./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/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 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f --- 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 20:33:12,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:33:12,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:33:12,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:33:12,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:33:12,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:33:12,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:33:12,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:33:12,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:33:12,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:33:12,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:33:12,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:33:12,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:33:12,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:33:12,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:33:12,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:33:12,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:33:12,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:33:12,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:33:12,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:33:12,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:33:12,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:33:12,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:33:12,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:33:12,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:33:12,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:33:12,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:33:12,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:33:12,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:33:12,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:33:12,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:33:12,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:33:12,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:33:12,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:33:12,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:33:12,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:33:12,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:33:12,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:33:12,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:33:12,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:33:12,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:33:12,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:33:13,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:33:13,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:33:13,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:33:13,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:33:13,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:33:13,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:33:13,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:33:13,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:33:13,011 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:33:13,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:33:13,012 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:33:13,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:33:13,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:33:13,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:33:13,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:33:13,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:33:13,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:33:13,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:33:13,026 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:33:13,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:33:13,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:33:13,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:33:13,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:33:13,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:33:13,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:33:13,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:33:13,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:33:13,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:33:13,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:33:13,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:33:13,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:33:13,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:33:13,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:33:13,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:33:13,028 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:33:13,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:33:13,028 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:33:13,028 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ef1ebb9985ad6dadbe7cf99c72a7d7cbd507bc2d179a6afec5353fae325d63f [2022-12-13 20:33:13,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:33:13,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:33:13,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:33:13,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:33:13,248 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:33:13,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2022-12-13 20:33:15,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:33:16,116 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:33:16,117 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i [2022-12-13 20:33:16,142 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/data/53a145772/872d9f06e42b4e10b973901b44598512/FLAGf9cd35703 [2022-12-13 20:33:16,152 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/data/53a145772/872d9f06e42b4e10b973901b44598512 [2022-12-13 20:33:16,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:33:16,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:33:16,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:33:16,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:33:16,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:33:16,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3712b786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16, skipping insertion in model container [2022-12-13 20:33:16,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:33:16,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:33:16,675 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2022-12-13 20:33:16,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:33:16,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:33:16,679 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:33:16,680 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:33:16,700 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2022-12-13 20:33:16,703 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2022-12-13 20:33:16,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:33:16,723 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:33:16,754 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2022-12-13 20:33:16,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:33:16,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:33:16,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:33:16,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:33:16,767 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2022-12-13 20:33:16,770 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_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2022-12-13 20:33:16,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:33:16,866 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:33:16,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16 WrapperNode [2022-12-13 20:33:16,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:33:16,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:33:16,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:33:16,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:33:16,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,955 INFO L138 Inliner]: procedures = 489, calls = 127, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1809 [2022-12-13 20:33:16,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:33:16,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:33:16,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:33:16,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:33:16,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:16,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:17,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:17,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:17,034 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:17,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:17,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:33:17,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:33:17,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:33:17,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:33:17,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (1/1) ... [2022-12-13 20:33:17,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:33:17,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:33:17,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:33:17,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:33:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2022-12-13 20:33:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2022-12-13 20:33:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:33:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:33:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 20:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:33:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:33:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:33:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 20:33:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:33:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:33:17,113 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 20:33:17,352 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:33:17,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:33:18,788 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:33:19,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:33:19,086 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 20:33:19,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:33:19 BoogieIcfgContainer [2022-12-13 20:33:19,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:33:19,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:33:19,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:33:19,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:33:19,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:33:16" (1/3) ... [2022-12-13 20:33:19,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4328cdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:33:19, skipping insertion in model container [2022-12-13 20:33:19,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:33:16" (2/3) ... [2022-12-13 20:33:19,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4328cdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:33:19, skipping insertion in model container [2022-12-13 20:33:19,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:33:19" (3/3) ... [2022-12-13 20:33:19,099 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2022-12-13 20:33:19,108 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:33:19,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:33:19,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 90 error locations. [2022-12-13 20:33:19,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:33:19,265 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 20:33:19,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1800 places, 1845 transitions, 3698 flow [2022-12-13 20:33:20,365 INFO L130 PetriNetUnfolder]: 89/3419 cut-off events. [2022-12-13 20:33:20,365 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:33:20,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 3419 events. 89/3419 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 16408 event pairs, 0 based on Foata normal form. 0/3161 useless extension candidates. Maximal degree in co-relation 1743. Up to 6 conditions per place. [2022-12-13 20:33:20,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 1800 places, 1845 transitions, 3698 flow [2022-12-13 20:33:20,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1800 places, 1845 transitions, 3698 flow [2022-12-13 20:33:20,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:33:20,448 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1800 places, 1845 transitions, 3698 flow [2022-12-13 20:33:20,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1800 places, 1845 transitions, 3698 flow [2022-12-13 20:33:20,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1800 places, 1845 transitions, 3698 flow [2022-12-13 20:33:21,196 INFO L130 PetriNetUnfolder]: 89/3419 cut-off events. [2022-12-13 20:33:21,196 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:33:21,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 3419 events. 89/3419 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 16408 event pairs, 0 based on Foata normal form. 0/3161 useless extension candidates. Maximal degree in co-relation 1743. Up to 6 conditions per place. [2022-12-13 20:33:21,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 506880 [2022-12-13 20:34:38,600 WARN L233 SmtUtils]: Spent 11.16s on a formula simplification. DAG size of input: 197 DAG size of output: 194 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:34:48,086 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 197 DAG size of output: 194 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:35:01,147 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 229 DAG size of output: 218 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:35:06,193 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:35:14,766 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 229 DAG size of output: 218 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:35:20,107 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:35:20,117 INFO L134 LiptonReduction]: Checked pairs total: 615198 [2022-12-13 20:35:20,117 INFO L136 LiptonReduction]: Total number of compositions: 1788 [2022-12-13 20:35:20,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:35:20,130 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;@50e7f546, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:35:20,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 97 error locations. [2022-12-13 20:35:20,131 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:35:20,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:35:20,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:20,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:35:20,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2022-12-13 20:35:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash 6808, now seen corresponding path program 1 times [2022-12-13 20:35:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:20,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365872041] [2022-12-13 20:35:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:20,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:20,272 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 20:35:20,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365872041] [2022-12-13 20:35:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365872041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:20,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:20,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:35:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476369991] [2022-12-13 20:35:20,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:35:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:35:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:35:20,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1772 out of 3633 [2022-12-13 20:35:20,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 356 transitions, 720 flow. Second operand has 2 states, 2 states have (on average 1772.5) internal successors, (3545), 2 states have internal predecessors, (3545), 0 states have call successors, (0), 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 20:35:20,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:20,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1772 of 3633 [2022-12-13 20:35:20,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:22,513 INFO L130 PetriNetUnfolder]: 8450/16239 cut-off events. [2022-12-13 20:35:22,513 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:35:22,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32258 conditions, 16239 events. 8450/16239 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 110119 event pairs, 6994 based on Foata normal form. 28/11879 useless extension candidates. Maximal degree in co-relation 31648. Up to 16013 conditions per place. [2022-12-13 20:35:22,564 INFO L137 encePairwiseOnDemand]: 3616/3633 looper letters, 330 selfloop transitions, 0 changer transitions 0/339 dead transitions. [2022-12-13 20:35:22,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 339 transitions, 1346 flow [2022-12-13 20:35:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:35:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:35:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3891 transitions. [2022-12-13 20:35:22,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5355078447563997 [2022-12-13 20:35:22,583 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 3891 transitions. [2022-12-13 20:35:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 3891 transitions. [2022-12-13 20:35:22,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:22,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 3891 transitions. [2022-12-13 20:35:22,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1945.5) internal successors, (3891), 2 states have internal predecessors, (3891), 0 states have call successors, (0), 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 20:35:22,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 3633.0) internal successors, (10899), 3 states have internal predecessors, (10899), 0 states have call successors, (0), 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 20:35:22,617 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 3633.0) internal successors, (10899), 3 states have internal predecessors, (10899), 0 states have call successors, (0), 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 20:35:22,618 INFO L175 Difference]: Start difference. First operand has 330 places, 356 transitions, 720 flow. Second operand 2 states and 3891 transitions. [2022-12-13 20:35:22,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 339 transitions, 1346 flow [2022-12-13 20:35:22,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 339 transitions, 1346 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:35:22,626 INFO L231 Difference]: Finished difference. Result has 315 places, 339 transitions, 686 flow [2022-12-13 20:35:22,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3633, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=686, PETRI_PLACES=315, PETRI_TRANSITIONS=339} [2022-12-13 20:35:22,630 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, -15 predicate places. [2022-12-13 20:35:22,630 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 339 transitions, 686 flow [2022-12-13 20:35:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1772.5) internal successors, (3545), 2 states have internal predecessors, (3545), 0 states have call successors, (0), 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 20:35:22,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:22,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 20:35:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:35:22,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2022-12-13 20:35:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash 217853, now seen corresponding path program 1 times [2022-12-13 20:35:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:22,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418454984] [2022-12-13 20:35:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:22,803 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 20:35:22,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:22,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418454984] [2022-12-13 20:35:22,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418454984] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:22,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:22,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:35:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143203271] [2022-12-13 20:35:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:22,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:22,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:22,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:22,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:22,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1746 out of 3633 [2022-12-13 20:35:22,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 339 transitions, 686 flow. Second operand has 3 states, 3 states have (on average 1746.6666666666667) internal successors, (5240), 3 states have internal predecessors, (5240), 0 states have call successors, (0), 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 20:35:22,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:22,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1746 of 3633 [2022-12-13 20:35:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:27,436 INFO L130 PetriNetUnfolder]: 16306/30789 cut-off events. [2022-12-13 20:35:27,437 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 20:35:27,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61289 conditions, 30789 events. 16306/30789 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 213224 event pairs, 6760 based on Foata normal form. 0/22687 useless extension candidates. Maximal degree in co-relation 61285. Up to 15332 conditions per place. [2022-12-13 20:35:27,533 INFO L137 encePairwiseOnDemand]: 3611/3633 looper letters, 624 selfloop transitions, 12 changer transitions 2/646 dead transitions. [2022-12-13 20:35:27,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 646 transitions, 2576 flow [2022-12-13 20:35:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5891 transitions. [2022-12-13 20:35:27,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5405083035140839 [2022-12-13 20:35:27,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 5891 transitions. [2022-12-13 20:35:27,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 5891 transitions. [2022-12-13 20:35:27,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:27,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 5891 transitions. [2022-12-13 20:35:27,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1963.6666666666667) internal successors, (5891), 3 states have internal predecessors, (5891), 0 states have call successors, (0), 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 20:35:27,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 3633.0) internal successors, (14532), 4 states have internal predecessors, (14532), 0 states have call successors, (0), 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 20:35:27,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 3633.0) internal successors, (14532), 4 states have internal predecessors, (14532), 0 states have call successors, (0), 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 20:35:27,580 INFO L175 Difference]: Start difference. First operand has 315 places, 339 transitions, 686 flow. Second operand 3 states and 5891 transitions. [2022-12-13 20:35:27,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 646 transitions, 2576 flow [2022-12-13 20:35:27,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 646 transitions, 2576 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:35:27,593 INFO L231 Difference]: Finished difference. Result has 314 places, 338 transitions, 738 flow [2022-12-13 20:35:27,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3633, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=738, PETRI_PLACES=314, PETRI_TRANSITIONS=338} [2022-12-13 20:35:27,594 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, -16 predicate places. [2022-12-13 20:35:27,594 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 338 transitions, 738 flow [2022-12-13 20:35:27,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1746.6666666666667) internal successors, (5240), 3 states have internal predecessors, (5240), 0 states have call successors, (0), 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 20:35:27,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:27,597 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 20:35:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:35:27,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2022-12-13 20:35:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 6761085, now seen corresponding path program 1 times [2022-12-13 20:35:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:27,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462693668] [2022-12-13 20:35:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:27,698 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 20:35:27,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:27,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462693668] [2022-12-13 20:35:27,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462693668] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:35:27,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:35:27,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:35:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771739297] [2022-12-13 20:35:27,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:35:27,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:35:27,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:35:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:35:27,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1746 out of 3633 [2022-12-13 20:35:27,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 338 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 1747.0) internal successors, (5241), 3 states have internal predecessors, (5241), 0 states have call successors, (0), 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 20:35:27,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:27,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1746 of 3633 [2022-12-13 20:35:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:31,684 INFO L130 PetriNetUnfolder]: 16277/30733 cut-off events. [2022-12-13 20:35:31,684 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-12-13 20:35:31,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61540 conditions, 30733 events. 16277/30733 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 213302 event pairs, 13572 based on Foata normal form. 0/22913 useless extension candidates. Maximal degree in co-relation 61534. Up to 30407 conditions per place. [2022-12-13 20:35:31,760 INFO L137 encePairwiseOnDemand]: 3630/3633 looper letters, 321 selfloop transitions, 1 changer transitions 5/336 dead transitions. [2022-12-13 20:35:31,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 336 transitions, 1384 flow [2022-12-13 20:35:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:35:31,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:35:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5563 transitions. [2022-12-13 20:35:31,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5104137994311405 [2022-12-13 20:35:31,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 5563 transitions. [2022-12-13 20:35:31,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 5563 transitions. [2022-12-13 20:35:31,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:31,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 5563 transitions. [2022-12-13 20:35:31,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1854.3333333333333) internal successors, (5563), 3 states have internal predecessors, (5563), 0 states have call successors, (0), 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 20:35:31,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 3633.0) internal successors, (14532), 4 states have internal predecessors, (14532), 0 states have call successors, (0), 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 20:35:31,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 3633.0) internal successors, (14532), 4 states have internal predecessors, (14532), 0 states have call successors, (0), 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 20:35:31,787 INFO L175 Difference]: Start difference. First operand has 314 places, 338 transitions, 738 flow. Second operand 3 states and 5563 transitions. [2022-12-13 20:35:31,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 336 transitions, 1384 flow [2022-12-13 20:35:31,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 336 transitions, 1372 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:35:31,792 INFO L231 Difference]: Finished difference. Result has 312 places, 331 transitions, 699 flow [2022-12-13 20:35:31,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3633, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=699, PETRI_PLACES=312, PETRI_TRANSITIONS=331} [2022-12-13 20:35:31,793 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, -18 predicate places. [2022-12-13 20:35:31,793 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 331 transitions, 699 flow [2022-12-13 20:35:31,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1747.0) internal successors, (5241), 3 states have internal predecessors, (5241), 0 states have call successors, (0), 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 20:35:31,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:31,794 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 20:35:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:35:31,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2022-12-13 20:35:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 561806688, now seen corresponding path program 1 times [2022-12-13 20:35:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:31,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898244722] [2022-12-13 20:35:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:35:31,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:35:31,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898244722] [2022-12-13 20:35:31,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898244722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:35:31,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222428164] [2022-12-13 20:35:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:31,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:31,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:35:31,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:35:31,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:35:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:35:32,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:35:32,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:35:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:35:32,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:35:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 20:35:32,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222428164] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:35:32,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:35:32,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 20:35:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344867113] [2022-12-13 20:35:32,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:35:32,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:35:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:35:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:35:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:35:32,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1740 out of 3633 [2022-12-13 20:35:32,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 331 transitions, 699 flow. Second operand has 7 states, 7 states have (on average 1741.5714285714287) internal successors, (12191), 7 states have internal predecessors, (12191), 0 states have call successors, (0), 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 20:35:32,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:35:32,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1740 of 3633 [2022-12-13 20:35:32,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:35:32,338 INFO L130 PetriNetUnfolder]: 62/179 cut-off events. [2022-12-13 20:35:32,339 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 20:35:32,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 179 events. 62/179 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 613 event pairs, 0 based on Foata normal form. 27/184 useless extension candidates. Maximal degree in co-relation 393. Up to 113 conditions per place. [2022-12-13 20:35:32,340 INFO L137 encePairwiseOnDemand]: 3628/3633 looper letters, 62 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2022-12-13 20:35:32,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 305 flow [2022-12-13 20:35:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:35:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:35:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10513 transitions. [2022-12-13 20:35:32,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4822919533902193 [2022-12-13 20:35:32,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 10513 transitions. [2022-12-13 20:35:32,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 10513 transitions. [2022-12-13 20:35:32,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:35:32,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 10513 transitions. [2022-12-13 20:35:32,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 1752.1666666666667) internal successors, (10513), 6 states have internal predecessors, (10513), 0 states have call successors, (0), 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 20:35:32,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 3633.0) internal successors, (25431), 7 states have internal predecessors, (25431), 0 states have call successors, (0), 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 20:35:32,428 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 3633.0) internal successors, (25431), 7 states have internal predecessors, (25431), 0 states have call successors, (0), 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 20:35:32,429 INFO L175 Difference]: Start difference. First operand has 312 places, 331 transitions, 699 flow. Second operand 6 states and 10513 transitions. [2022-12-13 20:35:32,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 305 flow [2022-12-13 20:35:32,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:35:32,431 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 122 flow [2022-12-13 20:35:32,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3633, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2022-12-13 20:35:32,432 INFO L288 CegarLoopForPetriNet]: 330 programPoint places, -284 predicate places. [2022-12-13 20:35:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 122 flow [2022-12-13 20:35:32,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1741.5714285714287) internal successors, (12191), 7 states have internal predecessors, (12191), 0 states have call successors, (0), 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 20:35:32,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:35:32,435 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-12-13 20:35:32,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:35:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:35:32,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 94 more)] === [2022-12-13 20:35:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:35:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -891829024, now seen corresponding path program 2 times [2022-12-13 20:35:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:35:32,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136480367] [2022-12-13 20:35:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:35:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:35:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:35:32,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:35:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:35:32,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:35:32,853 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:35:32,854 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (96 of 97 remaining) [2022-12-13 20:35:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (95 of 97 remaining) [2022-12-13 20:35:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (94 of 97 remaining) [2022-12-13 20:35:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (93 of 97 remaining) [2022-12-13 20:35:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (92 of 97 remaining) [2022-12-13 20:35:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (91 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (90 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (89 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (88 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (87 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (86 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (85 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (84 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (83 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (82 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80ASSERT_VIOLATIONINTEGER_OVERFLOW (81 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONINTEGER_OVERFLOW (80 of 97 remaining) [2022-12-13 20:35:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 97 remaining) [2022-12-13 20:35:32,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 97 remaining) [2022-12-13 20:35:32,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 97 remaining) [2022-12-13 20:35:32,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 97 remaining) [2022-12-13 20:35:32,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 97 remaining) [2022-12-13 20:35:32,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 97 remaining) [2022-12-13 20:35:32,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location StealerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 97 remaining) [2022-12-13 20:35:32,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:35:32,863 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-13 20:35:32,864 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:35:32,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:35:32,933 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 20:35:32,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1959 places, 2007 transitions, 4032 flow [2022-12-13 20:35:34,428 INFO L130 PetriNetUnfolder]: 140/5215 cut-off events. [2022-12-13 20:35:34,429 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:35:34,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 5215 events. 140/5215 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 31081 event pairs, 0 based on Foata normal form. 0/4815 useless extension candidates. Maximal degree in co-relation 3421. Up to 9 conditions per place. [2022-12-13 20:35:34,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 1959 places, 2007 transitions, 4032 flow [2022-12-13 20:35:34,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1959 places, 2007 transitions, 4032 flow [2022-12-13 20:35:34,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:35:34,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1959 places, 2007 transitions, 4032 flow [2022-12-13 20:35:34,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1959 places, 2007 transitions, 4032 flow [2022-12-13 20:35:34,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1959 places, 2007 transitions, 4032 flow [2022-12-13 20:35:36,260 INFO L130 PetriNetUnfolder]: 140/5215 cut-off events. [2022-12-13 20:35:36,260 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:35:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 5215 events. 140/5215 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 31081 event pairs, 0 based on Foata normal form. 0/4815 useless extension candidates. Maximal degree in co-relation 3421. Up to 9 conditions per place. [2022-12-13 20:35:36,734 INFO L119 LiptonReduction]: Number of co-enabled transitions 1071040 [2022-12-13 20:37:16,274 WARN L233 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 239 DAG size of output: 234 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:37:26,359 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 239 DAG size of output: 234 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 20:37:29,414 INFO L134 LiptonReduction]: Checked pairs total: 1390296 [2022-12-13 20:37:29,414 INFO L136 LiptonReduction]: Total number of compositions: 1933 [2022-12-13 20:37:29,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:37:29,416 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;@50e7f546, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:37:29,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 103 error locations. [2022-12-13 20:37:29,417 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 20:37:29,417 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:37:29,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:37:29,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 20:37:29,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2022-12-13 20:37:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:37:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 10910, now seen corresponding path program 1 times [2022-12-13 20:37:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:37:29,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088721690] [2022-12-13 20:37:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:37:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:37:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:37:29,432 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 20:37:29,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:37:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088721690] [2022-12-13 20:37:29,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088721690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:37:29,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:37:29,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 20:37:29,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152740011] [2022-12-13 20:37:29,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:37:29,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:37:29,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:37:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:37:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:37:29,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1927 out of 3940 [2022-12-13 20:37:29,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 393 transitions, 804 flow. Second operand has 2 states, 2 states have (on average 1927.5) internal successors, (3855), 2 states have internal predecessors, (3855), 0 states have call successors, (0), 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 20:37:29,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:37:29,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1927 of 3940 [2022-12-13 20:37:29,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:38:31,223 INFO L130 PetriNetUnfolder]: 466734/686613 cut-off events. [2022-12-13 20:38:31,223 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-12-13 20:38:31,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366272 conditions, 686613 events. 466734/686613 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 4700. Compared 5370403 event pairs, 402915 based on Foata normal form. 1568/510586 useless extension candidates. Maximal degree in co-relation 1139963. Up to 679506 conditions per place. [2022-12-13 20:38:33,486 INFO L137 encePairwiseOnDemand]: 3921/3940 looper letters, 363 selfloop transitions, 0 changer transitions 0/374 dead transitions. [2022-12-13 20:38:33,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 374 transitions, 1492 flow [2022-12-13 20:38:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:38:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 20:38:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4236 transitions. [2022-12-13 20:38:33,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5375634517766498 [2022-12-13 20:38:33,494 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 4236 transitions. [2022-12-13 20:38:33,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 4236 transitions. [2022-12-13 20:38:33,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:38:33,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 4236 transitions. [2022-12-13 20:38:33,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 2118.0) internal successors, (4236), 2 states have internal predecessors, (4236), 0 states have call successors, (0), 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 20:38:33,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 3940.0) internal successors, (11820), 3 states have internal predecessors, (11820), 0 states have call successors, (0), 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 20:38:33,511 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 3940.0) internal successors, (11820), 3 states have internal predecessors, (11820), 0 states have call successors, (0), 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 20:38:33,512 INFO L175 Difference]: Start difference. First operand has 364 places, 393 transitions, 804 flow. Second operand 2 states and 4236 transitions. [2022-12-13 20:38:33,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 374 transitions, 1492 flow [2022-12-13 20:38:33,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 374 transitions, 1492 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:38:33,517 INFO L231 Difference]: Finished difference. Result has 348 places, 374 transitions, 766 flow [2022-12-13 20:38:33,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3940, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=766, PETRI_PLACES=348, PETRI_TRANSITIONS=374} [2022-12-13 20:38:33,518 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, -16 predicate places. [2022-12-13 20:38:33,518 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 374 transitions, 766 flow [2022-12-13 20:38:33,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1927.5) internal successors, (3855), 2 states have internal predecessors, (3855), 0 states have call successors, (0), 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 20:38:33,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:38:33,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 20:38:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:38:33,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2022-12-13 20:38:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:38:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash 349078, now seen corresponding path program 1 times [2022-12-13 20:38:33,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:38:33,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236745408] [2022-12-13 20:38:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:38:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:38:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:38:33,571 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 20:38:33,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:38:33,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236745408] [2022-12-13 20:38:33,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236745408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:38:33,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:38:33,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:38:33,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705687332] [2022-12-13 20:38:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:38:33,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:38:33,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:38:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:38:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:38:33,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1901 out of 3940 [2022-12-13 20:38:33,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 374 transitions, 766 flow. Second operand has 3 states, 3 states have (on average 1901.6666666666667) internal successors, (5705), 3 states have internal predecessors, (5705), 0 states have call successors, (0), 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 20:38:33,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:38:33,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1901 of 3940 [2022-12-13 20:38:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:40:48,871 INFO L130 PetriNetUnfolder]: 912286/1337130 cut-off events. [2022-12-13 20:40:48,871 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-12-13 20:40:50,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664530 conditions, 1337130 events. 912286/1337130 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 6060. Compared 10636644 event pairs, 398386 based on Foata normal form. 0/993827 useless extension candidates. Maximal degree in co-relation 2664525. Up to 672811 conditions per place. [2022-12-13 20:40:54,138 INFO L137 encePairwiseOnDemand]: 3928/3940 looper letters, 695 selfloop transitions, 6 changer transitions 0/711 dead transitions. [2022-12-13 20:40:54,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 711 transitions, 2842 flow [2022-12-13 20:40:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:40:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:40:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6410 transitions. [2022-12-13 20:40:54,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5423011844331641 [2022-12-13 20:40:54,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 6410 transitions. [2022-12-13 20:40:54,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 6410 transitions. [2022-12-13 20:40:54,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:40:54,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 6410 transitions. [2022-12-13 20:40:54,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2136.6666666666665) internal successors, (6410), 3 states have internal predecessors, (6410), 0 states have call successors, (0), 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 20:40:54,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 3940.0) internal successors, (15760), 4 states have internal predecessors, (15760), 0 states have call successors, (0), 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 20:40:54,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 3940.0) internal successors, (15760), 4 states have internal predecessors, (15760), 0 states have call successors, (0), 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 20:40:54,166 INFO L175 Difference]: Start difference. First operand has 348 places, 374 transitions, 766 flow. Second operand 3 states and 6410 transitions. [2022-12-13 20:40:54,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 711 transitions, 2842 flow [2022-12-13 20:40:54,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 711 transitions, 2842 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:40:54,172 INFO L231 Difference]: Finished difference. Result has 348 places, 375 transitions, 806 flow [2022-12-13 20:40:54,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3940, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=806, PETRI_PLACES=348, PETRI_TRANSITIONS=375} [2022-12-13 20:40:54,173 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, -16 predicate places. [2022-12-13 20:40:54,173 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 375 transitions, 806 flow [2022-12-13 20:40:54,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1901.6666666666667) internal successors, (5705), 3 states have internal predecessors, (5705), 0 states have call successors, (0), 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 20:40:54,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:40:54,174 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 20:40:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:40:54,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2022-12-13 20:40:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:40:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash -283951087, now seen corresponding path program 1 times [2022-12-13 20:40:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:40:54,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731650068] [2022-12-13 20:40:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:40:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:40:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:40:54,225 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 20:40:54,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:40:54,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731650068] [2022-12-13 20:40:54,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731650068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:40:54,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:40:54,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:40:54,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821035724] [2022-12-13 20:40:54,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:40:54,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:40:54,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:40:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:40:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:40:54,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1901 out of 3940 [2022-12-13 20:40:54,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 375 transitions, 806 flow. Second operand has 3 states, 3 states have (on average 1902.6666666666667) internal successors, (5708), 3 states have internal predecessors, (5708), 0 states have call successors, (0), 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 20:40:54,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:40:54,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1901 of 3940 [2022-12-13 20:40:54,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:43:21,417 INFO L130 PetriNetUnfolder]: 905894/1326291 cut-off events. [2022-12-13 20:43:21,417 INFO L131 PetriNetUnfolder]: For 6131/6131 co-relation queries the response was YES. [2022-12-13 20:43:22,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656307 conditions, 1326291 events. 905894/1326291 cut-off events. For 6131/6131 co-relation queries the response was YES. Maximal size of possible extension queue 6053. Compared 10605795 event pairs, 391622 based on Foata normal form. 2349/997335 useless extension candidates. Maximal degree in co-relation 2656300. Up to 666003 conditions per place. [2022-12-13 20:43:26,305 INFO L137 encePairwiseOnDemand]: 3924/3940 looper letters, 693 selfloop transitions, 12 changer transitions 1/716 dead transitions. [2022-12-13 20:43:26,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 716 transitions, 2900 flow [2022-12-13 20:43:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:43:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:43:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6418 transitions. [2022-12-13 20:43:26,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5429780033840947 [2022-12-13 20:43:26,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 6418 transitions. [2022-12-13 20:43:26,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 6418 transitions. [2022-12-13 20:43:26,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:43:26,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 6418 transitions. [2022-12-13 20:43:26,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 2139.3333333333335) internal successors, (6418), 3 states have internal predecessors, (6418), 0 states have call successors, (0), 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 20:43:26,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 3940.0) internal successors, (15760), 4 states have internal predecessors, (15760), 0 states have call successors, (0), 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 20:43:26,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 3940.0) internal successors, (15760), 4 states have internal predecessors, (15760), 0 states have call successors, (0), 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 20:43:26,331 INFO L175 Difference]: Start difference. First operand has 348 places, 375 transitions, 806 flow. Second operand 3 states and 6418 transitions. [2022-12-13 20:43:26,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 716 transitions, 2900 flow [2022-12-13 20:43:26,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 716 transitions, 2888 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:43:26,364 INFO L231 Difference]: Finished difference. Result has 349 places, 375 transitions, 836 flow [2022-12-13 20:43:26,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=3940, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=836, PETRI_PLACES=349, PETRI_TRANSITIONS=375} [2022-12-13 20:43:26,365 INFO L288 CegarLoopForPetriNet]: 364 programPoint places, -15 predicate places. [2022-12-13 20:43:26,365 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 375 transitions, 836 flow [2022-12-13 20:43:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1902.6666666666667) internal successors, (5708), 3 states have internal predecessors, (5708), 0 states have call successors, (0), 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 20:43:26,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:43:26,366 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:43:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:43:26,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [StealerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, StealerErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 100 more)] === [2022-12-13 20:43:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:43:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1958663209, now seen corresponding path program 1 times [2022-12-13 20:43:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:43:26,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825615336] [2022-12-13 20:43:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:43:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:43:26,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:43:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825615336] [2022-12-13 20:43:26,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825615336] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:43:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15715381] [2022-12-13 20:43:26,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:43:26,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:43:26,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:43:26,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:43:26,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfeeaeec-2d3b-4f3c-b4be-63f59a9ced2c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:43:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:43:26,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:43:26,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:43:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:43:26,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:43:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 20:43:26,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15715381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:43:26,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:43:26,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 20:43:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025251176] [2022-12-13 20:43:26,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:43:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:43:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:43:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:43:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:43:26,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1895 out of 3940 [2022-12-13 20:43:26,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 375 transitions, 836 flow. Second operand has 6 states, 6 states have (on average 1896.8333333333333) internal successors, (11381), 6 states have internal predecessors, (11381), 0 states have call successors, (0), 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 20:43:26,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:43:26,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1895 of 3940 [2022-12-13 20:43:26,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand