./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/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_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/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_1f4c898e-8017-45a5-b72b-3eb89f2e342f/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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- 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 16:07:59,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:07:59,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:07:59,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:07:59,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:07:59,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:07:59,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:07:59,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:07:59,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:07:59,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:07:59,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:07:59,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:07:59,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:07:59,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:07:59,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:07:59,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:07:59,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:07:59,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:07:59,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:07:59,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:07:59,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:07:59,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:07:59,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:07:59,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:07:59,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:07:59,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:07:59,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:07:59,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:07:59,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:07:59,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:07:59,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:07:59,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:07:59,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:07:59,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:07:59,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:07:59,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:07:59,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:07:59,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:07:59,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:07:59,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:07:59,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:07:59,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:07:59,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:07:59,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:07:59,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:07:59,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:07:59,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:07:59,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:07:59,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:07:59,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:07:59,631 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:07:59,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:07:59,632 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:07:59,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:07:59,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:07:59,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:07:59,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:07:59,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:07:59,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:07:59,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:07:59,633 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:07:59,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:07:59,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:07:59,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:07:59,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:07:59,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:07:59,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:07:59,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:07:59,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:07:59,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:07:59,635 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:07:59,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:07:59,636 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:07:59,636 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_1f4c898e-8017-45a5-b72b-3eb89f2e342f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2022-12-13 16:07:59,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:07:59,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:07:59,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:07:59,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:07:59,862 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:07:59,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-longest-1.i [2022-12-13 16:08:02,485 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:08:02,637 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:08:02,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/sv-benchmarks/c/pthread/triangular-longest-1.i [2022-12-13 16:08:02,647 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/data/d7a93552f/b47d77ac184a4d1e9c9bef1d89ecc824/FLAG2383674e3 [2022-12-13 16:08:02,658 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/data/d7a93552f/b47d77ac184a4d1e9c9bef1d89ecc824 [2022-12-13 16:08:02,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:08:02,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:08:02,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:08:02,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:08:02,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:08:02,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2f70da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02, skipping insertion in model container [2022-12-13 16:08:02,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:08:02,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:08:02,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,890 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,898 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,899 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_1f4c898e-8017-45a5-b72b-3eb89f2e342f/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2022-12-13 16:08:02,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:08:02,906 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:08:02,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,928 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,930 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,931 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,932 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:08:02,933 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:08:02,933 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_1f4c898e-8017-45a5-b72b-3eb89f2e342f/sv-benchmarks/c/pthread/triangular-longest-1.i[30962,30975] [2022-12-13 16:08:02,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:08:02,953 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:08:02,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02 WrapperNode [2022-12-13 16:08:02,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:08:02,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:08:02,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:08:02,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:08:02,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,982 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-13 16:08:02,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:08:02,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:08:02,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:08:02,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:08:02,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,997 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:02,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:08:03,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:08:03,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:08:03,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:08:03,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (1/1) ... [2022-12-13 16:08:03,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:08:03,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:03,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:08:03,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:08:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 16:08:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 16:08:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 16:08:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 16:08:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:08:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:08:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:08:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:08:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:08:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:08:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:08:03,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:08:03,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:08:03,063 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 16:08:03,151 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:08:03,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:08:03,277 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:08:03,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:08:03,295 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 16:08:03,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:08:03 BoogieIcfgContainer [2022-12-13 16:08:03,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:08:03,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:08:03,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:08:03,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:08:03,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:08:02" (1/3) ... [2022-12-13 16:08:03,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6165c025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:08:03, skipping insertion in model container [2022-12-13 16:08:03,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:08:02" (2/3) ... [2022-12-13 16:08:03,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6165c025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:08:03, skipping insertion in model container [2022-12-13 16:08:03,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:08:03" (3/3) ... [2022-12-13 16:08:03,306 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2022-12-13 16:08:03,314 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:08:03,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:08:03,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 16:08:03,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:08:03,373 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 16:08:03,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 172 flow [2022-12-13 16:08:03,438 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-12-13 16:08:03,438 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:08:03,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-12-13 16:08:03,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 172 flow [2022-12-13 16:08:03,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 164 flow [2022-12-13 16:08:03,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:08:03,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 164 flow [2022-12-13 16:08:03,466 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 164 flow [2022-12-13 16:08:03,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 164 flow [2022-12-13 16:08:03,479 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-12-13 16:08:03,480 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:08:03,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 5/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-12-13 16:08:03,481 INFO L119 LiptonReduction]: Number of co-enabled transitions 1870 [2022-12-13 16:08:05,268 INFO L134 LiptonReduction]: Checked pairs total: 1902 [2022-12-13 16:08:05,268 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-12-13 16:08:05,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:08:05,283 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;@75e96090, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:08:05,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 16:08:05,288 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-12-13 16:08:05,288 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:08:05,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:05,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:08:05,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 10267181, now seen corresponding path program 1 times [2022-12-13 16:08:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:05,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120684973] [2022-12-13 16:08:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:05,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:05,467 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 16:08:05,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:05,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120684973] [2022-12-13 16:08:05,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120684973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:05,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:05,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:08:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272397211] [2022-12-13 16:08:05,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:05,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 16:08:05,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 16:08:05,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:05,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 16:08:05,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:05,587 INFO L130 PetriNetUnfolder]: 300/479 cut-off events. [2022-12-13 16:08:05,587 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:08:05,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 479 events. 300/479 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1859 event pairs, 115 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 964. Up to 256 conditions per place. [2022-12-13 16:08:05,590 INFO L137 encePairwiseOnDemand]: 149/157 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2022-12-13 16:08:05,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 126 flow [2022-12-13 16:08:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2022-12-13 16:08:05,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5180467091295117 [2022-12-13 16:08:05,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2022-12-13 16:08:05,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2022-12-13 16:08:05,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:05,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2022-12-13 16:08:05,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 16:08:05,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:05,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:05,609 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 48 flow. Second operand 3 states and 244 transitions. [2022-12-13 16:08:05,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 126 flow [2022-12-13 16:08:05,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:08:05,612 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 70 flow [2022-12-13 16:08:05,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2022-12-13 16:08:05,615 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2022-12-13 16:08:05,615 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 70 flow [2022-12-13 16:08:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 16:08:05,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:05,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:08:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:08:05,616 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 10267182, now seen corresponding path program 1 times [2022-12-13 16:08:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:05,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617487069] [2022-12-13 16:08:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:05,652 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 16:08:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:05,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617487069] [2022-12-13 16:08:05,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617487069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:05,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:05,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:08:05,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376480383] [2022-12-13 16:08:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:05,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:05,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 16:08:05,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 16:08:05,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:05,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 16:08:05,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:05,736 INFO L130 PetriNetUnfolder]: 291/480 cut-off events. [2022-12-13 16:08:05,736 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2022-12-13 16:08:05,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 480 events. 291/480 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1909 event pairs, 99 based on Foata normal form. 17/325 useless extension candidates. Maximal degree in co-relation 1111. Up to 281 conditions per place. [2022-12-13 16:08:05,740 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2022-12-13 16:08:05,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 170 flow [2022-12-13 16:08:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 16:08:05,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-12-13 16:08:05,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 16:08:05,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 16:08:05,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:05,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 16:08:05,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 16:08:05,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:05,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:05,744 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 70 flow. Second operand 3 states and 237 transitions. [2022-12-13 16:08:05,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 170 flow [2022-12-13 16:08:05,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:08:05,745 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 100 flow [2022-12-13 16:08:05,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2022-12-13 16:08:05,745 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2022-12-13 16:08:05,745 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 100 flow [2022-12-13 16:08:05,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 16:08:05,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:05,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:08:05,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:08:05,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:05,746 INFO L85 PathProgramCache]: Analyzing trace with hash 10267217, now seen corresponding path program 1 times [2022-12-13 16:08:05,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:05,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994558836] [2022-12-13 16:08:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:05,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:05,794 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 16:08:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:05,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994558836] [2022-12-13 16:08:05,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994558836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:05,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:05,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:08:05,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760790559] [2022-12-13 16:08:05,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:05,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-12-13 16:08:05,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 16:08:05,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:05,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-12-13 16:08:05,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:05,870 INFO L130 PetriNetUnfolder]: 416/697 cut-off events. [2022-12-13 16:08:05,870 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-12-13 16:08:05,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 697 events. 416/697 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3190 event pairs, 223 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 1748. Up to 481 conditions per place. [2022-12-13 16:08:05,873 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2022-12-13 16:08:05,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 43 transitions, 269 flow [2022-12-13 16:08:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2022-12-13 16:08:05,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5031847133757962 [2022-12-13 16:08:05,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2022-12-13 16:08:05,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2022-12-13 16:08:05,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:05,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2022-12-13 16:08:05,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 16:08:05,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:05,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:05,877 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 100 flow. Second operand 3 states and 237 transitions. [2022-12-13 16:08:05,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 43 transitions, 269 flow [2022-12-13 16:08:05,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:05,878 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 108 flow [2022-12-13 16:08:05,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2022-12-13 16:08:05,879 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2022-12-13 16:08:05,879 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 108 flow [2022-12-13 16:08:05,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 16:08:05,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:05,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:08:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:08:05,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash 318284178, now seen corresponding path program 1 times [2022-12-13 16:08:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:05,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154851137] [2022-12-13 16:08:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:05,929 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 16:08:05,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154851137] [2022-12-13 16:08:05,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154851137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903617177] [2022-12-13 16:08:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:05,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:05,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:05,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:05,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:08:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:05,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:08:05,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:06,015 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 16:08:06,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:08:06,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903617177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:06,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:08:06,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:08:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809320136] [2022-12-13 16:08:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:06,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:06,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:08:06,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-12-13 16:08:06,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 16:08:06,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:06,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-12-13 16:08:06,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:06,134 INFO L130 PetriNetUnfolder]: 361/610 cut-off events. [2022-12-13 16:08:06,135 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2022-12-13 16:08:06,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 610 events. 361/610 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2877 event pairs, 18 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 1666. Up to 336 conditions per place. [2022-12-13 16:08:06,139 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 16:08:06,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 54 transitions, 330 flow [2022-12-13 16:08:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:08:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:08:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2022-12-13 16:08:06,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4984076433121019 [2022-12-13 16:08:06,141 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2022-12-13 16:08:06,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2022-12-13 16:08:06,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:06,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2022-12-13 16:08:06,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 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 16:08:06,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 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 16:08:06,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 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 16:08:06,145 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 108 flow. Second operand 4 states and 313 transitions. [2022-12-13 16:08:06,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 54 transitions, 330 flow [2022-12-13 16:08:06,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:06,148 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 106 flow [2022-12-13 16:08:06,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-12-13 16:08:06,148 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2022-12-13 16:08:06,149 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 106 flow [2022-12-13 16:08:06,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 16:08:06,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:06,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:06,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:08:06,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:06,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash 945663873, now seen corresponding path program 1 times [2022-12-13 16:08:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:06,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230178933] [2022-12-13 16:08:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:06,413 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 16:08:06,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:06,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230178933] [2022-12-13 16:08:06,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230178933] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:06,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875980922] [2022-12-13 16:08:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:06,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:06,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:06,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:08:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:06,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:08:06,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:06,473 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 16:08:06,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:08:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875980922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:06,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:08:06,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:08:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988509347] [2022-12-13 16:08:06,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:06,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:08:06,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 157 [2022-12-13 16:08:06,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 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 16:08:06,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:06,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 157 [2022-12-13 16:08:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:06,546 INFO L130 PetriNetUnfolder]: 301/514 cut-off events. [2022-12-13 16:08:06,547 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-12-13 16:08:06,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1388 conditions, 514 events. 301/514 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2186 event pairs, 48 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 1374. Up to 380 conditions per place. [2022-12-13 16:08:06,548 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 32 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2022-12-13 16:08:06,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 206 flow [2022-12-13 16:08:06,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:08:06,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:08:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2022-12-13 16:08:06,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4840764331210191 [2022-12-13 16:08:06,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2022-12-13 16:08:06,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2022-12-13 16:08:06,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:06,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2022-12-13 16:08:06,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 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 16:08:06,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 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 16:08:06,552 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 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 16:08:06,552 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 106 flow. Second operand 4 states and 304 transitions. [2022-12-13 16:08:06,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 206 flow [2022-12-13 16:08:06,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:08:06,553 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 87 flow [2022-12-13 16:08:06,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2022-12-13 16:08:06,554 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-13 16:08:06,554 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 87 flow [2022-12-13 16:08:06,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 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 16:08:06,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:06,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:08:06,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:08:06,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:06,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:06,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1277431228, now seen corresponding path program 1 times [2022-12-13 16:08:06,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:06,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427254056] [2022-12-13 16:08:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:06,851 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 16:08:06,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:06,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427254056] [2022-12-13 16:08:06,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427254056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:06,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:06,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:08:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359051991] [2022-12-13 16:08:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:06,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:06,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 16:08:06,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 16:08:06,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:06,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 16:08:06,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:06,942 INFO L130 PetriNetUnfolder]: 259/454 cut-off events. [2022-12-13 16:08:06,942 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-12-13 16:08:06,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 454 events. 259/454 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 1975 event pairs, 103 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 1276. Up to 239 conditions per place. [2022-12-13 16:08:06,949 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2022-12-13 16:08:06,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 35 transitions, 223 flow [2022-12-13 16:08:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2022-12-13 16:08:06,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5010615711252654 [2022-12-13 16:08:06,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2022-12-13 16:08:06,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2022-12-13 16:08:06,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:06,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2022-12-13 16:08:06,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 16:08:06,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:06,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:06,951 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 87 flow. Second operand 3 states and 236 transitions. [2022-12-13 16:08:06,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 35 transitions, 223 flow [2022-12-13 16:08:06,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:06,953 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 114 flow [2022-12-13 16:08:06,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2022-12-13 16:08:06,953 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-12-13 16:08:06,953 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 114 flow [2022-12-13 16:08:06,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 16:08:06,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:06,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:08:06,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:08:06,954 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:06,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1277431229, now seen corresponding path program 1 times [2022-12-13 16:08:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:06,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133797821] [2022-12-13 16:08:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:06,977 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 16:08:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:06,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133797821] [2022-12-13 16:08:06,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133797821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:06,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:06,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:08:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819676755] [2022-12-13 16:08:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:08:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:08:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:08:06,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2022-12-13 16:08:06,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 16:08:06,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:06,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2022-12-13 16:08:06,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,035 INFO L130 PetriNetUnfolder]: 237/426 cut-off events. [2022-12-13 16:08:07,035 INFO L131 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2022-12-13 16:08:07,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 426 events. 237/426 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1885 event pairs, 75 based on Foata normal form. 24/450 useless extension candidates. Maximal degree in co-relation 1358. Up to 263 conditions per place. [2022-12-13 16:08:07,039 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 31 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2022-12-13 16:08:07,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 245 flow [2022-12-13 16:08:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2022-12-13 16:08:07,041 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4989384288747346 [2022-12-13 16:08:07,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2022-12-13 16:08:07,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2022-12-13 16:08:07,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:07,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2022-12-13 16:08:07,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:07,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:07,044 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 114 flow. Second operand 3 states and 235 transitions. [2022-12-13 16:08:07,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 245 flow [2022-12-13 16:08:07,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:08:07,046 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 122 flow [2022-12-13 16:08:07,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2022-12-13 16:08:07,046 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2022-12-13 16:08:07,046 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 122 flow [2022-12-13 16:08:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 16:08:07,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:07,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:07,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:08:07,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash -716667321, now seen corresponding path program 1 times [2022-12-13 16:08:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:07,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047118817] [2022-12-13 16:08:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:07,078 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 16:08:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:07,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047118817] [2022-12-13 16:08:07,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047118817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:07,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:07,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:08:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839172185] [2022-12-13 16:08:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:08:07,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:07,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:07,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,186 INFO L130 PetriNetUnfolder]: 281/500 cut-off events. [2022-12-13 16:08:07,186 INFO L131 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2022-12-13 16:08:07,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 500 events. 281/500 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2209 event pairs, 61 based on Foata normal form. 30/530 useless extension candidates. Maximal degree in co-relation 1618. Up to 216 conditions per place. [2022-12-13 16:08:07,190 INFO L137 encePairwiseOnDemand]: 150/157 looper letters, 39 selfloop transitions, 9 changer transitions 0/48 dead transitions. [2022-12-13 16:08:07,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 48 transitions, 334 flow [2022-12-13 16:08:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:08:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:08:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2022-12-13 16:08:07,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48152866242038217 [2022-12-13 16:08:07,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2022-12-13 16:08:07,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2022-12-13 16:08:07,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:07,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2022-12-13 16:08:07,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 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 16:08:07,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,195 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 122 flow. Second operand 5 states and 378 transitions. [2022-12-13 16:08:07,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 48 transitions, 334 flow [2022-12-13 16:08:07,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:07,198 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 210 flow [2022-12-13 16:08:07,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2022-12-13 16:08:07,199 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2022-12-13 16:08:07,199 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 210 flow [2022-12-13 16:08:07,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:07,199 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:08:07,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -716667320, now seen corresponding path program 1 times [2022-12-13 16:08:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:07,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164420588] [2022-12-13 16:08:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:07,229 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 16:08:07,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:07,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164420588] [2022-12-13 16:08:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164420588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:07,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:07,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:08:07,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945310278] [2022-12-13 16:08:07,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:07,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:07,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:08:07,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:07,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:07,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:07,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,325 INFO L130 PetriNetUnfolder]: 301/532 cut-off events. [2022-12-13 16:08:07,325 INFO L131 PetriNetUnfolder]: For 815/815 co-relation queries the response was YES. [2022-12-13 16:08:07,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 532 events. 301/532 cut-off events. For 815/815 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2334 event pairs, 47 based on Foata normal form. 18/550 useless extension candidates. Maximal degree in co-relation 1891. Up to 251 conditions per place. [2022-12-13 16:08:07,329 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 40 selfloop transitions, 12 changer transitions 1/53 dead transitions. [2022-12-13 16:08:07,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 433 flow [2022-12-13 16:08:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:08:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:08:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2022-12-13 16:08:07,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4764331210191083 [2022-12-13 16:08:07,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2022-12-13 16:08:07,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2022-12-13 16:08:07,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:07,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2022-12-13 16:08:07,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 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 16:08:07,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,332 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 210 flow. Second operand 5 states and 374 transitions. [2022-12-13 16:08:07,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 433 flow [2022-12-13 16:08:07,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 429 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 16:08:07,335 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 280 flow [2022-12-13 16:08:07,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2022-12-13 16:08:07,335 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 21 predicate places. [2022-12-13 16:08:07,335 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 280 flow [2022-12-13 16:08:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:07,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:08:07,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash -716667564, now seen corresponding path program 1 times [2022-12-13 16:08:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435358520] [2022-12-13 16:08:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:07,367 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 16:08:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:07,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435358520] [2022-12-13 16:08:07,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435358520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:07,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:07,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:08:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525832108] [2022-12-13 16:08:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:08:07,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:07,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:07,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:07,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,433 INFO L130 PetriNetUnfolder]: 232/400 cut-off events. [2022-12-13 16:08:07,434 INFO L131 PetriNetUnfolder]: For 1018/1018 co-relation queries the response was YES. [2022-12-13 16:08:07,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 400 events. 232/400 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1507 event pairs, 161 based on Foata normal form. 30/430 useless extension candidates. Maximal degree in co-relation 1503. Up to 400 conditions per place. [2022-12-13 16:08:07,437 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-12-13 16:08:07,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 27 transitions, 261 flow [2022-12-13 16:08:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-12-13 16:08:07,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4607218683651805 [2022-12-13 16:08:07,438 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-12-13 16:08:07,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-12-13 16:08:07,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:07,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-12-13 16:08:07,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 16:08:07,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:07,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 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 16:08:07,440 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 280 flow. Second operand 3 states and 217 transitions. [2022-12-13 16:08:07,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 27 transitions, 261 flow [2022-12-13 16:08:07,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 237 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-12-13 16:08:07,444 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 185 flow [2022-12-13 16:08:07,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-12-13 16:08:07,445 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 14 predicate places. [2022-12-13 16:08:07,445 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 185 flow [2022-12-13 16:08:07,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:07,445 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:07,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:08:07,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -716667563, now seen corresponding path program 1 times [2022-12-13 16:08:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:07,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977382055] [2022-12-13 16:08:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:07,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:07,473 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 16:08:07,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:07,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977382055] [2022-12-13 16:08:07,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977382055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:07,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:08:07,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:08:07,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148083397] [2022-12-13 16:08:07,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:07,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:07,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:08:07,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:07,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:07,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:07,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,544 INFO L130 PetriNetUnfolder]: 252/432 cut-off events. [2022-12-13 16:08:07,545 INFO L131 PetriNetUnfolder]: For 538/538 co-relation queries the response was YES. [2022-12-13 16:08:07,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 432 events. 252/432 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1653 event pairs, 47 based on Foata normal form. 18/450 useless extension candidates. Maximal degree in co-relation 1519. Up to 315 conditions per place. [2022-12-13 16:08:07,546 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 38 selfloop transitions, 5 changer transitions 2/45 dead transitions. [2022-12-13 16:08:07,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 345 flow [2022-12-13 16:08:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:08:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:08:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2022-12-13 16:08:07,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726114649681529 [2022-12-13 16:08:07,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2022-12-13 16:08:07,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2022-12-13 16:08:07,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:07,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2022-12-13 16:08:07,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 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 16:08:07,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,549 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,549 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 185 flow. Second operand 5 states and 371 transitions. [2022-12-13 16:08:07,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 345 flow [2022-12-13 16:08:07,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 340 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:07,551 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 206 flow [2022-12-13 16:08:07,552 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2022-12-13 16:08:07,552 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2022-12-13 16:08:07,552 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 206 flow [2022-12-13 16:08:07,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 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 16:08:07,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:07,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:07,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:08:07,552 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -741849032, now seen corresponding path program 1 times [2022-12-13 16:08:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:07,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054208348] [2022-12-13 16:08:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:07,583 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 16:08:07,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054208348] [2022-12-13 16:08:07,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054208348] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886724618] [2022-12-13 16:08:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:07,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:07,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:07,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:08:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:07,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:08:07,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:07,658 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 16:08:07,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:07,683 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 16:08:07,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886724618] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:07,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:07,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:08:07,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035027356] [2022-12-13 16:08:07,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:07,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:08:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:08:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:08:07,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:07,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 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 16:08:07,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:07,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:07,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,847 INFO L130 PetriNetUnfolder]: 361/622 cut-off events. [2022-12-13 16:08:07,847 INFO L131 PetriNetUnfolder]: For 1525/1525 co-relation queries the response was YES. [2022-12-13 16:08:07,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 622 events. 361/622 cut-off events. For 1525/1525 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2516 event pairs, 41 based on Foata normal form. 90/712 useless extension candidates. Maximal degree in co-relation 2281. Up to 203 conditions per place. [2022-12-13 16:08:07,850 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 44 selfloop transitions, 22 changer transitions 9/75 dead transitions. [2022-12-13 16:08:07,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 608 flow [2022-12-13 16:08:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:08:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:08:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 666 transitions. [2022-12-13 16:08:07,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4713375796178344 [2022-12-13 16:08:07,851 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 666 transitions. [2022-12-13 16:08:07,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 666 transitions. [2022-12-13 16:08:07,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:07,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 666 transitions. [2022-12-13 16:08:07,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:07,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 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 16:08:07,854 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 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 16:08:07,854 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 206 flow. Second operand 9 states and 666 transitions. [2022-12-13 16:08:07,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 608 flow [2022-12-13 16:08:07,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 599 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:07,857 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 461 flow [2022-12-13 16:08:07,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=461, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2022-12-13 16:08:07,857 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 33 predicate places. [2022-12-13 16:08:07,857 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 461 flow [2022-12-13 16:08:07,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 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 16:08:07,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:07,858 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:07,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:08:08,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:08,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash 40541883, now seen corresponding path program 1 times [2022-12-13 16:08:08,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:08,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913016734] [2022-12-13 16:08:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:08,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:08,112 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 16:08:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:08,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913016734] [2022-12-13 16:08:08,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913016734] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:08,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979262898] [2022-12-13 16:08:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:08,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:08,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:08,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:08,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:08:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:08,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:08:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:08,188 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 16:08:08,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:08,230 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 16:08:08,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979262898] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:08,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:08,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 16:08:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749675510] [2022-12-13 16:08:08,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 16:08:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 16:08:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:08:08,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:08,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 461 flow. Second operand has 12 states, 12 states have (on average 68.83333333333333) internal successors, (826), 12 states have internal predecessors, (826), 0 states have call successors, (0), 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 16:08:08,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:08,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:08,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:08,486 INFO L130 PetriNetUnfolder]: 481/826 cut-off events. [2022-12-13 16:08:08,486 INFO L131 PetriNetUnfolder]: For 4628/4628 co-relation queries the response was YES. [2022-12-13 16:08:08,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 826 events. 481/826 cut-off events. For 4628/4628 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3329 event pairs, 33 based on Foata normal form. 86/912 useless extension candidates. Maximal degree in co-relation 3802. Up to 299 conditions per place. [2022-12-13 16:08:08,490 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 62 selfloop transitions, 37 changer transitions 18/117 dead transitions. [2022-12-13 16:08:08,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 117 transitions, 1171 flow [2022-12-13 16:08:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:08:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 16:08:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1031 transitions. [2022-12-13 16:08:08,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46906278434940857 [2022-12-13 16:08:08,492 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1031 transitions. [2022-12-13 16:08:08,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1031 transitions. [2022-12-13 16:08:08,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:08,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1031 transitions. [2022-12-13 16:08:08,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.64285714285714) internal successors, (1031), 14 states have internal predecessors, (1031), 0 states have call successors, (0), 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 16:08:08,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 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 16:08:08,496 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 157.0) internal successors, (2355), 15 states have internal predecessors, (2355), 0 states have call successors, (0), 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 16:08:08,496 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 461 flow. Second operand 14 states and 1031 transitions. [2022-12-13 16:08:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 117 transitions, 1171 flow [2022-12-13 16:08:08,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 1076 flow, removed 44 selfloop flow, removed 2 redundant places. [2022-12-13 16:08:08,503 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 743 flow [2022-12-13 16:08:08,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=743, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2022-12-13 16:08:08,504 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 53 predicate places. [2022-12-13 16:08:08,504 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 743 flow [2022-12-13 16:08:08,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.83333333333333) internal successors, (826), 12 states have internal predecessors, (826), 0 states have call successors, (0), 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 16:08:08,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:08,504 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:08,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:08:08,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:08:08,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1405692024, now seen corresponding path program 2 times [2022-12-13 16:08:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:08,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844054660] [2022-12-13 16:08:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:08,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:08,775 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 16:08:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:08,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844054660] [2022-12-13 16:08:08,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844054660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:08,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037550430] [2022-12-13 16:08:08,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:08:08,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:08,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:08,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:08,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:08:08,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:08:08,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:08:08,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:08:08,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:08,852 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 16:08:08,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:08,913 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 16:08:08,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037550430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:08,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:08,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 16:08:08,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930482753] [2022-12-13 16:08:08,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:08:08,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:08:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:08:08,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:08,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 743 flow. Second operand has 16 states, 16 states have (on average 68.625) internal successors, (1098), 16 states have internal predecessors, (1098), 0 states have call successors, (0), 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 16:08:08,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:08,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:08,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:09,339 INFO L130 PetriNetUnfolder]: 761/1306 cut-off events. [2022-12-13 16:08:09,340 INFO L131 PetriNetUnfolder]: For 9859/9859 co-relation queries the response was YES. [2022-12-13 16:08:09,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 1306 events. 761/1306 cut-off events. For 9859/9859 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5628 event pairs, 57 based on Foata normal form. 68/1374 useless extension candidates. Maximal degree in co-relation 6408. Up to 499 conditions per place. [2022-12-13 16:08:09,349 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 74 selfloop transitions, 67 changer transitions 30/171 dead transitions. [2022-12-13 16:08:09,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 171 transitions, 1963 flow [2022-12-13 16:08:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 16:08:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 16:08:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1391 transitions. [2022-12-13 16:08:09,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4663090848139457 [2022-12-13 16:08:09,362 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1391 transitions. [2022-12-13 16:08:09,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1391 transitions. [2022-12-13 16:08:09,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:09,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1391 transitions. [2022-12-13 16:08:09,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 73.21052631578948) internal successors, (1391), 19 states have internal predecessors, (1391), 0 states have call successors, (0), 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 16:08:09,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 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 16:08:09,368 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 157.0) internal successors, (3140), 20 states have internal predecessors, (3140), 0 states have call successors, (0), 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 16:08:09,368 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 743 flow. Second operand 19 states and 1391 transitions. [2022-12-13 16:08:09,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 171 transitions, 1963 flow [2022-12-13 16:08:09,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1904 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-12-13 16:08:09,386 INFO L231 Difference]: Finished difference. Result has 103 places, 105 transitions, 1415 flow [2022-12-13 16:08:09,386 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1415, PETRI_PLACES=103, PETRI_TRANSITIONS=105} [2022-12-13 16:08:09,386 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 78 predicate places. [2022-12-13 16:08:09,387 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 105 transitions, 1415 flow [2022-12-13 16:08:09,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 68.625) internal successors, (1098), 16 states have internal predecessors, (1098), 0 states have call successors, (0), 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 16:08:09,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:09,387 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:09,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:08:09,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:08:09,588 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1302187749, now seen corresponding path program 2 times [2022-12-13 16:08:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898203298] [2022-12-13 16:08:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:09,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898203298] [2022-12-13 16:08:09,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898203298] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:09,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717118183] [2022-12-13 16:08:09,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:08:09,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:09,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:09,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:09,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:08:09,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:08:09,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:08:09,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 16:08:09,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:09,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717118183] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:09,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:09,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-12-13 16:08:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819549527] [2022-12-13 16:08:09,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:09,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 16:08:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 16:08:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-12-13 16:08:09,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:09,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 105 transitions, 1415 flow. Second operand has 28 states, 28 states have (on average 68.35714285714286) internal successors, (1914), 28 states have internal predecessors, (1914), 0 states have call successors, (0), 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 16:08:09,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:09,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:09,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:10,730 INFO L130 PetriNetUnfolder]: 1429/2466 cut-off events. [2022-12-13 16:08:10,730 INFO L131 PetriNetUnfolder]: For 30292/30292 co-relation queries the response was YES. [2022-12-13 16:08:10,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13149 conditions, 2466 events. 1429/2466 cut-off events. For 30292/30292 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11198 event pairs, 67 based on Foata normal form. 156/2622 useless extension candidates. Maximal degree in co-relation 13098. Up to 991 conditions per place. [2022-12-13 16:08:10,741 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 132 selfloop transitions, 131 changer transitions 58/321 dead transitions. [2022-12-13 16:08:10,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 321 transitions, 4017 flow [2022-12-13 16:08:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 16:08:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 16:08:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2492 transitions. [2022-12-13 16:08:10,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668415136755339 [2022-12-13 16:08:10,745 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2492 transitions. [2022-12-13 16:08:10,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2492 transitions. [2022-12-13 16:08:10,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:10,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2492 transitions. [2022-12-13 16:08:10,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 73.29411764705883) internal successors, (2492), 34 states have internal predecessors, (2492), 0 states have call successors, (0), 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 16:08:10,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 157.0) internal successors, (5495), 35 states have internal predecessors, (5495), 0 states have call successors, (0), 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 16:08:10,753 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 157.0) internal successors, (5495), 35 states have internal predecessors, (5495), 0 states have call successors, (0), 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 16:08:10,754 INFO L175 Difference]: Start difference. First operand has 103 places, 105 transitions, 1415 flow. Second operand 34 states and 2492 transitions. [2022-12-13 16:08:10,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 321 transitions, 4017 flow [2022-12-13 16:08:10,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 321 transitions, 3942 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-12-13 16:08:10,815 INFO L231 Difference]: Finished difference. Result has 154 places, 189 transitions, 3059 flow [2022-12-13 16:08:10,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3059, PETRI_PLACES=154, PETRI_TRANSITIONS=189} [2022-12-13 16:08:10,816 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 129 predicate places. [2022-12-13 16:08:10,816 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 189 transitions, 3059 flow [2022-12-13 16:08:10,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 68.35714285714286) internal successors, (1914), 28 states have internal predecessors, (1914), 0 states have call successors, (0), 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 16:08:10,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:10,817 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:10,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:08:11,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:11,018 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1283949768, now seen corresponding path program 3 times [2022-12-13 16:08:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:11,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57022763] [2022-12-13 16:08:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:11,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57022763] [2022-12-13 16:08:11,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57022763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:11,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413981967] [2022-12-13 16:08:11,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:08:11,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:11,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:11,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:08:11,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-13 16:08:11,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:08:11,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 16:08:11,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:11,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:11,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413981967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:11,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:11,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-13 16:08:11,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31036601] [2022-12-13 16:08:11,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:11,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 16:08:11,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 16:08:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 16:08:11,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:11,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 189 transitions, 3059 flow. Second operand has 48 states, 48 states have (on average 68.20833333333333) internal successors, (3274), 48 states have internal predecessors, (3274), 0 states have call successors, (0), 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 16:08:11,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:11,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:11,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:14,006 INFO L130 PetriNetUnfolder]: 2885/5042 cut-off events. [2022-12-13 16:08:14,006 INFO L131 PetriNetUnfolder]: For 110990/110990 co-relation queries the response was YES. [2022-12-13 16:08:14,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28563 conditions, 5042 events. 2885/5042 cut-off events. For 110990/110990 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 24636 event pairs, 121 based on Foata normal form. 292/5334 useless extension candidates. Maximal degree in co-relation 28490. Up to 2111 conditions per place. [2022-12-13 16:08:14,033 INFO L137 encePairwiseOnDemand]: 151/157 looper letters, 206 selfloop transitions, 291 changer transitions 110/607 dead transitions. [2022-12-13 16:08:14,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 607 transitions, 8896 flow [2022-12-13 16:08:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-13 16:08:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-12-13 16:08:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 4319 transitions. [2022-12-13 16:08:14,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46626362949368455 [2022-12-13 16:08:14,037 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 4319 transitions. [2022-12-13 16:08:14,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 4319 transitions. [2022-12-13 16:08:14,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:14,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 4319 transitions. [2022-12-13 16:08:14,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 73.20338983050847) internal successors, (4319), 59 states have internal predecessors, (4319), 0 states have call successors, (0), 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 16:08:14,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 157.0) internal successors, (9420), 60 states have internal predecessors, (9420), 0 states have call successors, (0), 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 16:08:14,051 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 157.0) internal successors, (9420), 60 states have internal predecessors, (9420), 0 states have call successors, (0), 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 16:08:14,051 INFO L175 Difference]: Start difference. First operand has 154 places, 189 transitions, 3059 flow. Second operand 59 states and 4319 transitions. [2022-12-13 16:08:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 607 transitions, 8896 flow [2022-12-13 16:08:14,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 607 transitions, 8804 flow, removed 32 selfloop flow, removed 7 redundant places. [2022-12-13 16:08:14,330 INFO L231 Difference]: Finished difference. Result has 240 places, 376 transitions, 7142 flow [2022-12-13 16:08:14,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7142, PETRI_PLACES=240, PETRI_TRANSITIONS=376} [2022-12-13 16:08:14,330 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 215 predicate places. [2022-12-13 16:08:14,331 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 376 transitions, 7142 flow [2022-12-13 16:08:14,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 68.20833333333333) internal successors, (3274), 48 states have internal predecessors, (3274), 0 states have call successors, (0), 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 16:08:14,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:14,332 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:14,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:08:14,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:14,534 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-12-13 16:08:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2052277605, now seen corresponding path program 3 times [2022-12-13 16:08:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:14,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638493696] [2022-12-13 16:08:14,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:15,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:15,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638493696] [2022-12-13 16:08:15,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638493696] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:15,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806516925] [2022-12-13 16:08:15,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:08:15,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:15,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:15,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:15,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:08:15,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-12-13 16:08:15,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:08:15,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 16:08:15,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:08:15,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:08:15,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806516925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:15,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:08:15,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [45] total 69 [2022-12-13 16:08:15,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252968042] [2022-12-13 16:08:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:15,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 16:08:15,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:15,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 16:08:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=850, Invalid=3842, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 16:08:15,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 157 [2022-12-13 16:08:15,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 376 transitions, 7142 flow. Second operand has 24 states, 24 states have (on average 69.125) internal successors, (1659), 24 states have internal predecessors, (1659), 0 states have call successors, (0), 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 16:08:15,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:15,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 157 [2022-12-13 16:08:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:22,562 INFO L130 PetriNetUnfolder]: 22903/33946 cut-off events. [2022-12-13 16:08:22,562 INFO L131 PetriNetUnfolder]: For 243149/243149 co-relation queries the response was YES. [2022-12-13 16:08:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202247 conditions, 33946 events. 22903/33946 cut-off events. For 243149/243149 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 198356 event pairs, 473 based on Foata normal form. 950/34896 useless extension candidates. Maximal degree in co-relation 202149. Up to 19193 conditions per place. [2022-12-13 16:08:22,919 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 0 selfloop transitions, 0 changer transitions 3970/3970 dead transitions. [2022-12-13 16:08:22,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 3970 transitions, 77853 flow [2022-12-13 16:08:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 16:08:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 16:08:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1739 transitions. [2022-12-13 16:08:22,922 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48158404873996125 [2022-12-13 16:08:22,923 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1739 transitions. [2022-12-13 16:08:22,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1739 transitions. [2022-12-13 16:08:22,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:22,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1739 transitions. [2022-12-13 16:08:22,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 75.6086956521739) internal successors, (1739), 23 states have internal predecessors, (1739), 0 states have call successors, (0), 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 16:08:22,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 157.0) internal successors, (3768), 24 states have internal predecessors, (3768), 0 states have call successors, (0), 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 16:08:22,929 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 157.0) internal successors, (3768), 24 states have internal predecessors, (3768), 0 states have call successors, (0), 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 16:08:22,929 INFO L175 Difference]: Start difference. First operand has 240 places, 376 transitions, 7142 flow. Second operand 23 states and 1739 transitions. [2022-12-13 16:08:22,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 3970 transitions, 77853 flow [2022-12-13 16:08:27,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 3970 transitions, 64357 flow, removed 396 selfloop flow, removed 77 redundant places. [2022-12-13 16:08:27,582 INFO L231 Difference]: Finished difference. Result has 177 places, 0 transitions, 0 flow [2022-12-13 16:08:27,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=177, PETRI_TRANSITIONS=0} [2022-12-13 16:08:27,583 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 152 predicate places. [2022-12-13 16:08:27,583 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 0 transitions, 0 flow [2022-12-13 16:08:27,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 69.125) internal successors, (1659), 24 states have internal predecessors, (1659), 0 states have call successors, (0), 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 16:08:27,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 16:08:27,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-12-13 16:08:27,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 16:08:27,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 16:08:27,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 16:08:27,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:08:27,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 16:08:27,788 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:27,801 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:08:27,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:08:27,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:08:27 BasicIcfg [2022-12-13 16:08:27,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:08:27,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:08:27,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:08:27,805 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:08:27,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:08:03" (3/4) ... [2022-12-13 16:08:27,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:08:27,813 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-12-13 16:08:27,813 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-12-13 16:08:27,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 16:08:27,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 16:08:27,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 16:08:27,816 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:08:27,841 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:08:27,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:08:27,842 INFO L158 Benchmark]: Toolchain (without parser) took 25180.98ms. Allocated memory was 140.5MB in the beginning and 2.9GB in the end (delta: 2.8GB). Free memory was 96.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-12-13 16:08:27,842 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:08:27,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.22ms. Allocated memory is still 140.5MB. Free memory was 96.5MB in the beginning and 76.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 16:08:27,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.57ms. Allocated memory is still 140.5MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:08:27,842 INFO L158 Benchmark]: Boogie Preprocessor took 16.64ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 73.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:08:27,843 INFO L158 Benchmark]: RCFGBuilder took 297.75ms. Allocated memory is still 140.5MB. Free memory was 73.3MB in the beginning and 58.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 16:08:27,843 INFO L158 Benchmark]: TraceAbstraction took 24504.86ms. Allocated memory was 140.5MB in the beginning and 2.9GB in the end (delta: 2.8GB). Free memory was 58.2MB in the beginning and 1.5GB in the end (delta: -1.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-12-13 16:08:27,843 INFO L158 Benchmark]: Witness Printer took 36.62ms. Allocated memory is still 2.9GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:08:27,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.22ms. Allocated memory is still 140.5MB. Free memory was 96.5MB in the beginning and 76.6MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.57ms. Allocated memory is still 140.5MB. Free memory was 76.6MB in the beginning and 74.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.64ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 73.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 297.75ms. Allocated memory is still 140.5MB. Free memory was 73.3MB in the beginning and 58.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24504.86ms. Allocated memory was 140.5MB in the beginning and 2.9GB in the end (delta: 2.8GB). Free memory was 58.2MB in the beginning and 1.5GB in the end (delta: -1.5GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 36.62ms. Allocated memory is still 2.9GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 81 PlacesBefore, 25 PlacesAfterwards, 79 TransitionsBefore, 21 TransitionsAfterwards, 1870 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 1902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1609, independent: 1587, independent conditional: 0, independent unconditional: 1587, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1040, independent: 1027, independent conditional: 0, independent unconditional: 1027, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1609, independent: 560, independent conditional: 0, independent unconditional: 560, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1040, unknown conditional: 0, unknown unconditional: 1040] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.4s, OverallIterations: 17, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2890 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2793 mSDsluCounter, 220 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2272 IncrementalHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 37 mSDtfsCounter, 2272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4808 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7142occurred in iteration=16, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1149 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1572 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 30 InterpolantComputations, 12 PerfectInterpolantSequences, 486/1485 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:08:27,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f4c898e-8017-45a5-b72b-3eb89f2e342f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE