./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8 --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 e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 --- 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-2329fc7 [2022-12-13 17:16:14,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:16:14,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:16:14,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:16:14,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:16:14,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:16:14,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:16:14,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:16:14,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:16:14,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:16:14,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:16:14,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:16:14,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:16:14,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:16:14,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:16:14,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:16:14,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:16:14,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:16:14,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:16:14,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:16:14,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:16:14,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:16:14,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:16:14,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:16:14,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:16:14,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:16:14,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:16:14,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:16:14,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:16:14,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:16:14,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:16:14,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:16:14,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:16:14,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:16:14,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:16:14,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:16:14,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:16:14,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:16:14,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:16:14,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:16:14,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:16:14,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:16:14,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:16:14,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:16:14,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:16:14,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:16:14,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:16:14,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:16:14,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:16:14,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:16:14,531 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:16:14,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:16:14,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:16:14,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:16:14,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:16:14,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:16:14,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:16:14,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:16:14,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:16:14,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:16:14,533 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:16:14,533 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:16:14,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:16:14,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:16:14,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:16:14,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:16:14,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:16:14,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:16:14,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:16:14,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:16:14,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:16:14,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:16:14,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:16:14,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:16:14,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:16:14,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:16:14,536 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:16:14,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:16:14,536 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:16:14,537 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e169a35d3412f69777e600b250d6db82170a9573bed36816bd393f67ca1b5302 [2022-12-13 17:16:14,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:16:14,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:16:14,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:16:14,754 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:16:14,754 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:16:14,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/fib_safe-12.i [2022-12-13 17:16:17,326 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:16:17,544 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:16:17,544 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/sv-benchmarks/c/pthread/fib_safe-12.i [2022-12-13 17:16:17,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/data/f517d3b7a/31995e94d73340f1947847955699e1bd/FLAGd924df6c6 [2022-12-13 17:16:17,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/data/f517d3b7a/31995e94d73340f1947847955699e1bd [2022-12-13 17:16:17,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:16:17,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:16:17,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:16:17,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:16:17,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:16:17,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:16:17" (1/1) ... [2022-12-13 17:16:17,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcecc4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:17, skipping insertion in model container [2022-12-13 17:16:17,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:16:17" (1/1) ... [2022-12-13 17:16:17,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:16:17,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:16:18,191 WARN L237 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_0d653ddd-5580-4c1a-bf3a-8149957608e3/sv-benchmarks/c/pthread/fib_safe-12.i[30241,30254] [2022-12-13 17:16:18,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:16:18,224 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:16:18,255 WARN L237 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_0d653ddd-5580-4c1a-bf3a-8149957608e3/sv-benchmarks/c/pthread/fib_safe-12.i[30241,30254] [2022-12-13 17:16:18,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,258 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:16:18,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:16:18,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:16:18,294 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:16:18,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18 WrapperNode [2022-12-13 17:16:18,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:16:18,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:16:18,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:16:18,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:16:18,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,334 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-12-13 17:16:18,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:16:18,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:16:18,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:16:18,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:16:18,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:16:18,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:16:18,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:16:18,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:16:18,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (1/1) ... [2022-12-13 17:16:18,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:16:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:18,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:16:18,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 17:16:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 17:16:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:16:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:16:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:16:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:16:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:16:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:16:18,426 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:16:18,534 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:16:18,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:16:18,689 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:16:18,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:16:18,706 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:16:18,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:16:18 BoogieIcfgContainer [2022-12-13 17:16:18,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:16:18,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:16:18,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:16:18,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:16:18,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:16:17" (1/3) ... [2022-12-13 17:16:18,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc2f36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:16:18, skipping insertion in model container [2022-12-13 17:16:18,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:16:18" (2/3) ... [2022-12-13 17:16:18,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc2f36b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:16:18, skipping insertion in model container [2022-12-13 17:16:18,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:16:18" (3/3) ... [2022-12-13 17:16:18,714 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-12.i [2022-12-13 17:16:18,720 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:16:18,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:16:18,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 17:16:18,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:16:18,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 17:16:18,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-12-13 17:16:18,867 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-13 17:16:18,868 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:16:18,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 17:16:18,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-12-13 17:16:18,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-12-13 17:16:18,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:16:18,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-12-13 17:16:18,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-12-13 17:16:18,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-12-13 17:16:18,913 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-12-13 17:16:18,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:16:18,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 17:16:18,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-12-13 17:16:21,589 INFO L134 LiptonReduction]: Checked pairs total: 3304 [2022-12-13 17:16:21,590 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-12-13 17:16:21,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:16:21,607 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;@4d4992b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:16:21,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 17:16:21,609 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 17:16:21,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:16:21,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:21,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:16:21,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash 14140798, now seen corresponding path program 1 times [2022-12-13 17:16:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:21,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370494440] [2022-12-13 17:16:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370494440] [2022-12-13 17:16:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370494440] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:21,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:21,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:16:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345343026] [2022-12-13 17:16:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:21,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:21,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:21,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:21,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:21,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:21,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:21,963 INFO L130 PetriNetUnfolder]: 583/864 cut-off events. [2022-12-13 17:16:21,963 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 17:16:21,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 864 events. 583/864 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3544 event pairs, 92 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 1740. Up to 727 conditions per place. [2022-12-13 17:16:21,968 INFO L137 encePairwiseOnDemand]: 223/235 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2022-12-13 17:16:21,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2022-12-13 17:16:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2022-12-13 17:16:21,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2022-12-13 17:16:21,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2022-12-13 17:16:21,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2022-12-13 17:16:21,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:21,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2022-12-13 17:16:21,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:21,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:21,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:21,992 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2022-12-13 17:16:21,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2022-12-13 17:16:21,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:16:21,995 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2022-12-13 17:16:21,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-12-13 17:16:21,999 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-12-13 17:16:21,999 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2022-12-13 17:16:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:21,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:21,999 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 17:16:22,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:16:22,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:22,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash 14140849, now seen corresponding path program 1 times [2022-12-13 17:16:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:22,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159485774] [2022-12-13 17:16:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:22,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:22,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159485774] [2022-12-13 17:16:22,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159485774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:22,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:22,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:16:22,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071003198] [2022-12-13 17:16:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:22,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:22,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:22,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:22,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:22,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:22,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:22,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:22,174 INFO L130 PetriNetUnfolder]: 699/1050 cut-off events. [2022-12-13 17:16:22,174 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-13 17:16:22,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 1050 events. 699/1050 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 4638 event pairs, 277 based on Foata normal form. 50/528 useless extension candidates. Maximal degree in co-relation 2656. Up to 611 conditions per place. [2022-12-13 17:16:22,179 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-12-13 17:16:22,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 216 flow [2022-12-13 17:16:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-12-13 17:16:22,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5049645390070922 [2022-12-13 17:16:22,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-12-13 17:16:22,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-12-13 17:16:22,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:22,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-12-13 17:16:22,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,184 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 356 transitions. [2022-12-13 17:16:22,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 216 flow [2022-12-13 17:16:22,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:22,185 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 97 flow [2022-12-13 17:16:22,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-12-13 17:16:22,186 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-12-13 17:16:22,186 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 97 flow [2022-12-13 17:16:22,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:22,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:16:22,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:16:22,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash 438366704, now seen corresponding path program 1 times [2022-12-13 17:16:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:22,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355070760] [2022-12-13 17:16:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:22,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355070760] [2022-12-13 17:16:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355070760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:22,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:22,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:16:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030984155] [2022-12-13 17:16:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:22,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:22,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:22,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:22,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:22,340 INFO L130 PetriNetUnfolder]: 625/938 cut-off events. [2022-12-13 17:16:22,340 INFO L131 PetriNetUnfolder]: For 256/256 co-relation queries the response was YES. [2022-12-13 17:16:22,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 938 events. 625/938 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3853 event pairs, 435 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 2500. Up to 938 conditions per place. [2022-12-13 17:16:22,346 INFO L137 encePairwiseOnDemand]: 233/235 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2022-12-13 17:16:22,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 141 flow [2022-12-13 17:16:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2022-12-13 17:16:22,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47801418439716314 [2022-12-13 17:16:22,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2022-12-13 17:16:22,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2022-12-13 17:16:22,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:22,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2022-12-13 17:16:22,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,353 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 97 flow. Second operand 3 states and 337 transitions. [2022-12-13 17:16:22,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 141 flow [2022-12-13 17:16:22,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:22,354 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 90 flow [2022-12-13 17:16:22,354 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2022-12-13 17:16:22,355 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-12-13 17:16:22,355 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 90 flow [2022-12-13 17:16:22,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:22,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:16:22,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:16:22,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:22,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash 438366653, now seen corresponding path program 1 times [2022-12-13 17:16:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:22,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615370753] [2022-12-13 17:16:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:22,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:22,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615370753] [2022-12-13 17:16:22,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615370753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:22,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381685049] [2022-12-13 17:16:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:22,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:16:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:16:22,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:22,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:16:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381685049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:22,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:16:22,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 17:16:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358031897] [2022-12-13 17:16:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:16:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:16:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:16:22,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 235 [2022-12-13 17:16:22,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:22,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 235 [2022-12-13 17:16:22,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:22,681 INFO L130 PetriNetUnfolder]: 563/844 cut-off events. [2022-12-13 17:16:22,681 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2022-12-13 17:16:22,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 844 events. 563/844 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3482 event pairs, 207 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 2220. Up to 530 conditions per place. [2022-12-13 17:16:22,692 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 33 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2022-12-13 17:16:22,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 208 flow [2022-12-13 17:16:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:16:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:16:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2022-12-13 17:16:22,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2022-12-13 17:16:22,694 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2022-12-13 17:16:22,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2022-12-13 17:16:22,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:22,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2022-12-13 17:16:22,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,699 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,699 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 90 flow. Second operand 4 states and 455 transitions. [2022-12-13 17:16:22,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 208 flow [2022-12-13 17:16:22,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:22,701 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 124 flow [2022-12-13 17:16:22,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-12-13 17:16:22,702 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-12-13 17:16:22,702 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 124 flow [2022-12-13 17:16:22,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:22,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:22,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:16:22,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:16:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:22,904 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash 438366654, now seen corresponding path program 1 times [2022-12-13 17:16:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:22,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200344075] [2022-12-13 17:16:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200344075] [2022-12-13 17:16:23,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200344075] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8358384] [2022-12-13 17:16:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:23,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:23,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:23,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:16:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:23,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:16:23,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:23,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:23,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8358384] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:23,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:23,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 17:16:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803366372] [2022-12-13 17:16:23,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:16:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:16:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:16:23,174 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:23,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 124 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:23,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:23,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:23,393 INFO L130 PetriNetUnfolder]: 983/1468 cut-off events. [2022-12-13 17:16:23,393 INFO L131 PetriNetUnfolder]: For 948/948 co-relation queries the response was YES. [2022-12-13 17:16:23,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 1468 events. 983/1468 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6526 event pairs, 75 based on Foata normal form. 162/1196 useless extension candidates. Maximal degree in co-relation 4530. Up to 837 conditions per place. [2022-12-13 17:16:23,399 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 67 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2022-12-13 17:16:23,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 84 transitions, 500 flow [2022-12-13 17:16:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:16:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:16:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2022-12-13 17:16:23,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2022-12-13 17:16:23,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2022-12-13 17:16:23,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2022-12-13 17:16:23,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:23,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2022-12-13 17:16:23,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,405 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 235.0) internal successors, (1645), 7 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,405 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 124 flow. Second operand 6 states and 700 transitions. [2022-12-13 17:16:23,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 84 transitions, 500 flow [2022-12-13 17:16:23,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 84 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:23,407 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 309 flow [2022-12-13 17:16:23,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2022-12-13 17:16:23,407 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2022-12-13 17:16:23,407 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 309 flow [2022-12-13 17:16:23,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:23,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:16:23,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:16:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:23,608 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:23,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash 706457306, now seen corresponding path program 1 times [2022-12-13 17:16:23,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:23,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255003709] [2022-12-13 17:16:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:23,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:23,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:23,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255003709] [2022-12-13 17:16:23,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255003709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:23,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:23,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:16:23,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158129519] [2022-12-13 17:16:23,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:23,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:23,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:23,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:23,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:23,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:23,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:23,822 INFO L130 PetriNetUnfolder]: 1463/2179 cut-off events. [2022-12-13 17:16:23,823 INFO L131 PetriNetUnfolder]: For 6251/6251 co-relation queries the response was YES. [2022-12-13 17:16:23,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 2179 events. 1463/2179 cut-off events. For 6251/6251 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10516 event pairs, 388 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 8323. Up to 1263 conditions per place. [2022-12-13 17:16:23,833 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 69 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-12-13 17:16:23,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 733 flow [2022-12-13 17:16:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 17:16:23,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2022-12-13 17:16:23,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 17:16:23,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 17:16:23,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:23,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 17:16:23,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,838 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 309 flow. Second operand 3 states and 348 transitions. [2022-12-13 17:16:23,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 733 flow [2022-12-13 17:16:23,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 666 flow, removed 30 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:23,849 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 289 flow [2022-12-13 17:16:23,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 17:16:23,850 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2022-12-13 17:16:23,850 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 289 flow [2022-12-13 17:16:23,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:23,851 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:16:23,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:16:23,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:23,851 INFO L85 PathProgramCache]: Analyzing trace with hash 706457209, now seen corresponding path program 1 times [2022-12-13 17:16:23,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:23,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934890377] [2022-12-13 17:16:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:23,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:23,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934890377] [2022-12-13 17:16:23,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934890377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:23,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:23,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:16:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786630772] [2022-12-13 17:16:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:23,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:23,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:23,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:23,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:23,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:23,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:23,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:24,109 INFO L130 PetriNetUnfolder]: 1303/1942 cut-off events. [2022-12-13 17:16:24,110 INFO L131 PetriNetUnfolder]: For 4548/4548 co-relation queries the response was YES. [2022-12-13 17:16:24,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7468 conditions, 1942 events. 1303/1942 cut-off events. For 4548/4548 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9160 event pairs, 388 based on Foata normal form. 0/1543 useless extension candidates. Maximal degree in co-relation 7449. Up to 1026 conditions per place. [2022-12-13 17:16:24,125 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 67 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-12-13 17:16:24,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 674 flow [2022-12-13 17:16:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2022-12-13 17:16:24,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2022-12-13 17:16:24,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2022-12-13 17:16:24,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2022-12-13 17:16:24,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:24,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2022-12-13 17:16:24,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,130 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 289 flow. Second operand 3 states and 340 transitions. [2022-12-13 17:16:24,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 674 flow [2022-12-13 17:16:24,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:24,136 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 305 flow [2022-12-13 17:16:24,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 17:16:24,137 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2022-12-13 17:16:24,137 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 305 flow [2022-12-13 17:16:24,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:24,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:16:24,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:16:24,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 706457277, now seen corresponding path program 1 times [2022-12-13 17:16:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:24,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766405260] [2022-12-13 17:16:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:24,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766405260] [2022-12-13 17:16:24,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766405260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:24,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:24,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:16:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489549696] [2022-12-13 17:16:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:24,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:24,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:24,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:24,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:24,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:24,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:24,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:24,337 INFO L130 PetriNetUnfolder]: 1143/1705 cut-off events. [2022-12-13 17:16:24,337 INFO L131 PetriNetUnfolder]: For 4603/4603 co-relation queries the response was YES. [2022-12-13 17:16:24,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6917 conditions, 1705 events. 1143/1705 cut-off events. For 4603/4603 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7866 event pairs, 277 based on Foata normal form. 77/1481 useless extension candidates. Maximal degree in co-relation 6895. Up to 1026 conditions per place. [2022-12-13 17:16:24,351 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 66 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2022-12-13 17:16:24,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 682 flow [2022-12-13 17:16:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-12-13 17:16:24,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:16:24,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-12-13 17:16:24,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-12-13 17:16:24,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:24,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-12-13 17:16:24,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,354 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 305 flow. Second operand 3 states and 339 transitions. [2022-12-13 17:16:24,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 682 flow [2022-12-13 17:16:24,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 673 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 17:16:24,357 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 298 flow [2022-12-13 17:16:24,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2022-12-13 17:16:24,358 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-12-13 17:16:24,358 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 298 flow [2022-12-13 17:16:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:24,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:16:24,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:16:24,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash 706455305, now seen corresponding path program 1 times [2022-12-13 17:16:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:24,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556742586] [2022-12-13 17:16:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:24,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:24,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556742586] [2022-12-13 17:16:24,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556742586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:24,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:24,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:16:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7224428] [2022-12-13 17:16:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:24,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:24,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:24,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:24,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:24,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:24,537 INFO L130 PetriNetUnfolder]: 1087/1621 cut-off events. [2022-12-13 17:16:24,537 INFO L131 PetriNetUnfolder]: For 3332/3332 co-relation queries the response was YES. [2022-12-13 17:16:24,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6674 conditions, 1621 events. 1087/1621 cut-off events. For 3332/3332 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6952 event pairs, 332 based on Foata normal form. 77/1447 useless extension candidates. Maximal degree in co-relation 6653. Up to 1128 conditions per place. [2022-12-13 17:16:24,545 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-12-13 17:16:24,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 469 flow [2022-12-13 17:16:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-12-13 17:16:24,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49361702127659574 [2022-12-13 17:16:24,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-12-13 17:16:24,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-12-13 17:16:24,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:24,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-12-13 17:16:24,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,548 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 298 flow. Second operand 3 states and 348 transitions. [2022-12-13 17:16:24,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 469 flow [2022-12-13 17:16:24,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:24,552 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 317 flow [2022-12-13 17:16:24,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2022-12-13 17:16:24,552 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-13 17:16:24,552 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 317 flow [2022-12-13 17:16:24,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:24,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:24,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:16:24,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash 425340463, now seen corresponding path program 1 times [2022-12-13 17:16:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:24,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437882478] [2022-12-13 17:16:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:24,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:24,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437882478] [2022-12-13 17:16:24,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437882478] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449804020] [2022-12-13 17:16:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:24,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:24,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:24,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:24,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:16:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:24,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:16:24,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:24,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:16:24,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449804020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:24,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:16:24,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 17:16:24,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834957826] [2022-12-13 17:16:24,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:24,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:16:24,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:16:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:16:24,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:24,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:24,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:24,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:24,822 INFO L130 PetriNetUnfolder]: 935/1396 cut-off events. [2022-12-13 17:16:24,822 INFO L131 PetriNetUnfolder]: For 4448/4448 co-relation queries the response was YES. [2022-12-13 17:16:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5969 conditions, 1396 events. 935/1396 cut-off events. For 4448/4448 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6221 event pairs, 162 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 5946. Up to 973 conditions per place. [2022-12-13 17:16:24,832 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 17:16:24,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 707 flow [2022-12-13 17:16:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:16:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:16:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2022-12-13 17:16:24,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4776595744680851 [2022-12-13 17:16:24,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2022-12-13 17:16:24,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2022-12-13 17:16:24,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:24,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2022-12-13 17:16:24,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,836 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 317 flow. Second operand 4 states and 449 transitions. [2022-12-13 17:16:24,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 707 flow [2022-12-13 17:16:24,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:24,839 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 311 flow [2022-12-13 17:16:24,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2022-12-13 17:16:24,839 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-13 17:16:24,839 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 311 flow [2022-12-13 17:16:24,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:24,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:24,840 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:24,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:16:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:25,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:25,041 INFO L85 PathProgramCache]: Analyzing trace with hash 425340434, now seen corresponding path program 1 times [2022-12-13 17:16:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:25,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613324070] [2022-12-13 17:16:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:25,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613324070] [2022-12-13 17:16:25,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613324070] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:25,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117023078] [2022-12-13 17:16:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:25,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:25,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:25,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:25,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:16:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:25,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:16:25,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:25,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:25,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117023078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:25,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:25,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 17:16:25,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611568622] [2022-12-13 17:16:25,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:25,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:16:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:25,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:16:25,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:16:25,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 235 [2022-12-13 17:16:25,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 311 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:25,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:25,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 235 [2022-12-13 17:16:25,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:25,624 INFO L130 PetriNetUnfolder]: 2224/3269 cut-off events. [2022-12-13 17:16:25,624 INFO L131 PetriNetUnfolder]: For 11767/11767 co-relation queries the response was YES. [2022-12-13 17:16:25,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13812 conditions, 3269 events. 2224/3269 cut-off events. For 11767/11767 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15788 event pairs, 162 based on Foata normal form. 219/2986 useless extension candidates. Maximal degree in co-relation 13788. Up to 945 conditions per place. [2022-12-13 17:16:25,639 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 234 selfloop transitions, 9 changer transitions 0/243 dead transitions. [2022-12-13 17:16:25,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 243 transitions, 2635 flow [2022-12-13 17:16:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:16:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 17:16:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1012 transitions. [2022-12-13 17:16:25,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47848699763593383 [2022-12-13 17:16:25,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1012 transitions. [2022-12-13 17:16:25,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1012 transitions. [2022-12-13 17:16:25,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:25,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1012 transitions. [2022-12-13 17:16:25,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.44444444444444) internal successors, (1012), 9 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:25,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:25,645 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:25,645 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 311 flow. Second operand 9 states and 1012 transitions. [2022-12-13 17:16:25,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 243 transitions, 2635 flow [2022-12-13 17:16:25,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 243 transitions, 2632 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:16:25,651 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 370 flow [2022-12-13 17:16:25,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2022-12-13 17:16:25,652 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-12-13 17:16:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 370 flow [2022-12-13 17:16:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:25,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:25,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:25,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:16:25,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:25,853 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash 425340366, now seen corresponding path program 1 times [2022-12-13 17:16:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:25,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784296001] [2022-12-13 17:16:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:25,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784296001] [2022-12-13 17:16:25,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784296001] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:25,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129123140] [2022-12-13 17:16:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:25,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:25,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:25,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:25,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:16:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:25,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:16:25,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:25,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:16:25,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129123140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:25,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:16:25,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-12-13 17:16:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484376467] [2022-12-13 17:16:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:16:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:25,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:16:25,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:16:26,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:26,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:26,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:26,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:26,289 INFO L130 PetriNetUnfolder]: 1695/2521 cut-off events. [2022-12-13 17:16:26,289 INFO L131 PetriNetUnfolder]: For 9589/9589 co-relation queries the response was YES. [2022-12-13 17:16:26,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11543 conditions, 2521 events. 1695/2521 cut-off events. For 9589/9589 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11934 event pairs, 162 based on Foata normal form. 292/2648 useless extension candidates. Maximal degree in co-relation 11516. Up to 2098 conditions per place. [2022-12-13 17:16:26,306 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 66 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-12-13 17:16:26,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 732 flow [2022-12-13 17:16:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:16:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:16:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-12-13 17:16:26,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2022-12-13 17:16:26,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-12-13 17:16:26,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-12-13 17:16:26,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:26,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-12-13 17:16:26,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,313 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 235.0) internal successors, (1175), 5 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,313 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 370 flow. Second operand 4 states and 448 transitions. [2022-12-13 17:16:26,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 732 flow [2022-12-13 17:16:26,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 728 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:16:26,323 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 339 flow [2022-12-13 17:16:26,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2022-12-13 17:16:26,324 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2022-12-13 17:16:26,324 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 339 flow [2022-12-13 17:16:26,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:26,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:26,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:16:26,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:16:26,525 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash 425278415, now seen corresponding path program 1 times [2022-12-13 17:16:26,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:26,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521986960] [2022-12-13 17:16:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:26,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:26,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:26,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521986960] [2022-12-13 17:16:26,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521986960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:16:26,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:16:26,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:16:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78481599] [2022-12-13 17:16:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:16:26,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:16:26,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:16:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:16:26,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 235 [2022-12-13 17:16:26,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:26,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 235 [2022-12-13 17:16:26,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:26,822 INFO L130 PetriNetUnfolder]: 1431/2158 cut-off events. [2022-12-13 17:16:26,822 INFO L131 PetriNetUnfolder]: For 7821/7821 co-relation queries the response was YES. [2022-12-13 17:16:26,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 2158 events. 1431/2158 cut-off events. For 7821/7821 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9802 event pairs, 1013 based on Foata normal form. 0/2158 useless extension candidates. Maximal degree in co-relation 9670. Up to 2158 conditions per place. [2022-12-13 17:16:26,832 INFO L137 encePairwiseOnDemand]: 233/235 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 17:16:26,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 36 transitions, 373 flow [2022-12-13 17:16:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:16:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:16:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2022-12-13 17:16:26,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47092198581560285 [2022-12-13 17:16:26,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2022-12-13 17:16:26,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2022-12-13 17:16:26,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:26,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2022-12-13 17:16:26,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,835 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 339 flow. Second operand 3 states and 332 transitions. [2022-12-13 17:16:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 36 transitions, 373 flow [2022-12-13 17:16:26,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:16:26,839 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 300 flow [2022-12-13 17:16:26,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2022-12-13 17:16:26,840 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2022-12-13 17:16:26,840 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 300 flow [2022-12-13 17:16:26,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:26,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:26,840 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-12-13 17:16:26,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:16:26,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1612686017, now seen corresponding path program 2 times [2022-12-13 17:16:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:26,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858568638] [2022-12-13 17:16:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:26,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:26,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858568638] [2022-12-13 17:16:26,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858568638] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:26,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889117394] [2022-12-13 17:16:26,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:16:26,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:26,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:26,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:26,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:16:26,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:16:26,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:16:26,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:16:26,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:27,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:27,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889117394] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:27,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:27,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:16:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312085548] [2022-12-13 17:16:27,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:27,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:16:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:16:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:16:27,156 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:27,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 300 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:27,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:27,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:27,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:27,777 INFO L130 PetriNetUnfolder]: 2423/3658 cut-off events. [2022-12-13 17:16:27,777 INFO L131 PetriNetUnfolder]: For 12728/12728 co-relation queries the response was YES. [2022-12-13 17:16:27,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16301 conditions, 3658 events. 2423/3658 cut-off events. For 12728/12728 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 17869 event pairs, 175 based on Foata normal form. 496/4154 useless extension candidates. Maximal degree in co-relation 16274. Up to 1533 conditions per place. [2022-12-13 17:16:27,789 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 149 selfloop transitions, 32 changer transitions 0/181 dead transitions. [2022-12-13 17:16:27,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 181 transitions, 1539 flow [2022-12-13 17:16:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:16:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:16:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-12-13 17:16:27,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2022-12-13 17:16:27,792 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-12-13 17:16:27,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-12-13 17:16:27,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:27,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-12-13 17:16:27,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.16666666666667) internal successors, (1370), 12 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:27,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:27,800 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:27,801 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 300 flow. Second operand 12 states and 1370 transitions. [2022-12-13 17:16:27,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 181 transitions, 1539 flow [2022-12-13 17:16:27,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 181 transitions, 1538 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:16:27,812 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 642 flow [2022-12-13 17:16:27,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=642, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-12-13 17:16:27,812 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2022-12-13 17:16:27,812 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 642 flow [2022-12-13 17:16:27,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:27,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:27,813 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:27,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:16:28,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:16:28,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash 298729377, now seen corresponding path program 1 times [2022-12-13 17:16:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:28,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643770413] [2022-12-13 17:16:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:28,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643770413] [2022-12-13 17:16:28,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643770413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007929291] [2022-12-13 17:16:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:28,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:28,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:28,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:28,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:16:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:28,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:16:28,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:28,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:28,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:28,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007929291] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:28,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:28,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-12-13 17:16:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477531391] [2022-12-13 17:16:28,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:16:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:16:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:16:28,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:28,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 642 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:28,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:28,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:28,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:28,865 INFO L130 PetriNetUnfolder]: 3127/4714 cut-off events. [2022-12-13 17:16:28,865 INFO L131 PetriNetUnfolder]: For 32393/32393 co-relation queries the response was YES. [2022-12-13 17:16:28,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24427 conditions, 4714 events. 3127/4714 cut-off events. For 32393/32393 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24646 event pairs, 230 based on Foata normal form. 308/5022 useless extension candidates. Maximal degree in co-relation 24393. Up to 3357 conditions per place. [2022-12-13 17:16:28,883 INFO L137 encePairwiseOnDemand]: 230/235 looper letters, 115 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2022-12-13 17:16:28,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 1473 flow [2022-12-13 17:16:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:16:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 17:16:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 904 transitions. [2022-12-13 17:16:28,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:16:28,885 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 904 transitions. [2022-12-13 17:16:28,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 904 transitions. [2022-12-13 17:16:28,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:28,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 904 transitions. [2022-12-13 17:16:28,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:28,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:28,888 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 235.0) internal successors, (2115), 9 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:28,888 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 642 flow. Second operand 8 states and 904 transitions. [2022-12-13 17:16:28,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 1473 flow [2022-12-13 17:16:28,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 138 transitions, 1387 flow, removed 40 selfloop flow, removed 2 redundant places. [2022-12-13 17:16:28,926 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 838 flow [2022-12-13 17:16:28,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2022-12-13 17:16:28,927 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2022-12-13 17:16:28,927 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 838 flow [2022-12-13 17:16:28,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:28,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:28,927 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:28,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:16:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:16:29,129 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1164663805, now seen corresponding path program 2 times [2022-12-13 17:16:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:29,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882951418] [2022-12-13 17:16:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:29,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882951418] [2022-12-13 17:16:29,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882951418] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:29,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499627682] [2022-12-13 17:16:29,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:16:29,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:29,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:29,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:29,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:16:29,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:16:29,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:16:29,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:16:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:29,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:29,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499627682] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:29,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:29,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:16:29,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857509708] [2022-12-13 17:16:29,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:29,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:16:29,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:16:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:16:29,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 235 [2022-12-13 17:16:29,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 838 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:29,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:29,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 235 [2022-12-13 17:16:29,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:30,749 INFO L130 PetriNetUnfolder]: 6487/9754 cut-off events. [2022-12-13 17:16:30,749 INFO L131 PetriNetUnfolder]: For 110723/110723 co-relation queries the response was YES. [2022-12-13 17:16:30,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51877 conditions, 9754 events. 6487/9754 cut-off events. For 110723/110723 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 53573 event pairs, 325 based on Foata normal form. 840/10594 useless extension candidates. Maximal degree in co-relation 51838. Up to 2941 conditions per place. [2022-12-13 17:16:30,790 INFO L137 encePairwiseOnDemand]: 232/235 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2022-12-13 17:16:30,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9790 flow [2022-12-13 17:16:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:16:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:16:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-12-13 17:16:30,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726950354609929 [2022-12-13 17:16:30,793 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-12-13 17:16:30,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-12-13 17:16:30,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:30,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-12-13 17:16:30,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:30,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:30,797 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:30,797 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 838 flow. Second operand 12 states and 1333 transitions. [2022-12-13 17:16:30,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9790 flow [2022-12-13 17:16:30,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 665 transitions, 9074 flow, removed 330 selfloop flow, removed 2 redundant places. [2022-12-13 17:16:30,882 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 856 flow [2022-12-13 17:16:30,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=856, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2022-12-13 17:16:30,883 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2022-12-13 17:16:30,883 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 856 flow [2022-12-13 17:16:30,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:30,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:30,885 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:30,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:16:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:16:31,087 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1588219877, now seen corresponding path program 1 times [2022-12-13 17:16:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:31,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292309689] [2022-12-13 17:16:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:31,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:31,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292309689] [2022-12-13 17:16:31,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292309689] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:31,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634366491] [2022-12-13 17:16:31,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:31,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:31,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:31,211 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:31,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:16:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:31,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:16:31,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:31,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:31,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634366491] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:31,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:31,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:16:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612982844] [2022-12-13 17:16:31,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:31,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:16:31,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:31,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:16:31,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:16:31,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:31,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 856 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:31,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:31,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:31,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:33,416 INFO L130 PetriNetUnfolder]: 9719/14783 cut-off events. [2022-12-13 17:16:33,416 INFO L131 PetriNetUnfolder]: For 148597/148597 co-relation queries the response was YES. [2022-12-13 17:16:33,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79136 conditions, 14783 events. 9719/14783 cut-off events. For 148597/148597 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 91739 event pairs, 344 based on Foata normal form. 658/15441 useless extension candidates. Maximal degree in co-relation 79091. Up to 5519 conditions per place. [2022-12-13 17:16:33,484 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 256 selfloop transitions, 74 changer transitions 0/330 dead transitions. [2022-12-13 17:16:33,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 330 transitions, 3782 flow [2022-12-13 17:16:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:16:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 17:16:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-12-13 17:16:33,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:16:33,487 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-12-13 17:16:33,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-12-13 17:16:33,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:33,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-12-13 17:16:33,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.0) internal successors, (1695), 15 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:33,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 235.0) internal successors, (3760), 16 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:33,492 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 235.0) internal successors, (3760), 16 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:33,492 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 856 flow. Second operand 15 states and 1695 transitions. [2022-12-13 17:16:33,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 330 transitions, 3782 flow [2022-12-13 17:16:33,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 330 transitions, 3494 flow, removed 91 selfloop flow, removed 5 redundant places. [2022-12-13 17:16:33,756 INFO L231 Difference]: Finished difference. Result has 106 places, 115 transitions, 1580 flow [2022-12-13 17:16:33,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1580, PETRI_PLACES=106, PETRI_TRANSITIONS=115} [2022-12-13 17:16:33,757 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2022-12-13 17:16:33,757 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 115 transitions, 1580 flow [2022-12-13 17:16:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:33,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:33,758 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:33,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:16:33,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:16:33,959 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1282689847, now seen corresponding path program 2 times [2022-12-13 17:16:33,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771588497] [2022-12-13 17:16:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771588497] [2022-12-13 17:16:34,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771588497] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:34,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639494618] [2022-12-13 17:16:34,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:16:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:34,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:34,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:34,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:16:34,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:16:34,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:16:34,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:16:34,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:34,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:34,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639494618] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:34,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:34,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-13 17:16:34,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102098177] [2022-12-13 17:16:34,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:34,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 17:16:34,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:34,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 17:16:34,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:16:34,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:34,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 115 transitions, 1580 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:34,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:34,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:34,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:37,466 INFO L130 PetriNetUnfolder]: 14457/22088 cut-off events. [2022-12-13 17:16:37,466 INFO L131 PetriNetUnfolder]: For 313145/313145 co-relation queries the response was YES. [2022-12-13 17:16:37,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132858 conditions, 22088 events. 14457/22088 cut-off events. For 313145/313145 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 148077 event pairs, 655 based on Foata normal form. 727/22815 useless extension candidates. Maximal degree in co-relation 132806. Up to 9426 conditions per place. [2022-12-13 17:16:37,611 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 329 selfloop transitions, 108 changer transitions 0/437 dead transitions. [2022-12-13 17:16:37,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 437 transitions, 5353 flow [2022-12-13 17:16:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:16:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 17:16:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2023 transitions. [2022-12-13 17:16:37,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4782505910165485 [2022-12-13 17:16:37,615 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2023 transitions. [2022-12-13 17:16:37,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2023 transitions. [2022-12-13 17:16:37,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:37,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2023 transitions. [2022-12-13 17:16:37,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.38888888888889) internal successors, (2023), 18 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:37,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:37,621 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:37,621 INFO L175 Difference]: Start difference. First operand has 106 places, 115 transitions, 1580 flow. Second operand 18 states and 2023 transitions. [2022-12-13 17:16:37,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 437 transitions, 5353 flow [2022-12-13 17:16:39,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 437 transitions, 5087 flow, removed 124 selfloop flow, removed 6 redundant places. [2022-12-13 17:16:39,201 INFO L231 Difference]: Finished difference. Result has 124 places, 177 transitions, 2674 flow [2022-12-13 17:16:39,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2674, PETRI_PLACES=124, PETRI_TRANSITIONS=177} [2022-12-13 17:16:39,201 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2022-12-13 17:16:39,201 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 177 transitions, 2674 flow [2022-12-13 17:16:39,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:39,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:39,202 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:39,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:16:39,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:16:39,403 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1104063780, now seen corresponding path program 1 times [2022-12-13 17:16:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366918714] [2022-12-13 17:16:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:39,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:39,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366918714] [2022-12-13 17:16:39,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366918714] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691628898] [2022-12-13 17:16:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:39,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:39,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:39,479 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:39,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:16:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:16:39,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:39,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:39,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691628898] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:39,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:39,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 17:16:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113686893] [2022-12-13 17:16:39,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 17:16:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 17:16:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-12-13 17:16:39,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:39,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 177 transitions, 2674 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:39,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:39,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:44,501 INFO L130 PetriNetUnfolder]: 19869/30502 cut-off events. [2022-12-13 17:16:44,501 INFO L131 PetriNetUnfolder]: For 618169/618169 co-relation queries the response was YES. [2022-12-13 17:16:44,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197462 conditions, 30502 events. 19869/30502 cut-off events. For 618169/618169 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 215934 event pairs, 1292 based on Foata normal form. 994/31496 useless extension candidates. Maximal degree in co-relation 197404. Up to 12100 conditions per place. [2022-12-13 17:16:44,726 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 338 selfloop transitions, 153 changer transitions 0/491 dead transitions. [2022-12-13 17:16:44,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 491 transitions, 6576 flow [2022-12-13 17:16:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:16:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 17:16:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1920 transitions. [2022-12-13 17:16:44,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806007509386733 [2022-12-13 17:16:44,728 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1920 transitions. [2022-12-13 17:16:44,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1920 transitions. [2022-12-13 17:16:44,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:44,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1920 transitions. [2022-12-13 17:16:44,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 112.94117647058823) internal successors, (1920), 17 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:44,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:44,734 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:44,734 INFO L175 Difference]: Start difference. First operand has 124 places, 177 transitions, 2674 flow. Second operand 17 states and 1920 transitions. [2022-12-13 17:16:44,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 491 transitions, 6576 flow [2022-12-13 17:16:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 491 transitions, 6359 flow, removed 104 selfloop flow, removed 3 redundant places. [2022-12-13 17:16:48,788 INFO L231 Difference]: Finished difference. Result has 145 places, 239 transitions, 4096 flow [2022-12-13 17:16:48,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4096, PETRI_PLACES=145, PETRI_TRANSITIONS=239} [2022-12-13 17:16:48,788 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2022-12-13 17:16:48,788 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 239 transitions, 4096 flow [2022-12-13 17:16:48,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:48,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:16:48,789 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:16:48,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:16:48,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:48,990 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:16:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:16:48,991 INFO L85 PathProgramCache]: Analyzing trace with hash 156401254, now seen corresponding path program 3 times [2022-12-13 17:16:48,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:16:48,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122113952] [2022-12-13 17:16:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:16:48,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:16:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:16:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:16:49,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122113952] [2022-12-13 17:16:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122113952] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:16:49,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133780922] [2022-12-13 17:16:49,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:16:49,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:16:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:16:49,095 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:16:49,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:16:49,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 17:16:49,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:16:49,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:16:49,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:16:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:49,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:16:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:16:49,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133780922] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:16:49,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:16:49,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 17:16:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398817450] [2022-12-13 17:16:49,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:16:49,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:16:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:16:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:16:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:16:49,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:16:49,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 239 transitions, 4096 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:49,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:16:49,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:16:49,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:16:56,375 INFO L130 PetriNetUnfolder]: 23919/36725 cut-off events. [2022-12-13 17:16:56,375 INFO L131 PetriNetUnfolder]: For 1032887/1032887 co-relation queries the response was YES. [2022-12-13 17:16:56,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254626 conditions, 36725 events. 23919/36725 cut-off events. For 1032887/1032887 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 264911 event pairs, 1294 based on Foata normal form. 1141/37866 useless extension candidates. Maximal degree in co-relation 254559. Up to 11634 conditions per place. [2022-12-13 17:16:56,696 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 388 selfloop transitions, 237 changer transitions 0/625 dead transitions. [2022-12-13 17:16:56,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 625 transitions, 8961 flow [2022-12-13 17:16:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 17:16:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 17:16:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-12-13 17:16:56,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806484295845998 [2022-12-13 17:16:56,700 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-12-13 17:16:56,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-12-13 17:16:56,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:16:56,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-12-13 17:16:56,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.95238095238095) internal successors, (2372), 21 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:56,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:56,705 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:16:56,705 INFO L175 Difference]: Start difference. First operand has 145 places, 239 transitions, 4096 flow. Second operand 21 states and 2372 transitions. [2022-12-13 17:16:56,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 625 transitions, 8961 flow [2022-12-13 17:17:04,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 625 transitions, 8549 flow, removed 191 selfloop flow, removed 6 redundant places. [2022-12-13 17:17:04,456 INFO L231 Difference]: Finished difference. Result has 168 places, 302 transitions, 5707 flow [2022-12-13 17:17:04,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5707, PETRI_PLACES=168, PETRI_TRANSITIONS=302} [2022-12-13 17:17:04,457 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2022-12-13 17:17:04,457 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 302 transitions, 5707 flow [2022-12-13 17:17:04,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:04,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:17:04,457 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:17:04,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:17:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:17:04,659 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:17:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:17:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 13260304, now seen corresponding path program 4 times [2022-12-13 17:17:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:17:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996380555] [2022-12-13 17:17:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:17:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:17:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:17:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:17:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:17:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996380555] [2022-12-13 17:17:04,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996380555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:17:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531529535] [2022-12-13 17:17:04,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:17:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:17:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:17:04,767 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:17:04,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:17:04,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:17:04,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:17:04,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 17:17:04,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:17:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:17:04,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:17:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:17:04,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531529535] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:17:04,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:17:04,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-12-13 17:17:04,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577013419] [2022-12-13 17:17:04,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:17:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:17:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:17:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:17:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:17:04,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:17:04,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 302 transitions, 5707 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:04,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:17:04,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:17:04,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:17:13,167 INFO L130 PetriNetUnfolder]: 31863/48841 cut-off events. [2022-12-13 17:17:13,167 INFO L131 PetriNetUnfolder]: For 1515546/1515546 co-relation queries the response was YES. [2022-12-13 17:17:13,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355207 conditions, 48841 events. 31863/48841 cut-off events. For 1515546/1515546 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 366535 event pairs, 1435 based on Foata normal form. 1095/49936 useless extension candidates. Maximal degree in co-relation 355132. Up to 17825 conditions per place. [2022-12-13 17:17:13,781 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 521 selfloop transitions, 282 changer transitions 0/803 dead transitions. [2022-12-13 17:17:13,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 803 transitions, 12441 flow [2022-12-13 17:17:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:17:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 17:17:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2921 transitions. [2022-12-13 17:17:13,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47806873977086745 [2022-12-13 17:17:13,785 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2921 transitions. [2022-12-13 17:17:13,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2921 transitions. [2022-12-13 17:17:13,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:17:13,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2921 transitions. [2022-12-13 17:17:13,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 112.34615384615384) internal successors, (2921), 26 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:13,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:13,792 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:13,793 INFO L175 Difference]: Start difference. First operand has 168 places, 302 transitions, 5707 flow. Second operand 26 states and 2921 transitions. [2022-12-13 17:17:13,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 803 transitions, 12441 flow [2022-12-13 17:17:28,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 803 transitions, 11977 flow, removed 215 selfloop flow, removed 6 redundant places. [2022-12-13 17:17:28,112 INFO L231 Difference]: Finished difference. Result has 197 places, 405 transitions, 8186 flow [2022-12-13 17:17:28,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8186, PETRI_PLACES=197, PETRI_TRANSITIONS=405} [2022-12-13 17:17:28,113 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2022-12-13 17:17:28,113 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 405 transitions, 8186 flow [2022-12-13 17:17:28,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:28,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:17:28,113 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:17:28,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 17:17:28,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:17:28,314 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:17:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:17:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 415693629, now seen corresponding path program 5 times [2022-12-13 17:17:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:17:28,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364938119] [2022-12-13 17:17:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:17:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:17:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:17:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:17:28,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:17:28,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364938119] [2022-12-13 17:17:28,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364938119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:17:28,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423422705] [2022-12-13 17:17:28,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:17:28,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:17:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:17:28,396 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:17:28,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:17:28,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 17:17:28,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:17:28,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:17:28,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:17:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:17:28,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:17:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:17:28,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423422705] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:17:28,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:17:28,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 17:17:28,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319635694] [2022-12-13 17:17:28,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:17:28,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:17:28,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:17:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:17:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:17:28,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:17:28,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 405 transitions, 8186 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:28,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:17:28,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:17:28,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:17:41,976 INFO L130 PetriNetUnfolder]: 42973/66222 cut-off events. [2022-12-13 17:17:41,976 INFO L131 PetriNetUnfolder]: For 2951756/2951756 co-relation queries the response was YES. [2022-12-13 17:17:42,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507088 conditions, 66222 events. 42973/66222 cut-off events. For 2951756/2951756 co-relation queries the response was YES. Maximal size of possible extension queue 2058. Compared 519186 event pairs, 3505 based on Foata normal form. 1561/67783 useless extension candidates. Maximal degree in co-relation 507003. Up to 29394 conditions per place. [2022-12-13 17:17:42,758 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 682 selfloop transitions, 360 changer transitions 0/1042 dead transitions. [2022-12-13 17:17:42,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 1042 transitions, 17366 flow [2022-12-13 17:17:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 17:17:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-13 17:17:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3382 transitions. [2022-12-13 17:17:42,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4797163120567376 [2022-12-13 17:17:42,762 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3382 transitions. [2022-12-13 17:17:42,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3382 transitions. [2022-12-13 17:17:42,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:17:42,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3382 transitions. [2022-12-13 17:17:42,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.73333333333333) internal successors, (3382), 30 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:42,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 235.0) internal successors, (7285), 31 states have internal predecessors, (7285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:42,771 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 235.0) internal successors, (7285), 31 states have internal predecessors, (7285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:17:42,771 INFO L175 Difference]: Start difference. First operand has 197 places, 405 transitions, 8186 flow. Second operand 30 states and 3382 transitions. [2022-12-13 17:17:42,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 1042 transitions, 17366 flow [2022-12-13 17:18:18,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 1042 transitions, 16760 flow, removed 288 selfloop flow, removed 6 redundant places. [2022-12-13 17:18:18,904 INFO L231 Difference]: Finished difference. Result has 230 places, 563 transitions, 12198 flow [2022-12-13 17:18:18,904 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7808, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12198, PETRI_PLACES=230, PETRI_TRANSITIONS=563} [2022-12-13 17:18:18,905 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2022-12-13 17:18:18,905 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 563 transitions, 12198 flow [2022-12-13 17:18:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:18:18,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:18:18,905 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:18:18,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 17:18:19,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 17:18:19,106 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:18:19,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:18:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 143813186, now seen corresponding path program 6 times [2022-12-13 17:18:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:18:19,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469716383] [2022-12-13 17:18:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:18:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:18:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:18:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:18:19,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469716383] [2022-12-13 17:18:19,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469716383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:18:19,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727577989] [2022-12-13 17:18:19,236 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 17:18:19,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:18:19,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:18:19,237 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:18:19,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:18:19,301 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 17:18:19,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:18:19,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:18:19,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:18:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:19,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:18:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:18:19,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727577989] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:18:19,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:18:19,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 17:18:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367429448] [2022-12-13 17:18:19,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:18:19,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:18:19,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:18:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:18:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=430, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:18:19,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:18:19,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 563 transitions, 12198 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:18:19,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:18:19,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:18:19,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:18:37,576 INFO L130 PetriNetUnfolder]: 49487/76251 cut-off events. [2022-12-13 17:18:37,576 INFO L131 PetriNetUnfolder]: For 3970120/3970120 co-relation queries the response was YES. [2022-12-13 17:18:38,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621059 conditions, 76251 events. 49487/76251 cut-off events. For 3970120/3970120 co-relation queries the response was YES. Maximal size of possible extension queue 2339. Compared 609463 event pairs, 4023 based on Foata normal form. 1293/77544 useless extension candidates. Maximal degree in co-relation 620963. Up to 33937 conditions per place. [2022-12-13 17:18:38,674 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 616 selfloop transitions, 394 changer transitions 0/1010 dead transitions. [2022-12-13 17:18:38,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1010 transitions, 19006 flow [2022-12-13 17:18:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 17:18:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 17:18:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2597 transitions. [2022-12-13 17:18:38,678 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4804810360777058 [2022-12-13 17:18:38,679 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2597 transitions. [2022-12-13 17:18:38,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2597 transitions. [2022-12-13 17:18:38,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:18:38,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2597 transitions. [2022-12-13 17:18:38,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 112.91304347826087) internal successors, (2597), 23 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:18:38,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 235.0) internal successors, (5640), 24 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:18:38,688 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 235.0) internal successors, (5640), 24 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:18:38,688 INFO L175 Difference]: Start difference. First operand has 230 places, 563 transitions, 12198 flow. Second operand 23 states and 2597 transitions. [2022-12-13 17:18:38,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1010 transitions, 19006 flow [2022-12-13 17:19:40,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1010 transitions, 18493 flow, removed 220 selfloop flow, removed 11 redundant places. [2022-12-13 17:19:40,429 INFO L231 Difference]: Finished difference. Result has 251 places, 643 transitions, 14902 flow [2022-12-13 17:19:40,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=11781, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14902, PETRI_PLACES=251, PETRI_TRANSITIONS=643} [2022-12-13 17:19:40,429 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2022-12-13 17:19:40,429 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 643 transitions, 14902 flow [2022-12-13 17:19:40,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:19:40,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:19:40,430 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:19:40,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 17:19:40,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 17:19:40,631 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:19:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:19:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 286953978, now seen corresponding path program 2 times [2022-12-13 17:19:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:19:40,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986417844] [2022-12-13 17:19:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:19:40,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:19:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:19:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:19:40,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:19:40,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986417844] [2022-12-13 17:19:40,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986417844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:19:40,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488610263] [2022-12-13 17:19:40,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:19:40,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:19:40,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:19:40,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:19:40,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:19:40,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:19:40,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:19:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:19:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:19:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:19:40,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:19:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:19:40,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488610263] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:19:40,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:19:40,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-12-13 17:19:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641673394] [2022-12-13 17:19:40,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:19:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:19:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:19:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:19:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2022-12-13 17:19:41,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:19:41,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 643 transitions, 14902 flow. Second operand has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:19:41,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:19:41,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:19:41,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:20:06,512 INFO L130 PetriNetUnfolder]: 64685/99692 cut-off events. [2022-12-13 17:20:06,512 INFO L131 PetriNetUnfolder]: For 5701185/5701185 co-relation queries the response was YES. [2022-12-13 17:20:07,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840758 conditions, 99692 events. 64685/99692 cut-off events. For 5701185/5701185 co-relation queries the response was YES. Maximal size of possible extension queue 3137. Compared 825426 event pairs, 5127 based on Foata normal form. 1302/100994 useless extension candidates. Maximal degree in co-relation 840651. Up to 39482 conditions per place. [2022-12-13 17:20:08,051 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 746 selfloop transitions, 571 changer transitions 0/1317 dead transitions. [2022-12-13 17:20:08,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1317 transitions, 26146 flow [2022-12-13 17:20:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 17:20:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-13 17:20:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3254 transitions. [2022-12-13 17:20:08,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47747615553925166 [2022-12-13 17:20:08,055 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3254 transitions. [2022-12-13 17:20:08,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3254 transitions. [2022-12-13 17:20:08,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:20:08,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3254 transitions. [2022-12-13 17:20:08,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 112.20689655172414) internal successors, (3254), 29 states have internal predecessors, (3254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:20:08,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 235.0) internal successors, (7050), 30 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:20:08,063 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 235.0) internal successors, (7050), 30 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:20:08,064 INFO L175 Difference]: Start difference. First operand has 251 places, 643 transitions, 14902 flow. Second operand 29 states and 3254 transitions. [2022-12-13 17:20:08,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1317 transitions, 26146 flow [2022-12-13 17:21:57,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1317 transitions, 25418 flow, removed 347 selfloop flow, removed 6 redundant places. [2022-12-13 17:21:57,317 INFO L231 Difference]: Finished difference. Result has 283 places, 853 transitions, 20860 flow [2022-12-13 17:21:57,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=14460, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20860, PETRI_PLACES=283, PETRI_TRANSITIONS=853} [2022-12-13 17:21:57,318 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 254 predicate places. [2022-12-13 17:21:57,318 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 853 transitions, 20860 flow [2022-12-13 17:21:57,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 104.61538461538461) internal successors, (2720), 26 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:21:57,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:21:57,318 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:21:57,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 17:21:57,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:21:57,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:21:57,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:21:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash 120947969, now seen corresponding path program 7 times [2022-12-13 17:21:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:21:57,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839878383] [2022-12-13 17:21:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:21:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:21:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:21:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:21:57,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839878383] [2022-12-13 17:21:57,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839878383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:21:57,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512787700] [2022-12-13 17:21:57,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 17:21:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:21:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:21:57,634 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:21:57,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:21:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:21:57,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:21:57,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:21:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:21:57,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:21:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:21:57,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512787700] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:21:57,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:21:57,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 17:21:57,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512260028] [2022-12-13 17:21:57,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:21:57,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:21:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:21:57,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:21:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:21:57,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:21:57,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 853 transitions, 20860 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:21:57,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:21:57,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:21:57,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:22:31,959 INFO L130 PetriNetUnfolder]: 72611/111864 cut-off events. [2022-12-13 17:22:31,959 INFO L131 PetriNetUnfolder]: For 7624873/7624873 co-relation queries the response was YES. [2022-12-13 17:22:33,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986097 conditions, 111864 events. 72611/111864 cut-off events. For 7624873/7624873 co-relation queries the response was YES. Maximal size of possible extension queue 3495. Compared 936175 event pairs, 6924 based on Foata normal form. 1348/113212 useless extension candidates. Maximal degree in co-relation 985979. Up to 48544 conditions per place. [2022-12-13 17:22:33,830 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 768 selfloop transitions, 614 changer transitions 0/1382 dead transitions. [2022-12-13 17:22:33,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1382 transitions, 29651 flow [2022-12-13 17:22:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:22:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 17:22:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2938 transitions. [2022-12-13 17:22:33,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4808510638297872 [2022-12-13 17:22:33,834 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2938 transitions. [2022-12-13 17:22:33,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2938 transitions. [2022-12-13 17:22:33,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:22:33,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2938 transitions. [2022-12-13 17:22:33,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 113.0) internal successors, (2938), 26 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:22:33,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:22:33,842 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 235.0) internal successors, (6345), 27 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:22:33,842 INFO L175 Difference]: Start difference. First operand has 283 places, 853 transitions, 20860 flow. Second operand 26 states and 2938 transitions. [2022-12-13 17:22:33,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1382 transitions, 29651 flow [2022-12-13 17:25:24,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1382 transitions, 28842 flow, removed 367 selfloop flow, removed 9 redundant places. [2022-12-13 17:25:24,141 INFO L231 Difference]: Finished difference. Result has 310 places, 960 transitions, 24742 flow [2022-12-13 17:25:24,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=20115, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=529, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=24742, PETRI_PLACES=310, PETRI_TRANSITIONS=960} [2022-12-13 17:25:24,141 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 281 predicate places. [2022-12-13 17:25:24,141 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 960 transitions, 24742 flow [2022-12-13 17:25:24,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:25:24,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:25:24,142 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:25:24,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 17:25:24,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:24,343 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 17:25:24,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:25:24,344 INFO L85 PathProgramCache]: Analyzing trace with hash -17580029, now seen corresponding path program 3 times [2022-12-13 17:25:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:25:24,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418873931] [2022-12-13 17:25:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:25:24,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:25:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:25:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:25:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:25:24,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418873931] [2022-12-13 17:25:24,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418873931] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:25:24,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058706103] [2022-12-13 17:25:24,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:25:24,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:25:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:25:24,454 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:25:24,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d653ddd-5580-4c1a-bf3a-8149957608e3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 17:25:24,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 17:25:24,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:25:24,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:25:24,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:25:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:25:24,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:25:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:25:24,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058706103] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:25:24,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:25:24,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-13 17:25:24,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883980855] [2022-12-13 17:25:24,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:25:24,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 17:25:24,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:25:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 17:25:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2022-12-13 17:25:24,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 235 [2022-12-13 17:25:24,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 960 transitions, 24742 flow. Second operand has 29 states, 29 states have (on average 104.55172413793103) internal successors, (3032), 29 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:25:24,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:25:24,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 235 [2022-12-13 17:25:24,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:26:15,220 INFO L130 PetriNetUnfolder]: 94869/146389 cut-off events. [2022-12-13 17:26:15,220 INFO L131 PetriNetUnfolder]: For 11383039/11383039 co-relation queries the response was YES. [2022-12-13 17:26:17,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333850 conditions, 146389 events. 94869/146389 cut-off events. For 11383039/11383039 co-relation queries the response was YES. Maximal size of possible extension queue 4684. Compared 1263769 event pairs, 5225 based on Foata normal form. 1647/148036 useless extension candidates. Maximal degree in co-relation 1333720. Up to 49570 conditions per place. [2022-12-13 17:26:18,018 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 831 selfloop transitions, 1014 changer transitions 0/1845 dead transitions. [2022-12-13 17:26:18,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1845 transitions, 41325 flow [2022-12-13 17:26:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 17:26:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 17:26:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3823 transitions. [2022-12-13 17:26:18,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47847309136420524 [2022-12-13 17:26:18,023 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3823 transitions. [2022-12-13 17:26:18,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3823 transitions. [2022-12-13 17:26:18,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:26:18,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3823 transitions. [2022-12-13 17:26:18,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 112.44117647058823) internal successors, (3823), 34 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:18,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 235.0) internal successors, (8225), 35 states have internal predecessors, (8225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:18,033 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 235.0) internal successors, (8225), 35 states have internal predecessors, (8225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:26:18,033 INFO L175 Difference]: Start difference. First operand has 310 places, 960 transitions, 24742 flow. Second operand 34 states and 3823 transitions. [2022-12-13 17:26:18,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1845 transitions, 41325 flow