./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8 --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 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:14:54,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:14:54,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:14:54,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:14:54,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:14:54,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:14:54,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:14:54,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:14:54,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:14:54,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:14:54,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:14:54,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:14:54,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:14:54,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:14:54,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:14:54,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:14:54,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:14:54,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:14:54,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:14:54,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:14:54,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:14:54,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:14:54,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:14:54,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:14:54,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:14:54,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:14:54,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:14:54,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:14:54,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:14:54,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:14:54,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:14:54,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:14:54,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:14:54,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:14:54,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:14:54,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:14:54,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:14:54,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:14:54,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:14:54,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:14:54,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:14:54,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:14:54,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:14:54,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:14:54,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:14:54,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:14:54,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:14:54,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:14:54,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:14:54,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:14:54,487 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:14:54,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:14:54,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:14:54,488 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:14:54,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:14:54,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:14:54,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:14:54,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:14:54,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:14:54,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:14:54,490 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:14:54,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:14:54,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:14:54,490 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:14:54,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:14:54,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:14:54,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:14:54,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:14:54,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:14:54,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:14:54,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:14:54,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:14:54,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:14:54,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:14:54,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:14:54,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:14:54,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:14:54,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b51332425cd14048935a20a73abea0065b1633fac56d6d6be511ab67585236 [2022-11-16 11:14:54,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:14:54,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:14:54,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:14:54,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:14:54,777 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:14:54,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-16 11:14:54,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/data/a7ce8a64d/99be7eccc0a64e6eb67f755a95d915f6/FLAG4a9d826d5 [2022-11-16 11:14:55,379 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:14:55,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2022-11-16 11:14:55,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/data/a7ce8a64d/99be7eccc0a64e6eb67f755a95d915f6/FLAG4a9d826d5 [2022-11-16 11:14:55,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/data/a7ce8a64d/99be7eccc0a64e6eb67f755a95d915f6 [2022-11-16 11:14:55,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:14:55,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:14:55,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:14:55,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:14:55,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:14:55,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:14:55" (1/1) ... [2022-11-16 11:14:55,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ae2ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:55, skipping insertion in model container [2022-11-16 11:14:55,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:14:55" (1/1) ... [2022-11-16 11:14:55,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:14:55,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:14:55,987 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-16 11:14:55,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:14:55,998 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:14:56,032 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[4722,4735] [2022-11-16 11:14:56,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:14:56,049 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:14:56,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56 WrapperNode [2022-11-16 11:14:56,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:14:56,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:14:56,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:14:56,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:14:56,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,098 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 269 [2022-11-16 11:14:56,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:14:56,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:14:56,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:14:56,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:14:56,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,125 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:14:56,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:14:56,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:14:56,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:14:56,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (1/1) ... [2022-11-16 11:14:56,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:14:56,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:56,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:14:56,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947d0f7b-16fa-4f89-9c27-c629d05f50b1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:14:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:14:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:14:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:14:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:14:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:14:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:14:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:14:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:14:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:14:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:14:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:14:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:14:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:14:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-16 11:14:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-16 11:14:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-16 11:14:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-16 11:14:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:14:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:14:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:14:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:14:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:14:56,226 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:14:56,357 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:14:56,359 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:14:56,836 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:14:56,976 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:14:56,977 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:14:56,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:14:56 BoogieIcfgContainer [2022-11-16 11:14:56,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:14:56,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:14:56,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:14:56,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:14:56,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:14:55" (1/3) ... [2022-11-16 11:14:56,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3012af4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:14:56, skipping insertion in model container [2022-11-16 11:14:56,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:56" (2/3) ... [2022-11-16 11:14:56,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3012af4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:14:56, skipping insertion in model container [2022-11-16 11:14:56,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:14:56" (3/3) ... [2022-11-16 11:14:56,991 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2022-11-16 11:14:57,000 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:14:57,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:14:57,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-16 11:14:57,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:14:57,139 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-11-16 11:14:57,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 250 transitions, 572 flow [2022-11-16 11:14:57,365 INFO L130 PetriNetUnfolder]: 8/222 cut-off events. [2022-11-16 11:14:57,365 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 11:14:57,375 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 341 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2022-11-16 11:14:57,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 250 transitions, 572 flow [2022-11-16 11:14:57,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 203 transitions, 451 flow [2022-11-16 11:14:57,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:14:57,423 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;@43153dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:14:57,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-11-16 11:14:57,480 INFO L130 PetriNetUnfolder]: 3/107 cut-off events. [2022-11-16 11:14:57,480 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:14:57,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:57,482 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:57,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:14:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1235103673, now seen corresponding path program 1 times [2022-11-16 11:14:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:57,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14653138] [2022-11-16 11:14:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:58,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14653138] [2022-11-16 11:14:58,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14653138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:58,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:58,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:14:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514986769] [2022-11-16 11:14:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:58,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:14:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:58,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:14:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:14:58,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 254 [2022-11-16 11:14:58,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 171.75) internal successors, (2061), 12 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:58,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:58,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 254 [2022-11-16 11:14:58,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:07,803 INFO L130 PetriNetUnfolder]: 25565/45186 cut-off events. [2022-11-16 11:15:07,803 INFO L131 PetriNetUnfolder]: For 9251/9251 co-relation queries the response was YES. [2022-11-16 11:15:08,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88875 conditions, 45186 events. 25565/45186 cut-off events. For 9251/9251 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 408398 event pairs, 836 based on Foata normal form. 199/34129 useless extension candidates. Maximal degree in co-relation 87760. Up to 8998 conditions per place. [2022-11-16 11:15:08,355 INFO L137 encePairwiseOnDemand]: 226/254 looper letters, 428 selfloop transitions, 62 changer transitions 1/626 dead transitions. [2022-11-16 11:15:08,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 626 transitions, 2567 flow [2022-11-16 11:15:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:15:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 11:15:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4424 transitions. [2022-11-16 11:15:08,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7572749058541596 [2022-11-16 11:15:08,383 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4424 transitions. [2022-11-16 11:15:08,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4424 transitions. [2022-11-16 11:15:08,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:08,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4424 transitions. [2022-11-16 11:15:08,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 192.34782608695653) internal successors, (4424), 23 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:08,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 254.0) internal successors, (6096), 24 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:08,425 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 254.0) internal successors, (6096), 24 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:08,427 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 451 flow. Second operand 23 states and 4424 transitions. [2022-11-16 11:15:08,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 626 transitions, 2567 flow [2022-11-16 11:15:08,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 626 transitions, 2355 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-16 11:15:08,490 INFO L231 Difference]: Finished difference. Result has 242 places, 250 transitions, 842 flow [2022-11-16 11:15:08,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=842, PETRI_PLACES=242, PETRI_TRANSITIONS=250} [2022-11-16 11:15:08,499 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2022-11-16 11:15:08,499 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 250 transitions, 842 flow [2022-11-16 11:15:08,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 171.75) internal successors, (2061), 12 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:08,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:08,501 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:08,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:15:08,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1235103674, now seen corresponding path program 1 times [2022-11-16 11:15:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235397343] [2022-11-16 11:15:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:08,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:08,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:08,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235397343] [2022-11-16 11:15:08,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235397343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:08,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:08,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:15:08,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912526705] [2022-11-16 11:15:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:15:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:15:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:15:08,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 254 [2022-11-16 11:15:08,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 250 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:08,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:08,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 254 [2022-11-16 11:15:08,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:13,188 INFO L130 PetriNetUnfolder]: 12562/23841 cut-off events. [2022-11-16 11:15:13,188 INFO L131 PetriNetUnfolder]: For 50619/50667 co-relation queries the response was YES. [2022-11-16 11:15:13,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59428 conditions, 23841 events. 12562/23841 cut-off events. For 50619/50667 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 218843 event pairs, 6668 based on Foata normal form. 473/21346 useless extension candidates. Maximal degree in co-relation 58300. Up to 11419 conditions per place. [2022-11-16 11:15:13,504 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 111 selfloop transitions, 15 changer transitions 0/278 dead transitions. [2022-11-16 11:15:13,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 278 transitions, 1227 flow [2022-11-16 11:15:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1023 transitions. [2022-11-16 11:15:13,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.805511811023622 [2022-11-16 11:15:13,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1023 transitions. [2022-11-16 11:15:13,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1023 transitions. [2022-11-16 11:15:13,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:13,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1023 transitions. [2022-11-16 11:15:13,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.6) internal successors, (1023), 5 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,517 INFO L175 Difference]: Start difference. First operand has 242 places, 250 transitions, 842 flow. Second operand 5 states and 1023 transitions. [2022-11-16 11:15:13,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 278 transitions, 1227 flow [2022-11-16 11:15:13,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 278 transitions, 1223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:15:13,995 INFO L231 Difference]: Finished difference. Result has 242 places, 247 transitions, 850 flow [2022-11-16 11:15:13,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=850, PETRI_PLACES=242, PETRI_TRANSITIONS=247} [2022-11-16 11:15:13,996 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 27 predicate places. [2022-11-16 11:15:13,996 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 247 transitions, 850 flow [2022-11-16 11:15:13,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.6) internal successors, (963), 5 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:13,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:13,998 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:13,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:15:13,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:13,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:13,999 INFO L85 PathProgramCache]: Analyzing trace with hash -329935554, now seen corresponding path program 1 times [2022-11-16 11:15:13,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:13,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529853493] [2022-11-16 11:15:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:14,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:14,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:14,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529853493] [2022-11-16 11:15:14,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529853493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:14,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:14,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:15:14,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941424007] [2022-11-16 11:15:14,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:15:14,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:14,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:15:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:15:14,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 254 [2022-11-16 11:15:14,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 247 transitions, 850 flow. Second operand has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:14,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:14,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 254 [2022-11-16 11:15:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:17,420 INFO L130 PetriNetUnfolder]: 10642/20770 cut-off events. [2022-11-16 11:15:17,421 INFO L131 PetriNetUnfolder]: For 46921/46979 co-relation queries the response was YES. [2022-11-16 11:15:17,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51857 conditions, 20770 events. 10642/20770 cut-off events. For 46921/46979 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 190945 event pairs, 4679 based on Foata normal form. 626/18681 useless extension candidates. Maximal degree in co-relation 50850. Up to 8433 conditions per place. [2022-11-16 11:15:17,683 INFO L137 encePairwiseOnDemand]: 246/254 looper letters, 114 selfloop transitions, 9 changer transitions 0/275 dead transitions. [2022-11-16 11:15:17,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 275 transitions, 1229 flow [2022-11-16 11:15:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:17,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1022 transitions. [2022-11-16 11:15:17,687 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8047244094488188 [2022-11-16 11:15:17,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1022 transitions. [2022-11-16 11:15:17,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1022 transitions. [2022-11-16 11:15:17,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:17,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1022 transitions. [2022-11-16 11:15:17,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:17,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:17,694 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:17,695 INFO L175 Difference]: Start difference. First operand has 242 places, 247 transitions, 850 flow. Second operand 5 states and 1022 transitions. [2022-11-16 11:15:17,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 275 transitions, 1229 flow [2022-11-16 11:15:17,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 275 transitions, 1192 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:15:17,981 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 815 flow [2022-11-16 11:15:17,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=815, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2022-11-16 11:15:17,983 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 25 predicate places. [2022-11-16 11:15:17,983 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 815 flow [2022-11-16 11:15:17,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.2) internal successors, (966), 5 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:17,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:17,984 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:17,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:15:17,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread5Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2133651986, now seen corresponding path program 1 times [2022-11-16 11:15:17,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:17,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826206852] [2022-11-16 11:15:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:18,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:18,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826206852] [2022-11-16 11:15:18,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826206852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:18,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:18,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:15:18,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543787166] [2022-11-16 11:15:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:18,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:15:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:15:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:15:18,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 254 [2022-11-16 11:15:18,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:18,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:18,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 254 [2022-11-16 11:15:18,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:23,185 INFO L130 PetriNetUnfolder]: 15683/29094 cut-off events. [2022-11-16 11:15:23,185 INFO L131 PetriNetUnfolder]: For 68852/71138 co-relation queries the response was YES. [2022-11-16 11:15:23,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72719 conditions, 29094 events. 15683/29094 cut-off events. For 68852/71138 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 271589 event pairs, 550 based on Foata normal form. 720/25807 useless extension candidates. Maximal degree in co-relation 66093. Up to 8395 conditions per place. [2022-11-16 11:15:23,522 INFO L137 encePairwiseOnDemand]: 236/254 looper letters, 285 selfloop transitions, 55 changer transitions 0/497 dead transitions. [2022-11-16 11:15:23,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 497 transitions, 2607 flow [2022-11-16 11:15:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:15:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:15:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2291 transitions. [2022-11-16 11:15:23,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8199713672154617 [2022-11-16 11:15:23,531 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2291 transitions. [2022-11-16 11:15:23,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2291 transitions. [2022-11-16 11:15:23,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:23,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2291 transitions. [2022-11-16 11:15:23,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 208.27272727272728) internal successors, (2291), 11 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,553 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,554 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 815 flow. Second operand 11 states and 2291 transitions. [2022-11-16 11:15:23,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 497 transitions, 2607 flow [2022-11-16 11:15:23,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 497 transitions, 2589 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:15:23,745 INFO L231 Difference]: Finished difference. Result has 251 places, 271 transitions, 1152 flow [2022-11-16 11:15:23,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1152, PETRI_PLACES=251, PETRI_TRANSITIONS=271} [2022-11-16 11:15:23,746 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 36 predicate places. [2022-11-16 11:15:23,746 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 271 transitions, 1152 flow [2022-11-16 11:15:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.14285714285714) internal successors, (1324), 7 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:23,747 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:23,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:15:23,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1562090604, now seen corresponding path program 1 times [2022-11-16 11:15:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:23,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284829940] [2022-11-16 11:15:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:23,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:23,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284829940] [2022-11-16 11:15:23,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284829940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:23,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:23,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:15:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150645601] [2022-11-16 11:15:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:15:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:15:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:15:23,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 254 [2022-11-16 11:15:23,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 271 transitions, 1152 flow. Second operand has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:23,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:23,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 254 [2022-11-16 11:15:23,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:31,731 INFO L130 PetriNetUnfolder]: 23847/44079 cut-off events. [2022-11-16 11:15:31,732 INFO L131 PetriNetUnfolder]: For 104485/106346 co-relation queries the response was YES. [2022-11-16 11:15:32,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118069 conditions, 44079 events. 23847/44079 cut-off events. For 104485/106346 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 421045 event pairs, 3074 based on Foata normal form. 647/39639 useless extension candidates. Maximal degree in co-relation 116930. Up to 15838 conditions per place. [2022-11-16 11:15:32,199 INFO L137 encePairwiseOnDemand]: 238/254 looper letters, 232 selfloop transitions, 90 changer transitions 0/463 dead transitions. [2022-11-16 11:15:32,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 463 transitions, 2803 flow [2022-11-16 11:15:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:15:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:15:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2150 transitions. [2022-11-16 11:15:32,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7695060844667144 [2022-11-16 11:15:32,207 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2150 transitions. [2022-11-16 11:15:32,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2150 transitions. [2022-11-16 11:15:32,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:32,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2150 transitions. [2022-11-16 11:15:32,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.45454545454547) internal successors, (2150), 11 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:32,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:32,220 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 254.0) internal successors, (3048), 12 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:32,221 INFO L175 Difference]: Start difference. First operand has 251 places, 271 transitions, 1152 flow. Second operand 11 states and 2150 transitions. [2022-11-16 11:15:32,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 463 transitions, 2803 flow [2022-11-16 11:15:33,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 463 transitions, 2791 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:15:33,021 INFO L231 Difference]: Finished difference. Result has 264 places, 305 transitions, 1772 flow [2022-11-16 11:15:33,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=264, PETRI_TRANSITIONS=305} [2022-11-16 11:15:33,022 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 49 predicate places. [2022-11-16 11:15:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 305 transitions, 1772 flow [2022-11-16 11:15:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.375) internal successors, (1411), 8 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:33,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:33,023 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:33,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:15:33,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash -182643856, now seen corresponding path program 1 times [2022-11-16 11:15:33,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:33,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038999320] [2022-11-16 11:15:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:33,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038999320] [2022-11-16 11:15:33,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038999320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:33,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:33,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:15:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678005988] [2022-11-16 11:15:33,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:33,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:15:33,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:15:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:15:33,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 254 [2022-11-16 11:15:33,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 305 transitions, 1772 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) [2022-11-16 11:15:33,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:33,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 254 [2022-11-16 11:15:33,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:37,798 INFO L130 PetriNetUnfolder]: 11150/23561 cut-off events. [2022-11-16 11:15:37,798 INFO L131 PetriNetUnfolder]: For 85292/87823 co-relation queries the response was YES. [2022-11-16 11:15:37,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65827 conditions, 23561 events. 11150/23561 cut-off events. For 85292/87823 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 230081 event pairs, 5968 based on Foata normal form. 625/21686 useless extension candidates. Maximal degree in co-relation 65001. Up to 12777 conditions per place. [2022-11-16 11:15:38,399 INFO L137 encePairwiseOnDemand]: 247/254 looper letters, 191 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2022-11-16 11:15:38,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 367 transitions, 2580 flow [2022-11-16 11:15:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1080 transitions. [2022-11-16 11:15:38,402 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503937007874016 [2022-11-16 11:15:38,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1080 transitions. [2022-11-16 11:15:38,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1080 transitions. [2022-11-16 11:15:38,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:38,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1080 transitions. [2022-11-16 11:15:38,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:38,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:38,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:38,410 INFO L175 Difference]: Start difference. First operand has 264 places, 305 transitions, 1772 flow. Second operand 5 states and 1080 transitions. [2022-11-16 11:15:38,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 367 transitions, 2580 flow [2022-11-16 11:15:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 367 transitions, 2525 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-16 11:15:38,785 INFO L231 Difference]: Finished difference. Result has 261 places, 289 transitions, 1593 flow [2022-11-16 11:15:38,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1593, PETRI_PLACES=261, PETRI_TRANSITIONS=289} [2022-11-16 11:15:38,786 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 46 predicate places. [2022-11-16 11:15:38,786 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 289 transitions, 1593 flow [2022-11-16 11:15:38,787 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) [2022-11-16 11:15:38,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:38,787 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:38,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:15:38,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread6Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash -211791089, now seen corresponding path program 1 times [2022-11-16 11:15:38,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:38,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812867986] [2022-11-16 11:15:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:38,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:38,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:38,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812867986] [2022-11-16 11:15:38,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812867986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:38,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:38,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:15:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755607255] [2022-11-16 11:15:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:38,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:15:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:15:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:15:38,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 254 [2022-11-16 11:15:38,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 289 transitions, 1593 flow. Second operand has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:38,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:38,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 254 [2022-11-16 11:15:38,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:44,238 INFO L130 PetriNetUnfolder]: 17040/31397 cut-off events. [2022-11-16 11:15:44,239 INFO L131 PetriNetUnfolder]: For 100291/103555 co-relation queries the response was YES. [2022-11-16 11:15:44,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88563 conditions, 31397 events. 17040/31397 cut-off events. For 100291/103555 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 294219 event pairs, 2251 based on Foata normal form. 760/27414 useless extension candidates. Maximal degree in co-relation 78684. Up to 15872 conditions per place. [2022-11-16 11:15:44,932 INFO L137 encePairwiseOnDemand]: 245/254 looper letters, 129 selfloop transitions, 80 changer transitions 0/376 dead transitions. [2022-11-16 11:15:44,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 376 transitions, 2574 flow [2022-11-16 11:15:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:15:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:15:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1083 transitions. [2022-11-16 11:15:44,935 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852755905511811 [2022-11-16 11:15:44,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1083 transitions. [2022-11-16 11:15:44,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1083 transitions. [2022-11-16 11:15:44,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:44,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1083 transitions. [2022-11-16 11:15:44,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.6) internal successors, (1083), 5 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:44,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:44,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:44,941 INFO L175 Difference]: Start difference. First operand has 261 places, 289 transitions, 1593 flow. Second operand 5 states and 1083 transitions. [2022-11-16 11:15:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 376 transitions, 2574 flow [2022-11-16 11:15:45,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 376 transitions, 2556 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:15:45,447 INFO L231 Difference]: Finished difference. Result has 264 places, 306 transitions, 2085 flow [2022-11-16 11:15:45,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2085, PETRI_PLACES=264, PETRI_TRANSITIONS=306} [2022-11-16 11:15:45,448 INFO L288 CegarLoopForPetriNet]: 215 programPoint places, 49 predicate places. [2022-11-16 11:15:45,450 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 306 transitions, 2085 flow [2022-11-16 11:15:45,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:45,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:45,451 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:45,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:15:45,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-11-16 11:15:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1281063181, now seen corresponding path program 1 times [2022-11-16 11:15:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:45,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675818030] [2022-11-16 11:15:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:45,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:45,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675818030] [2022-11-16 11:15:45,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675818030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:15:45,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:15:45,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:15:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172987900] [2022-11-16 11:15:45,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:15:45,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:15:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:15:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:15:45,727 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 254 [2022-11-16 11:15:45,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 306 transitions, 2085 flow. Second operand has 10 states, 10 states have (on average 172.6) internal successors, (1726), 10 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:45,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:45,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 254 [2022-11-16 11:15:45,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand