511/13511 co-relation queries the response was YES. [2023-08-30 15:07:33,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283542 conditions, 138736 events. 100729/138736 cut-off events. For 13511/13511 co-relation queries the response was YES. Maximal size of possible extension queue 4077. Compared 966632 event pairs, 7596 based on Foata normal form. 3080/120073 useless extension candidates. Maximal degree in co-relation 283537. Up to 114552 conditions per place. [2023-08-30 15:07:34,616 INFO L137 encePairwiseOnDemand]: 387/396 looper letters, 150 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2023-08-30 15:07:34,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 791 flow [2023-08-30 15:07:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 15:07:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 15:07:34,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1156 transitions. [2023-08-30 15:07:34,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838383838383838 [2023-08-30 15:07:34,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1156 transitions. [2023-08-30 15:07:34,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1156 transitions. [2023-08-30 15:07:34,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:34,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1156 transitions. [2023-08-30 15:07:34,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.2) internal successors, (1156), 5 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:34,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:34,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:34,627 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 216 flow. Second operand 5 states and 1156 transitions. [2023-08-30 15:07:34,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 791 flow [2023-08-30 15:07:34,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:07:34,634 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 240 flow [2023-08-30 15:07:34,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2023-08-30 15:07:34,635 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -4 predicate places. [2023-08-30 15:07:34,635 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 240 flow [2023-08-30 15:07:34,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.6) internal successors, (1013), 5 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:34,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:07:34,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:34,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1117429539, now seen corresponding path program 1 times [2023-08-30 15:07:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790912308] [2023-08-30 15:07:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:34,705 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 15:07:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790912308] [2023-08-30 15:07:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790912308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:07:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308083171] [2023-08-30 15:07:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:34,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 396 [2023-08-30 15:07:34,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:34,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:34,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 396 [2023-08-30 15:07:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:39,899 INFO L130 PetriNetUnfolder]: 72857/101873 cut-off events. [2023-08-30 15:07:39,899 INFO L131 PetriNetUnfolder]: For 16798/16798 co-relation queries the response was YES. [2023-08-30 15:07:40,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217868 conditions, 101873 events. 72857/101873 cut-off events. For 16798/16798 co-relation queries the response was YES. Maximal size of possible extension queue 3054. Compared 719594 event pairs, 14989 based on Foata normal form. 2460/90230 useless extension candidates. Maximal degree in co-relation 217862. Up to 78447 conditions per place. [2023-08-30 15:07:40,736 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 96 selfloop transitions, 3 changer transitions 0/130 dead transitions. [2023-08-30 15:07:40,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 130 transitions, 548 flow [2023-08-30 15:07:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-30 15:07:40,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942760942760943 [2023-08-30 15:07:40,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-30 15:07:40,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-30 15:07:40,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:40,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-30 15:07:40,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:40,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:40,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:40,745 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 240 flow. Second operand 3 states and 706 transitions. [2023-08-30 15:07:40,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 130 transitions, 548 flow [2023-08-30 15:07:40,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 130 transitions, 536 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:07:40,750 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 258 flow [2023-08-30 15:07:40,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2023-08-30 15:07:40,751 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -4 predicate places. [2023-08-30 15:07:40,752 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 258 flow [2023-08-30 15:07:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:40,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:40,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:07:40,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:40,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash 215880153, now seen corresponding path program 1 times [2023-08-30 15:07:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734762700] [2023-08-30 15:07:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:40,801 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 15:07:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734762700] [2023-08-30 15:07:40,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734762700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:40,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:40,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:07:40,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786169808] [2023-08-30 15:07:40,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:40,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:40,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:40,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:40,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 396 [2023-08-30 15:07:40,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:40,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:40,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 396 [2023-08-30 15:07:40,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:44,845 INFO L130 PetriNetUnfolder]: 54845/76524 cut-off events. [2023-08-30 15:07:44,845 INFO L131 PetriNetUnfolder]: For 20062/20062 co-relation queries the response was YES. [2023-08-30 15:07:45,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174190 conditions, 76524 events. 54845/76524 cut-off events. For 20062/20062 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 510874 event pairs, 11626 based on Foata normal form. 1640/67931 useless extension candidates. Maximal degree in co-relation 174183. Up to 60520 conditions per place. [2023-08-30 15:07:45,260 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 98 selfloop transitions, 3 changer transitions 0/132 dead transitions. [2023-08-30 15:07:45,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 132 transitions, 578 flow [2023-08-30 15:07:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-08-30 15:07:45,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5951178451178452 [2023-08-30 15:07:45,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-08-30 15:07:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-08-30 15:07:45,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:45,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-08-30 15:07:45,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:45,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:45,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:45,267 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 258 flow. Second operand 3 states and 707 transitions. [2023-08-30 15:07:45,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 132 transitions, 578 flow [2023-08-30 15:07:45,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:45,284 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 280 flow [2023-08-30 15:07:45,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2023-08-30 15:07:45,285 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -2 predicate places. [2023-08-30 15:07:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 280 flow [2023-08-30 15:07:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:45,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:45,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:45,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:07:45,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:45,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1230357125, now seen corresponding path program 1 times [2023-08-30 15:07:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:45,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954456212] [2023-08-30 15:07:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:45,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:45,326 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 15:07:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:45,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954456212] [2023-08-30 15:07:45,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954456212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:45,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:07:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385557482] [2023-08-30 15:07:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:45,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:45,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 396 [2023-08-30 15:07:45,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:45,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:45,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 396 [2023-08-30 15:07:45,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:49,143 INFO L130 PetriNetUnfolder]: 47095/65308 cut-off events. [2023-08-30 15:07:49,143 INFO L131 PetriNetUnfolder]: For 24112/24112 co-relation queries the response was YES. [2023-08-30 15:07:49,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155532 conditions, 65308 events. 47095/65308 cut-off events. For 24112/24112 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 427418 event pairs, 41877 based on Foata normal form. 0/57267 useless extension candidates. Maximal degree in co-relation 155524. Up to 60584 conditions per place. [2023-08-30 15:07:49,513 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 62 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-08-30 15:07:49,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 398 flow [2023-08-30 15:07:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:49,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-30 15:07:49,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-08-30 15:07:49,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-30 15:07:49,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-30 15:07:49,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:49,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-30 15:07:49,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:49,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:49,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:49,520 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 280 flow. Second operand 3 states and 666 transitions. [2023-08-30 15:07:49,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 398 flow [2023-08-30 15:07:49,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:49,539 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 271 flow [2023-08-30 15:07:49,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2023-08-30 15:07:49,540 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -3 predicate places. [2023-08-30 15:07:49,540 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 271 flow [2023-08-30 15:07:49,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:49,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:49,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:49,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:07:49,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:49,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1230357124, now seen corresponding path program 1 times [2023-08-30 15:07:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000739709] [2023-08-30 15:07:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:49,635 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 15:07:49,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000739709] [2023-08-30 15:07:49,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000739709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:49,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:49,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:07:49,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205002682] [2023-08-30 15:07:49,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:07:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:49,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:07:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:07:49,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 396 [2023-08-30 15:07:49,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:49,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:49,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 396 [2023-08-30 15:07:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:56,532 INFO L130 PetriNetUnfolder]: 85483/120494 cut-off events. [2023-08-30 15:07:56,532 INFO L131 PetriNetUnfolder]: For 34998/34998 co-relation queries the response was YES. [2023-08-30 15:07:56,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277549 conditions, 120494 events. 85483/120494 cut-off events. For 34998/34998 co-relation queries the response was YES. Maximal size of possible extension queue 3517. Compared 877804 event pairs, 14099 based on Foata normal form. 570/108347 useless extension candidates. Maximal degree in co-relation 277541. Up to 55313 conditions per place. [2023-08-30 15:07:57,483 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 225 selfloop transitions, 7 changer transitions 0/261 dead transitions. [2023-08-30 15:07:57,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 261 transitions, 1261 flow [2023-08-30 15:07:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:07:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:07:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1393 transitions. [2023-08-30 15:07:57,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862794612794613 [2023-08-30 15:07:57,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1393 transitions. [2023-08-30 15:07:57,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1393 transitions. [2023-08-30 15:07:57,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:57,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1393 transitions. [2023-08-30 15:07:57,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.16666666666666) internal successors, (1393), 6 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:57,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:57,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:57,494 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 271 flow. Second operand 6 states and 1393 transitions. [2023-08-30 15:07:57,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 261 transitions, 1261 flow [2023-08-30 15:07:57,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 261 transitions, 1260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:57,525 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 300 flow [2023-08-30 15:07:57,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2023-08-30 15:07:57,526 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2023-08-30 15:07:57,526 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 300 flow [2023-08-30 15:07:57,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:57,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:57,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 15:07:57,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:07:57,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash 15487186, now seen corresponding path program 1 times [2023-08-30 15:07:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117166453] [2023-08-30 15:07:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:57,607 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 15:07:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117166453] [2023-08-30 15:07:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117166453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:57,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:07:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565534182] [2023-08-30 15:07:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:07:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:07:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:07:57,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 396 [2023-08-30 15:07:57,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:07:57,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:57,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 396 [2023-08-30 15:07:57,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:06,192 INFO L130 PetriNetUnfolder]: 96687/134663 cut-off events. [2023-08-30 15:08:06,192 INFO L131 PetriNetUnfolder]: For 52472/52472 co-relation queries the response was YES. [2023-08-30 15:08:06,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320573 conditions, 134663 events. 96687/134663 cut-off events. For 52472/52472 co-relation queries the response was YES. Maximal size of possible extension queue 3923. Compared 969706 event pairs, 8871 based on Foata normal form. 1900/120624 useless extension candidates. Maximal degree in co-relation 320563. Up to 45667 conditions per place. [2023-08-30 15:08:07,352 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 252 selfloop transitions, 15 changer transitions 0/297 dead transitions. [2023-08-30 15:08:07,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 297 transitions, 1484 flow [2023-08-30 15:08:07,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:08:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:08:07,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1619 transitions. [2023-08-30 15:08:07,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584054834054834 [2023-08-30 15:08:07,356 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1619 transitions. [2023-08-30 15:08:07,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1619 transitions. [2023-08-30 15:08:07,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:07,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1619 transitions. [2023-08-30 15:08:07,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.28571428571428) internal successors, (1619), 7 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:07,367 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 300 flow. Second operand 7 states and 1619 transitions. [2023-08-30 15:08:07,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 297 transitions, 1484 flow [2023-08-30 15:08:09,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 297 transitions, 1469 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:09,126 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 368 flow [2023-08-30 15:08:09,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2023-08-30 15:08:09,127 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2023-08-30 15:08:09,127 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 368 flow [2023-08-30 15:08:09,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:09,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:09,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:08:09,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:08:09,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1204637147, now seen corresponding path program 1 times [2023-08-30 15:08:09,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:09,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949072427] [2023-08-30 15:08:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:09,207 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 15:08:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949072427] [2023-08-30 15:08:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949072427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:09,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:08:09,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229231651] [2023-08-30 15:08:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:09,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:08:09,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:08:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:08:09,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 396 [2023-08-30 15:08:09,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:09,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:09,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 396 [2023-08-30 15:08:09,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:16,250 INFO L130 PetriNetUnfolder]: 78959/111860 cut-off events. [2023-08-30 15:08:16,250 INFO L131 PetriNetUnfolder]: For 76521/77487 co-relation queries the response was YES. [2023-08-30 15:08:16,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279642 conditions, 111860 events. 78959/111860 cut-off events. For 76521/77487 co-relation queries the response was YES. Maximal size of possible extension queue 3464. Compared 812464 event pairs, 58790 based on Foata normal form. 1204/97833 useless extension candidates. Maximal degree in co-relation 279630. Up to 92207 conditions per place. [2023-08-30 15:08:17,346 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 102 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2023-08-30 15:08:17,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 138 transitions, 686 flow [2023-08-30 15:08:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:08:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:08:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-30 15:08:17,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-30 15:08:17,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-30 15:08:17,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-30 15:08:17,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:17,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-30 15:08:17,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:17,353 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 368 flow. Second operand 3 states and 693 transitions. [2023-08-30 15:08:17,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 138 transitions, 686 flow [2023-08-30 15:08:20,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 138 transitions, 664 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-30 15:08:20,626 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 343 flow [2023-08-30 15:08:20,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2023-08-30 15:08:20,627 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2023-08-30 15:08:20,627 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 343 flow [2023-08-30 15:08:20,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:20,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:20,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:20,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 15:08:20,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:08:20,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:20,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1310937781, now seen corresponding path program 1 times [2023-08-30 15:08:20,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:20,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080412172] [2023-08-30 15:08:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:20,766 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 15:08:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:20,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080412172] [2023-08-30 15:08:20,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080412172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:20,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:20,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:08:20,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066642663] [2023-08-30 15:08:20,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:20,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:08:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:08:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:08:20,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 396 [2023-08-30 15:08:20,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:20,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:20,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 396 [2023-08-30 15:08:20,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:27,217 INFO L130 PetriNetUnfolder]: 70947/102677 cut-off events. [2023-08-30 15:08:27,217 INFO L131 PetriNetUnfolder]: For 46840/47980 co-relation queries the response was YES. [2023-08-30 15:08:27,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248629 conditions, 102677 events. 70947/102677 cut-off events. For 46840/47980 co-relation queries the response was YES. Maximal size of possible extension queue 3097. Compared 771698 event pairs, 7196 based on Foata normal form. 4750/94504 useless extension candidates. Maximal degree in co-relation 248617. Up to 38030 conditions per place. [2023-08-30 15:08:27,905 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 248 selfloop transitions, 9 changer transitions 29/317 dead transitions. [2023-08-30 15:08:27,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 317 transitions, 1616 flow [2023-08-30 15:08:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:08:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:08:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1810 transitions. [2023-08-30 15:08:27,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5713383838383839 [2023-08-30 15:08:27,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1810 transitions. [2023-08-30 15:08:27,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1810 transitions. [2023-08-30 15:08:27,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:27,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1810 transitions. [2023-08-30 15:08:27,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 226.25) internal successors, (1810), 8 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:27,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 396.0) internal successors, (3564), 9 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:27,916 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 396.0) internal successors, (3564), 9 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:27,917 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 343 flow. Second operand 8 states and 1810 transitions. [2023-08-30 15:08:27,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 317 transitions, 1616 flow [2023-08-30 15:08:29,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 317 transitions, 1612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:08:29,677 INFO L231 Difference]: Finished difference. Result has 115 places, 95 transitions, 338 flow [2023-08-30 15:08:29,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=338, PETRI_PLACES=115, PETRI_TRANSITIONS=95} [2023-08-30 15:08:29,678 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2023-08-30 15:08:29,678 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 95 transitions, 338 flow [2023-08-30 15:08:29,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:29,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:29,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:29,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 15:08:29,679 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread5Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:08:29,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1030656630, now seen corresponding path program 1 times [2023-08-30 15:08:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312570145] [2023-08-30 15:08:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:29,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:29,881 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 15:08:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312570145] [2023-08-30 15:08:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312570145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:29,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:29,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:08:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408943846] [2023-08-30 15:08:29,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:29,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:08:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:08:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:08:29,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 396 [2023-08-30 15:08:29,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 95 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:29,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:29,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 396 [2023-08-30 15:08:29,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:37,469 INFO L130 PetriNetUnfolder]: 89833/124806 cut-off events. [2023-08-30 15:08:37,469 INFO L131 PetriNetUnfolder]: For 73056/73056 co-relation queries the response was YES. [2023-08-30 15:08:37,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302214 conditions, 124806 events. 89833/124806 cut-off events. For 73056/73056 co-relation queries the response was YES. Maximal size of possible extension queue 4009. Compared 892948 event pairs, 8582 based on Foata normal form. 0/110943 useless extension candidates. Maximal degree in co-relation 302202. Up to 42607 conditions per place. [2023-08-30 15:08:38,327 INFO L137 encePairwiseOnDemand]: 387/396 looper letters, 229 selfloop transitions, 15 changer transitions 0/277 dead transitions. [2023-08-30 15:08:38,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 277 transitions, 1559 flow [2023-08-30 15:08:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:08:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:08:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1576 transitions. [2023-08-30 15:08:38,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685425685425686 [2023-08-30 15:08:38,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1576 transitions. [2023-08-30 15:08:38,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1576 transitions. [2023-08-30 15:08:38,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:38,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1576 transitions. [2023-08-30 15:08:38,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.14285714285714) internal successors, (1576), 7 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:38,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:38,337 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:38,337 INFO L175 Difference]: Start difference. First operand has 115 places, 95 transitions, 338 flow. Second operand 7 states and 1576 transitions. [2023-08-30 15:08:38,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 277 transitions, 1559 flow [2023-08-30 15:08:38,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 277 transitions, 1528 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 15:08:38,420 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 406 flow [2023-08-30 15:08:38,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2023-08-30 15:08:38,421 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 9 predicate places. [2023-08-30 15:08:38,421 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 406 flow [2023-08-30 15:08:38,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:38,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:38,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:38,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 15:08:38,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread5Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:08:38,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1030656629, now seen corresponding path program 1 times [2023-08-30 15:08:38,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:38,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334395030] [2023-08-30 15:08:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:38,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:38,474 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 15:08:38,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:38,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334395030] [2023-08-30 15:08:38,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334395030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:38,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:38,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:08:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600113591] [2023-08-30 15:08:38,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:08:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:38,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:08:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:08:38,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 396 [2023-08-30 15:08:38,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:38,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:38,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 396 [2023-08-30 15:08:38,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:45,971 INFO L130 PetriNetUnfolder]: 80813/113314 cut-off events. [2023-08-30 15:08:45,971 INFO L131 PetriNetUnfolder]: For 76868/76868 co-relation queries the response was YES. [2023-08-30 15:08:46,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288263 conditions, 113314 events. 80813/113314 cut-off events. For 76868/76868 co-relation queries the response was YES. Maximal size of possible extension queue 3602. Compared 816391 event pairs, 8170 based on Foata normal form. 2472/103433 useless extension candidates. Maximal degree in co-relation 288249. Up to 34671 conditions per place. [2023-08-30 15:08:46,763 INFO L137 encePairwiseOnDemand]: 387/396 looper letters, 227 selfloop transitions, 15 changer transitions 0/275 dead transitions. [2023-08-30 15:08:46,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 275 transitions, 1565 flow [2023-08-30 15:08:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:08:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:08:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1574 transitions. [2023-08-30 15:08:46,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678210678210678 [2023-08-30 15:08:46,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1574 transitions. [2023-08-30 15:08:46,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1574 transitions. [2023-08-30 15:08:46,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:46,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1574 transitions. [2023-08-30 15:08:46,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.85714285714286) internal successors, (1574), 7 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:46,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:46,772 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:46,772 INFO L175 Difference]: Start difference. First operand has 114 places, 104 transitions, 406 flow. Second operand 7 states and 1574 transitions. [2023-08-30 15:08:46,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 275 transitions, 1565 flow [2023-08-30 15:08:48,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 275 transitions, 1551 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 15:08:48,144 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 418 flow [2023-08-30 15:08:48,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2023-08-30 15:08:48,145 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2023-08-30 15:08:48,145 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 418 flow [2023-08-30 15:08:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:48,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:08:48,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:08:48,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 15:08:48,146 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread6Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:08:48,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:08:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1030655513, now seen corresponding path program 1 times [2023-08-30 15:08:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:08:48,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725645744] [2023-08-30 15:08:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:08:48,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:08:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:08:48,209 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 15:08:48,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:08:48,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725645744] [2023-08-30 15:08:48,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725645744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:08:48,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:08:48,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:08:48,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545528122] [2023-08-30 15:08:48,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:08:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:08:48,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:08:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:08:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:08:48,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 396 [2023-08-30 15:08:48,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 418 flow. Second operand has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:48,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:08:48,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 396 [2023-08-30 15:08:48,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:08:58,497 INFO L130 PetriNetUnfolder]: 106895/153766 cut-off events. [2023-08-30 15:08:58,497 INFO L131 PetriNetUnfolder]: For 112096/112096 co-relation queries the response was YES. [2023-08-30 15:08:59,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396666 conditions, 153766 events. 106895/153766 cut-off events. For 112096/112096 co-relation queries the response was YES. Maximal size of possible extension queue 4970. Compared 1196282 event pairs, 13526 based on Foata normal form. 618/137729 useless extension candidates. Maximal degree in co-relation 396651. Up to 59479 conditions per place. [2023-08-30 15:08:59,614 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 203 selfloop transitions, 10 changer transitions 0/249 dead transitions. [2023-08-30 15:08:59,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 249 transitions, 1436 flow [2023-08-30 15:08:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:08:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:08:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1347 transitions. [2023-08-30 15:08:59,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669191919191919 [2023-08-30 15:08:59,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1347 transitions. [2023-08-30 15:08:59,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1347 transitions. [2023-08-30 15:08:59,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:08:59,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1347 transitions. [2023-08-30 15:08:59,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:59,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:59,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:08:59,621 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 418 flow. Second operand 6 states and 1347 transitions. [2023-08-30 15:08:59,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 249 transitions, 1436 flow [2023-08-30 15:09:00,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 249 transitions, 1393 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:09:00,785 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 433 flow [2023-08-30 15:09:00,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=433, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2023-08-30 15:09:00,786 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2023-08-30 15:09:00,786 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 433 flow [2023-08-30 15:09:00,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:00,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:09:00,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:09:00,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 15:09:00,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:09:00,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:09:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1608804888, now seen corresponding path program 1 times [2023-08-30 15:09:00,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:09:00,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538930960] [2023-08-30 15:09:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:09:00,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:09:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:09:00,837 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 15:09:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:09:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538930960] [2023-08-30 15:09:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538930960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:09:00,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:09:00,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:09:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278209377] [2023-08-30 15:09:00,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:09:00,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:09:00,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:09:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:09:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:09:00,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 396 [2023-08-30 15:09:00,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 433 flow. Second operand has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:00,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:09:00,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 396 [2023-08-30 15:09:00,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:09:11,303 INFO L130 PetriNetUnfolder]: 104846/150687 cut-off events. [2023-08-30 15:09:11,303 INFO L131 PetriNetUnfolder]: For 110058/110058 co-relation queries the response was YES. [2023-08-30 15:09:11,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386772 conditions, 150687 events. 104846/150687 cut-off events. For 110058/110058 co-relation queries the response was YES. Maximal size of possible extension queue 4836. Compared 1166948 event pairs, 13320 based on Foata normal form. 618/134976 useless extension candidates. Maximal degree in co-relation 386755. Up to 59479 conditions per place. [2023-08-30 15:09:12,424 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 202 selfloop transitions, 10 changer transitions 0/248 dead transitions. [2023-08-30 15:09:12,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 248 transitions, 1420 flow [2023-08-30 15:09:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:09:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:09:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1346 transitions. [2023-08-30 15:09:12,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664983164983165 [2023-08-30 15:09:12,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1346 transitions. [2023-08-30 15:09:12,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1346 transitions. [2023-08-30 15:09:12,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:09:12,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1346 transitions. [2023-08-30 15:09:12,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.33333333333334) internal successors, (1346), 6 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:12,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:12,430 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:12,431 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 433 flow. Second operand 6 states and 1346 transitions. [2023-08-30 15:09:12,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 248 transitions, 1420 flow [2023-08-30 15:09:15,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 248 transitions, 1411 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 15:09:15,476 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 439 flow [2023-08-30 15:09:15,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2023-08-30 15:09:15,477 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 15 predicate places. [2023-08-30 15:09:15,477 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 439 flow [2023-08-30 15:09:15,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:15,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:09:15,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:09:15,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 15:09:15,478 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread6Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:09:15,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:09:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1616496020, now seen corresponding path program 1 times [2023-08-30 15:09:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:09:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025936230] [2023-08-30 15:09:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:09:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:09:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:09:15,517 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 15:09:15,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:09:15,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025936230] [2023-08-30 15:09:15,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025936230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:09:15,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:09:15,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:09:15,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946289983] [2023-08-30 15:09:15,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:09:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:09:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:09:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:09:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:09:15,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 396 [2023-08-30 15:09:15,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:15,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:09:15,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 396 [2023-08-30 15:09:15,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:09:23,227 INFO L130 PetriNetUnfolder]: 71564/106413 cut-off events. [2023-08-30 15:09:23,227 INFO L131 PetriNetUnfolder]: For 111126/111550 co-relation queries the response was YES. [2023-08-30 15:09:23,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269628 conditions, 106413 events. 71564/106413 cut-off events. For 111126/111550 co-relation queries the response was YES. Maximal size of possible extension queue 3668. Compared 855831 event pairs, 59068 based on Foata normal form. 0/94808 useless extension candidates. Maximal degree in co-relation 269612. Up to 92809 conditions per place. [2023-08-30 15:09:24,026 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 61 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2023-08-30 15:09:24,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 101 transitions, 542 flow [2023-08-30 15:09:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:09:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:09:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-30 15:09:24,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488215488215489 [2023-08-30 15:09:24,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-30 15:09:24,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-30 15:09:24,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:09:24,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-30 15:09:24,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:24,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:24,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:24,031 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 439 flow. Second operand 3 states and 652 transitions. [2023-08-30 15:09:24,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 101 transitions, 542 flow [2023-08-30 15:09:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 101 transitions, 522 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:09:24,458 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 400 flow [2023-08-30 15:09:24,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2023-08-30 15:09:24,459 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2023-08-30 15:09:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 400 flow [2023-08-30 15:09:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:24,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:09:24,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:09:24,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 15:09:24,460 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread6Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:09:24,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:09:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash -360243179, now seen corresponding path program 1 times [2023-08-30 15:09:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:09:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93402141] [2023-08-30 15:09:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:09:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:09:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:09:24,561 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 15:09:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:09:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93402141] [2023-08-30 15:09:24,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93402141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:09:24,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:09:24,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 15:09:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605351029] [2023-08-30 15:09:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:09:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:09:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:09:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:09:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:09:24,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 396 [2023-08-30 15:09:24,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:24,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:09:24,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 396 [2023-08-30 15:09:24,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:09:32,537 INFO L130 PetriNetUnfolder]: 69760/104767 cut-off events. [2023-08-30 15:09:32,538 INFO L131 PetriNetUnfolder]: For 88281/88713 co-relation queries the response was YES. [2023-08-30 15:09:33,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261280 conditions, 104767 events. 69760/104767 cut-off events. For 88281/88713 co-relation queries the response was YES. Maximal size of possible extension queue 3616. Compared 851118 event pairs, 42854 based on Foata normal form. 604/95461 useless extension candidates. Maximal degree in co-relation 261264. Up to 80090 conditions per place. [2023-08-30 15:09:33,880 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 121 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2023-08-30 15:09:33,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 162 transitions, 897 flow [2023-08-30 15:09:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:09:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:09:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 892 transitions. [2023-08-30 15:09:33,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631313131313131 [2023-08-30 15:09:33,882 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 892 transitions. [2023-08-30 15:09:33,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 892 transitions. [2023-08-30 15:09:33,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:09:33,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 892 transitions. [2023-08-30 15:09:33,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:33,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:33,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:33,886 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 400 flow. Second operand 4 states and 892 transitions. [2023-08-30 15:09:33,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 162 transitions, 897 flow [2023-08-30 15:09:37,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 162 transitions, 886 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 15:09:37,382 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 387 flow [2023-08-30 15:09:37,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2023-08-30 15:09:37,382 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2023-08-30 15:09:37,382 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 387 flow [2023-08-30 15:09:37,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:37,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:09:37,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:09:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 15:09:37,383 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread6Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 15:09:37,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:09:37,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1717003059, now seen corresponding path program 1 times [2023-08-30 15:09:37,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:09:37,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637151634] [2023-08-30 15:09:37,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:09:37,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:09:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:09:37,467 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 15:09:37,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:09:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637151634] [2023-08-30 15:09:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637151634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:09:37,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:09:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 15:09:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947022817] [2023-08-30 15:09:37,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:09:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:09:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:09:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:09:37,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:09:37,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 396 [2023-08-30 15:09:37,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:37,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:09:37,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 396 [2023-08-30 15:09:37,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:09:44,117 INFO L130 PetriNetUnfolder]: 64382/96755 cut-off events. [2023-08-30 15:09:44,117 INFO L131 PetriNetUnfolder]: For 74695/75107 co-relation queries the response was YES. [2023-08-30 15:09:44,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238412 conditions, 96755 events. 64382/96755 cut-off events. For 74695/75107 co-relation queries the response was YES. Maximal size of possible extension queue 3177. Compared 771066 event pairs, 2762 based on Foata normal form. 4532/93442 useless extension candidates. Maximal degree in co-relation 238396. Up to 33988 conditions per place. [2023-08-30 15:09:44,664 INFO L137 encePairwiseOnDemand]: 386/396 looper letters, 0 selfloop transitions, 0 changer transitions 426/426 dead transitions. [2023-08-30 15:09:44,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 426 transitions, 2486 flow [2023-08-30 15:09:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:09:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:09:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2628 transitions. [2023-08-30 15:09:44,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2023-08-30 15:09:44,668 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2628 transitions. [2023-08-30 15:09:44,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2628 transitions. [2023-08-30 15:09:44,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:09:44,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2628 transitions. [2023-08-30 15:09:44,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 219.0) internal successors, (2628), 12 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:44,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 396.0) internal successors, (5148), 13 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:44,676 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 396.0) internal successors, (5148), 13 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:44,676 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 387 flow. Second operand 12 states and 2628 transitions. [2023-08-30 15:09:44,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 426 transitions, 2486 flow [2023-08-30 15:09:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 426 transitions, 2480 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 15:09:46,928 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2023-08-30 15:09:46,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2023-08-30 15:09:46,929 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 17 predicate places. [2023-08-30 15:09:46,929 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2023-08-30 15:09:46,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:09:46,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2023-08-30 15:09:46,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 42 remaining) [2023-08-30 15:09:46,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2023-08-30 15:09:46,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2023-08-30 15:09:46,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2023-08-30 15:09:46,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2023-08-30 15:09:46,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2023-08-30 15:09:46,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2023-08-30 15:09:46,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2023-08-30 15:09:46,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2023-08-30 15:09:46,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 42 remaining) [2023-08-30 15:09:46,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 42 remaining) [2023-08-30 15:09:46,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 42 remaining) [2023-08-30 15:09:46,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 42 remaining) [2023-08-30 15:09:46,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2023-08-30 15:09:46,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2023-08-30 15:09:46,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2023-08-30 15:09:46,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2023-08-30 15:09:46,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2023-08-30 15:09:46,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2023-08-30 15:09:46,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 42 remaining) [2023-08-30 15:09:46,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 42 remaining) [2023-08-30 15:09:46,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 42 remaining) [2023-08-30 15:09:46,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 42 remaining) [2023-08-30 15:09:46,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 42 remaining) [2023-08-30 15:09:46,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 42 remaining) [2023-08-30 15:09:46,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2023-08-30 15:09:46,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2023-08-30 15:09:46,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2023-08-30 15:09:46,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2023-08-30 15:09:46,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2023-08-30 15:09:46,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2023-08-30 15:09:46,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Thread1of1ForFork3Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 42 remaining) [2023-08-30 15:09:46,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Thread1of1ForFork3Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 42 remaining) [2023-08-30 15:09:46,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2023-08-30 15:09:46,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2023-08-30 15:09:46,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2023-08-30 15:09:46,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread5Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2023-08-30 15:09:46,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2023-08-30 15:09:46,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2023-08-30 15:09:46,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2023-08-30 15:09:46,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread6Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2023-08-30 15:09:46,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 15:09:46,941 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:09:46,946 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:09:46,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:09:46,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:09:46 BasicIcfg [2023-08-30 15:09:46,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:09:46,949 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:09:46,949 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:09:46,950 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:09:46,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:06:39" (3/4) ... [2023-08-30 15:09:46,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:09:46,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:09:46,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:09:46,956 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:09:46,957 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-08-30 15:09:46,957 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread5 [2023-08-30 15:09:46,957 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread6 [2023-08-30 15:09:46,961 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 15:09:46,961 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:09:46,961 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:09:46,961 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:09:46,989 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:09:46,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:09:46,990 INFO L158 Benchmark]: Toolchain (without parser) took 188719.65ms. Allocated memory was 75.5MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 50.3MB in the beginning and 14.2GB in the end (delta: -14.1GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2023-08-30 15:09:46,990 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:09:46,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.63ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 55.2MB in the end (delta: -5.1MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-08-30 15:09:46,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.61ms. Allocated memory is still 75.5MB. Free memory was 55.2MB in the beginning and 52.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:09:46,991 INFO L158 Benchmark]: Boogie Preprocessor took 25.22ms. Allocated memory is still 75.5MB. Free memory was 52.9MB in the beginning and 51.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:09:46,992 INFO L158 Benchmark]: RCFGBuilder took 703.43ms. Allocated memory is still 75.5MB. Free memory was 51.2MB in the beginning and 50.4MB in the end (delta: 772.9kB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-08-30 15:09:46,992 INFO L158 Benchmark]: TraceAbstraction took 187676.17ms. Allocated memory was 75.5MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 49.5MB in the beginning and 14.2GB in the end (delta: -14.1GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2023-08-30 15:09:46,992 INFO L158 Benchmark]: Witness Printer took 40.41ms. Allocated memory is still 16.1GB. Free memory was 14.2GB in the beginning and 14.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 15:09:46,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.63ms. Allocated memory is still 75.5MB. Free memory was 50.1MB in the beginning and 55.2MB in the end (delta: -5.1MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.61ms. Allocated memory is still 75.5MB. Free memory was 55.2MB in the beginning and 52.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.22ms. Allocated memory is still 75.5MB. Free memory was 52.9MB in the beginning and 51.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 703.43ms. Allocated memory is still 75.5MB. Free memory was 51.2MB in the beginning and 50.4MB in the end (delta: 772.9kB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 187676.17ms. Allocated memory was 75.5MB in the beginning and 16.1GB in the end (delta: 16.0GB). Free memory was 49.5MB in the beginning and 14.2GB in the end (delta: -14.1GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 40.41ms. Allocated memory is still 16.1GB. Free memory was 14.2GB in the beginning and 14.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 218 PlacesBefore, 105 PlacesAfterwards, 206 TransitionsBefore, 92 TransitionsAfterwards, 9812 CoEnabledTransitionPairs, 7 FixpointIterations, 76 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 142 TotalNumberOfCompositions, 68765 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33521, independent: 32645, independent conditional: 0, independent unconditional: 32645, dependent: 876, dependent conditional: 0, dependent unconditional: 876, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5447, independent: 5352, independent conditional: 0, independent unconditional: 5352, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 33521, independent: 27293, independent conditional: 0, independent unconditional: 27293, dependent: 781, dependent conditional: 0, dependent unconditional: 781, unknown: 5447, unknown conditional: 0, unknown unconditional: 5447] , Statistics on independence cache: Total cache size (in pairs): 1748, Positive cache size: 1690, Positive conditional cache size: 0, Positive unconditional cache size: 1690, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 128]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 128]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 139]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 139]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 153]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 153]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 347 locations, 42 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 187.4s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 181.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2549 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2336 mSDsluCounter, 226 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4072 IncrementalHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 81 mSDtfsCounter, 4072 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=439occurred in iteration=15, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 1041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:09:47,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE