./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --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_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/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_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/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_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:42:42,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:42:42,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:42:42,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:42:42,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:42:42,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:42:42,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:42:42,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:42:42,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:42:42,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:42:42,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:42:42,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:42:42,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:42:42,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:42:42,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:42:42,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:42:42,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:42:42,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:42:42,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:42:42,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:42:42,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:42:42,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:42:42,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:42:42,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:42:42,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:42:42,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:42:42,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:42:42,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:42:42,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:42:42,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:42:42,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:42:42,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:42:42,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:42:42,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:42:42,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:42:42,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:42:42,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:42:42,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:42:42,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:42:42,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:42:42,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:42:42,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:42:43,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:42:43,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:42:43,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:42:43,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:42:43,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:42:43,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:42:43,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:42:43,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:42:43,006 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:42:43,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:42:43,007 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:42:43,007 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:42:43,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:42:43,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:42:43,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:42:43,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:42:43,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:42:43,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:42:43,008 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:42:43,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:42:43,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:42:43,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:42:43,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:42:43,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:42:43,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:42:43,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:42:43,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:42:43,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:42:43,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:42:43,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:42:43,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:42:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:42:43,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:42:43,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:42:43,012 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:42:43,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:42:43,012 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:42:43,012 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_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 [2022-12-13 16:42:43,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:42:43,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:42:43,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:42:43,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:42:43,200 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:42:43,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-12-13 16:42:45,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:42:45,891 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:42:45,892 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-12-13 16:42:45,897 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/data/f75cb9114/6660298532f74486bc694488869a6f5e/FLAG0bd96fbb3 [2022-12-13 16:42:46,314 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/data/f75cb9114/6660298532f74486bc694488869a6f5e [2022-12-13 16:42:46,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:42:46,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:42:46,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:42:46,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:42:46,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:42:46,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc1028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46, skipping insertion in model container [2022-12-13 16:42:46,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:42:46,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:42:46,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:42:46,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:42:46,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:42:46,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:42:46,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:42:46,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:42:46,482 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_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-12-13 16:42:46,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:42:46,497 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:42:46,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:42:46,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:42:46,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:42:46,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:42:46,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:42:46,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:42:46,516 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_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-12-13 16:42:46,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:42:46,528 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:42:46,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46 WrapperNode [2022-12-13 16:42:46,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:42:46,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:42:46,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:42:46,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:42:46,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,558 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-12-13 16:42:46,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:42:46,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:42:46,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:42:46,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:42:46,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,583 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:42:46,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:42:46,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:42:46,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:42:46,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (1/1) ... [2022-12-13 16:42:46,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:42:46,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:46,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:42:46,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:42:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:42:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:42:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:42:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:42:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:42:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:42:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:42:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:42:46,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:42:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:42:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:42:46,644 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:42:46,719 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:42:46,721 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:42:46,944 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:42:46,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:42:46,992 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 16:42:46,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:42:46 BoogieIcfgContainer [2022-12-13 16:42:46,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:42:47,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:42:47,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:42:47,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:42:47,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:42:46" (1/3) ... [2022-12-13 16:42:47,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d090dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:42:47, skipping insertion in model container [2022-12-13 16:42:47,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:42:46" (2/3) ... [2022-12-13 16:42:47,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d090dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:42:47, skipping insertion in model container [2022-12-13 16:42:47,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:42:46" (3/3) ... [2022-12-13 16:42:47,005 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-12-13 16:42:47,011 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:42:47,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:42:47,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 16:42:47,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:42:47,084 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:42:47,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2022-12-13 16:42:47,163 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2022-12-13 16:42:47,164 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:42:47,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 139 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-12-13 16:42:47,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2022-12-13 16:42:47,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 145 transitions, 305 flow [2022-12-13 16:42:47,175 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:42:47,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 145 transitions, 305 flow [2022-12-13 16:42:47,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 145 transitions, 305 flow [2022-12-13 16:42:47,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 145 transitions, 305 flow [2022-12-13 16:42:47,210 INFO L130 PetriNetUnfolder]: 11/145 cut-off events. [2022-12-13 16:42:47,210 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:42:47,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 145 events. 11/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 135 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2022-12-13 16:42:47,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-12-13 16:42:52,061 INFO L134 LiptonReduction]: Checked pairs total: 2491 [2022-12-13 16:42:52,062 INFO L136 LiptonReduction]: Total number of compositions: 153 [2022-12-13 16:42:52,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:42:52,077 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;@11ad3311, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:42:52,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 16:42:52,079 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 16:42:52,079 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:42:52,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:52,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:42:52,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 21538, now seen corresponding path program 1 times [2022-12-13 16:42:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:52,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905603133] [2022-12-13 16:42:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:52,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:52,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905603133] [2022-12-13 16:42:52,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905603133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:52,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:42:52,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:42:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176617333] [2022-12-13 16:42:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:52,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:42:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:42:52,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:42:52,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 16:42:52,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:52,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:52,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 16:42:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:52,741 INFO L130 PetriNetUnfolder]: 2481/3227 cut-off events. [2022-12-13 16:42:52,741 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-12-13 16:42:52,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 3227 events. 2481/3227 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13697 event pairs, 1163 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 2828. Up to 1610 conditions per place. [2022-12-13 16:42:52,765 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 16:42:52,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2022-12-13 16:42:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:42:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:42:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-12-13 16:42:52,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2022-12-13 16:42:52,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-12-13 16:42:52,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-12-13 16:42:52,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:52,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-12-13 16:42:52,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:52,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:52,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:52,798 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 497 transitions. [2022-12-13 16:42:52,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2022-12-13 16:42:52,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 16:42:52,808 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2022-12-13 16:42:52,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-12-13 16:42:52,813 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-12-13 16:42:52,814 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2022-12-13 16:42:52,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:52,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:52,815 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:42:52,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:42:52,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:52,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash 669190, now seen corresponding path program 1 times [2022-12-13 16:42:52,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:52,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993147780] [2022-12-13 16:42:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:52,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:52,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993147780] [2022-12-13 16:42:52,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993147780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353879779] [2022-12-13 16:42:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:52,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:52,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:52,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:42:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:52,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:42:52,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:53,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:42:53,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353879779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:53,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:42:53,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 16:42:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465772228] [2022-12-13 16:42:53,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:53,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:42:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:53,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:42:53,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:42:53,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 16:42:53,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:53,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:53,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 16:42:53,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:53,369 INFO L130 PetriNetUnfolder]: 2481/3226 cut-off events. [2022-12-13 16:42:53,369 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 16:42:53,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 3226 events. 2481/3226 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 13678 event pairs, 1163 based on Foata normal form. 0/1174 useless extension candidates. Maximal degree in co-relation 3300. Up to 1610 conditions per place. [2022-12-13 16:42:53,382 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-12-13 16:42:53,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 228 flow [2022-12-13 16:42:53,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:42:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:42:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-12-13 16:42:53,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49922360248447206 [2022-12-13 16:42:53,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-12-13 16:42:53,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-12-13 16:42:53,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:53,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-12-13 16:42:53,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:53,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:53,397 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:53,397 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 4 states and 643 transitions. [2022-12-13 16:42:53,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 228 flow [2022-12-13 16:42:53,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:42:53,398 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2022-12-13 16:42:53,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 16:42:53,399 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-12-13 16:42:53,399 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2022-12-13 16:42:53,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:53,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:53,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:42:53,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:42:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:53,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 669202, now seen corresponding path program 1 times [2022-12-13 16:42:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:53,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030686277] [2022-12-13 16:42:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:53,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:53,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030686277] [2022-12-13 16:42:53,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030686277] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:53,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432516106] [2022-12-13 16:42:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:53,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:53,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:53,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:42:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:53,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:42:53,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:53,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:42:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:53,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432516106] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:42:53,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:42:53,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 16:42:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275202695] [2022-12-13 16:42:53,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:42:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:42:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:42:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:42:53,886 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 322 [2022-12-13 16:42:53,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:53,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:53,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 322 [2022-12-13 16:42:53,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:54,628 INFO L130 PetriNetUnfolder]: 6129/7990 cut-off events. [2022-12-13 16:42:54,628 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 16:42:54,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16123 conditions, 7990 events. 6129/7990 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 38195 event pairs, 2894 based on Foata normal form. 0/2923 useless extension candidates. Maximal degree in co-relation 12811. Up to 1610 conditions per place. [2022-12-13 16:42:54,688 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2022-12-13 16:42:54,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 125 transitions, 542 flow [2022-12-13 16:42:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:42:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:42:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1013 transitions. [2022-12-13 16:42:54,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5243271221532091 [2022-12-13 16:42:54,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1013 transitions. [2022-12-13 16:42:54,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1013 transitions. [2022-12-13 16:42:54,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:54,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1013 transitions. [2022-12-13 16:42:54,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:54,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:54,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:54,706 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 78 flow. Second operand 6 states and 1013 transitions. [2022-12-13 16:42:54,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 125 transitions, 542 flow [2022-12-13 16:42:54,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:42:54,710 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2022-12-13 16:42:54,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-12-13 16:42:54,711 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-13 16:42:54,711 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2022-12-13 16:42:54,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 149.14285714285714) internal successors, (1044), 7 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:54,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:54,713 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:42:54,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:42:54,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:54,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:54,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:54,914 INFO L85 PathProgramCache]: Analyzing trace with hash 642955955, now seen corresponding path program 1 times [2022-12-13 16:42:54,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:54,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654778764] [2022-12-13 16:42:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:54,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:54,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654778764] [2022-12-13 16:42:54,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654778764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:54,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:42:54,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:42:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467065886] [2022-12-13 16:42:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:42:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:42:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:42:54,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:42:54,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:54,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:54,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:42:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:55,985 INFO L130 PetriNetUnfolder]: 8556/11337 cut-off events. [2022-12-13 16:42:55,985 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 16:42:55,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22981 conditions, 11337 events. 8556/11337 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 60847 event pairs, 2975 based on Foata normal form. 0/4612 useless extension candidates. Maximal degree in co-relation 18377. Up to 7323 conditions per place. [2022-12-13 16:42:56,016 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 16:42:56,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2022-12-13 16:42:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:42:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:42:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 16:42:56,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2022-12-13 16:42:56,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 16:42:56,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 16:42:56,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:56,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 16:42:56,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,020 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 495 transitions. [2022-12-13 16:42:56,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2022-12-13 16:42:56,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 16:42:56,021 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2022-12-13 16:42:56,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-12-13 16:42:56,022 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-13 16:42:56,022 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2022-12-13 16:42:56,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:56,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:42:56,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:42:56,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1543200831, now seen corresponding path program 1 times [2022-12-13 16:42:56,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:56,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154427811] [2022-12-13 16:42:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:56,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:56,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154427811] [2022-12-13 16:42:56,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154427811] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:56,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700903624] [2022-12-13 16:42:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:56,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:56,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:56,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:42:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:56,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:42:56,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:56,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:42:56,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700903624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:56,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:42:56,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-12-13 16:42:56,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505582747] [2022-12-13 16:42:56,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:56,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:42:56,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:56,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:42:56,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:42:56,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 322 [2022-12-13 16:42:56,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:56,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 322 [2022-12-13 16:42:56,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:56,778 INFO L130 PetriNetUnfolder]: 6597/8823 cut-off events. [2022-12-13 16:42:56,778 INFO L131 PetriNetUnfolder]: For 1163/1163 co-relation queries the response was YES. [2022-12-13 16:42:56,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19219 conditions, 8823 events. 6597/8823 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 46020 event pairs, 3596 based on Foata normal form. 1/4068 useless extension candidates. Maximal degree in co-relation 19202. Up to 8691 conditions per place. [2022-12-13 16:42:56,803 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2022-12-13 16:42:56,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 181 flow [2022-12-13 16:42:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:42:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:42:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2022-12-13 16:42:56,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2022-12-13 16:42:56,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2022-12-13 16:42:56,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2022-12-13 16:42:56,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:56,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2022-12-13 16:42:56,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,807 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 455 transitions. [2022-12-13 16:42:56,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 181 flow [2022-12-13 16:42:56,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 177 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 16:42:56,808 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2022-12-13 16:42:56,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-12-13 16:42:56,809 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-12-13 16:42:56,809 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2022-12-13 16:42:56,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:56,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:56,809 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 16:42:56,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:42:57,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:57,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1537495762, now seen corresponding path program 2 times [2022-12-13 16:42:57,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:57,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499632725] [2022-12-13 16:42:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:57,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:57,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:57,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499632725] [2022-12-13 16:42:57,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499632725] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:57,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676869093] [2022-12-13 16:42:57,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:42:57,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:57,077 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:57,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:42:57,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:42:57,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:42:57,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:42:57,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:42:57,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:42:57,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676869093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:57,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:42:57,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 16:42:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139748858] [2022-12-13 16:42:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:57,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:42:57,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:42:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:42:57,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:42:57,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:57,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:57,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:42:57,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:57,924 INFO L130 PetriNetUnfolder]: 5861/7842 cut-off events. [2022-12-13 16:42:57,924 INFO L131 PetriNetUnfolder]: For 492/716 co-relation queries the response was YES. [2022-12-13 16:42:57,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16780 conditions, 7842 events. 5861/7842 cut-off events. For 492/716 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 40820 event pairs, 3152 based on Foata normal form. 225/3771 useless extension candidates. Maximal degree in co-relation 16760. Up to 7726 conditions per place. [2022-12-13 16:42:57,960 INFO L137 encePairwiseOnDemand]: 320/322 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 16:42:57,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 171 flow [2022-12-13 16:42:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:42:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:42:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2022-12-13 16:42:57,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.489648033126294 [2022-12-13 16:42:57,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2022-12-13 16:42:57,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2022-12-13 16:42:57,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:57,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2022-12-13 16:42:57,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:57,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:57,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:57,969 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 121 flow. Second operand 3 states and 473 transitions. [2022-12-13 16:42:57,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 171 flow [2022-12-13 16:42:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 157 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-12-13 16:42:57,970 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 99 flow [2022-12-13 16:42:57,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2022-12-13 16:42:57,971 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-12-13 16:42:57,971 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 99 flow [2022-12-13 16:42:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:57,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:57,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:42:57,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:42:58,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 16:42:58,174 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:58,175 INFO L85 PathProgramCache]: Analyzing trace with hash -423432301, now seen corresponding path program 1 times [2022-12-13 16:42:58,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:58,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295191866] [2022-12-13 16:42:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:42:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:58,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295191866] [2022-12-13 16:42:58,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295191866] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:58,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919000817] [2022-12-13 16:42:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:58,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:58,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:58,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:58,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:42:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:58,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:42:58,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:58,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:42:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:42:58,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919000817] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:42:58,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:42:58,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-12-13 16:42:58,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874782215] [2022-12-13 16:42:58,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:42:58,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 16:42:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 16:42:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:42:58,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 322 [2022-12-13 16:42:58,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 99 flow. Second operand has 13 states, 13 states have (on average 140.53846153846155) internal successors, (1827), 13 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:58,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:58,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 322 [2022-12-13 16:42:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:42:59,242 INFO L130 PetriNetUnfolder]: 5704/7545 cut-off events. [2022-12-13 16:42:59,243 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-12-13 16:42:59,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16167 conditions, 7545 events. 5704/7545 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 38325 event pairs, 324 based on Foata normal form. 52/3768 useless extension candidates. Maximal degree in co-relation 16157. Up to 1836 conditions per place. [2022-12-13 16:42:59,260 INFO L137 encePairwiseOnDemand]: 313/322 looper letters, 137 selfloop transitions, 11 changer transitions 0/150 dead transitions. [2022-12-13 16:42:59,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 150 transitions, 664 flow [2022-12-13 16:42:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 16:42:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 16:42:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1823 transitions. [2022-12-13 16:42:59,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47179089026915116 [2022-12-13 16:42:59,263 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1823 transitions. [2022-12-13 16:42:59,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1823 transitions. [2022-12-13 16:42:59,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:42:59,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1823 transitions. [2022-12-13 16:42:59,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.91666666666666) internal successors, (1823), 12 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:59,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 322.0) internal successors, (4186), 13 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:59,270 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 322.0) internal successors, (4186), 13 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:59,270 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 99 flow. Second operand 12 states and 1823 transitions. [2022-12-13 16:42:59,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 150 transitions, 664 flow [2022-12-13 16:42:59,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 150 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:42:59,272 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 163 flow [2022-12-13 16:42:59,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2022-12-13 16:42:59,272 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-13 16:42:59,272 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 163 flow [2022-12-13 16:42:59,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 140.53846153846155) internal successors, (1827), 13 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:59,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:42:59,273 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 16:42:59,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:42:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:59,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:42:59,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:59,475 INFO L85 PathProgramCache]: Analyzing trace with hash -70345663, now seen corresponding path program 1 times [2022-12-13 16:42:59,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:59,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850805054] [2022-12-13 16:42:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:59,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:42:59,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:59,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850805054] [2022-12-13 16:42:59,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850805054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:42:59,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114628328] [2022-12-13 16:42:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:59,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:42:59,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:42:59,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:42:59,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:42:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:59,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:42:59,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:42:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:42:59,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:42:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:42:59,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114628328] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:42:59,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:42:59,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:42:59,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514606123] [2022-12-13 16:42:59,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:42:59,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:42:59,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:42:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:42:59,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:42:59,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 150.71428571428572) internal successors, (1055), 7 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:42:59,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:42:59,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:42:59,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:00,734 INFO L130 PetriNetUnfolder]: 11020/14517 cut-off events. [2022-12-13 16:43:00,734 INFO L131 PetriNetUnfolder]: For 15118/15120 co-relation queries the response was YES. [2022-12-13 16:43:00,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37974 conditions, 14517 events. 11020/14517 cut-off events. For 15118/15120 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 77571 event pairs, 1215 based on Foata normal form. 2/8104 useless extension candidates. Maximal degree in co-relation 37957. Up to 3939 conditions per place. [2022-12-13 16:43:00,792 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 103 selfloop transitions, 7 changer transitions 0/112 dead transitions. [2022-12-13 16:43:00,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 112 transitions, 609 flow [2022-12-13 16:43:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:43:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:43:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 998 transitions. [2022-12-13 16:43:00,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165631469979296 [2022-12-13 16:43:00,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 998 transitions. [2022-12-13 16:43:00,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 998 transitions. [2022-12-13 16:43:00,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:00,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 998 transitions. [2022-12-13 16:43:00,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:00,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:00,799 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:00,799 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 163 flow. Second operand 6 states and 998 transitions. [2022-12-13 16:43:00,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 112 transitions, 609 flow [2022-12-13 16:43:00,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 112 transitions, 593 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 16:43:00,817 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 194 flow [2022-12-13 16:43:00,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2022-12-13 16:43:00,817 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-12-13 16:43:00,817 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 194 flow [2022-12-13 16:43:00,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.71428571428572) internal successors, (1055), 7 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:00,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:00,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:00,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:43:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 16:43:01,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:43:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash -236394405, now seen corresponding path program 1 times [2022-12-13 16:43:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:01,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677551979] [2022-12-13 16:43:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:01,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677551979] [2022-12-13 16:43:01,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677551979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:01,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:01,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:43:01,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230523213] [2022-12-13 16:43:01,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:01,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:01,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:01,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:01,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:43:01,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:43:01,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:01,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:01,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:43:01,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:02,287 INFO L130 PetriNetUnfolder]: 11908/16541 cut-off events. [2022-12-13 16:43:02,287 INFO L131 PetriNetUnfolder]: For 32176/32847 co-relation queries the response was YES. [2022-12-13 16:43:02,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47153 conditions, 16541 events. 11908/16541 cut-off events. For 32176/32847 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 102500 event pairs, 5537 based on Foata normal form. 656/11629 useless extension candidates. Maximal degree in co-relation 47133. Up to 11568 conditions per place. [2022-12-13 16:43:02,353 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 60 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-12-13 16:43:02,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 440 flow [2022-12-13 16:43:02,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2022-12-13 16:43:02,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2022-12-13 16:43:02,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2022-12-13 16:43:02,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2022-12-13 16:43:02,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:02,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2022-12-13 16:43:02,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:02,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:02,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:02,357 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 194 flow. Second operand 3 states and 490 transitions. [2022-12-13 16:43:02,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 440 flow [2022-12-13 16:43:02,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 422 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:02,398 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 198 flow [2022-12-13 16:43:02,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2022-12-13 16:43:02,398 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-13 16:43:02,398 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 198 flow [2022-12-13 16:43:02,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:02,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:02,399 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:02,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:43:02,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:43:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1261709080, now seen corresponding path program 1 times [2022-12-13 16:43:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:02,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713613586] [2022-12-13 16:43:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:02,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:02,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713613586] [2022-12-13 16:43:02,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713613586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:02,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210318721] [2022-12-13 16:43:02,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:02,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:02,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:02,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:02,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:43:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:02,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:43:02,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:02,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:43:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:02,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210318721] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:43:02,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:43:02,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:43:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667190832] [2022-12-13 16:43:02,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:43:02,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:43:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:43:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:43:02,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:43:02,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:02,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:02,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:43:02,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:05,270 INFO L130 PetriNetUnfolder]: 24448/33191 cut-off events. [2022-12-13 16:43:05,270 INFO L131 PetriNetUnfolder]: For 65083/66330 co-relation queries the response was YES. [2022-12-13 16:43:05,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98573 conditions, 33191 events. 24448/33191 cut-off events. For 65083/66330 co-relation queries the response was YES. Maximal size of possible extension queue 1753. Compared 213107 event pairs, 4340 based on Foata normal form. 1232/25231 useless extension candidates. Maximal degree in co-relation 98551. Up to 9325 conditions per place. [2022-12-13 16:43:05,409 INFO L137 encePairwiseOnDemand]: 318/322 looper letters, 148 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2022-12-13 16:43:05,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 160 transitions, 1089 flow [2022-12-13 16:43:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:43:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:43:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1150 transitions. [2022-12-13 16:43:05,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2022-12-13 16:43:05,412 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1150 transitions. [2022-12-13 16:43:05,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1150 transitions. [2022-12-13 16:43:05,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:05,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1150 transitions. [2022-12-13 16:43:05,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:05,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 322.0) internal successors, (2576), 8 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:05,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 322.0) internal successors, (2576), 8 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:05,416 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 198 flow. Second operand 7 states and 1150 transitions. [2022-12-13 16:43:05,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 160 transitions, 1089 flow [2022-12-13 16:43:05,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:05,442 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 255 flow [2022-12-13 16:43:05,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2022-12-13 16:43:05,442 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-12-13 16:43:05,443 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 255 flow [2022-12-13 16:43:05,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 151.0) internal successors, (1057), 7 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:05,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:05,443 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:05,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:43:05,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 16:43:05,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:43:05,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:05,646 INFO L85 PathProgramCache]: Analyzing trace with hash 458276841, now seen corresponding path program 1 times [2022-12-13 16:43:05,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:05,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101984485] [2022-12-13 16:43:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:05,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:05,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101984485] [2022-12-13 16:43:05,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101984485] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:05,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395614854] [2022-12-13 16:43:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:05,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:05,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:05,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:05,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:43:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:05,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:43:05,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:05,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395614854] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:05,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:05,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-13 16:43:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968565151] [2022-12-13 16:43:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:05,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:43:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:43:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:43:05,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:43:05,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:05,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:05,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:43:05,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:08,079 INFO L130 PetriNetUnfolder]: 21169/29310 cut-off events. [2022-12-13 16:43:08,079 INFO L131 PetriNetUnfolder]: For 63420/64574 co-relation queries the response was YES. [2022-12-13 16:43:08,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93370 conditions, 29310 events. 21169/29310 cut-off events. For 63420/64574 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 193053 event pairs, 1178 based on Foata normal form. 2349/25827 useless extension candidates. Maximal degree in co-relation 93345. Up to 17711 conditions per place. [2022-12-13 16:43:08,215 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 104 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2022-12-13 16:43:08,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 771 flow [2022-12-13 16:43:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:43:08,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:43:08,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2022-12-13 16:43:08,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2022-12-13 16:43:08,217 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2022-12-13 16:43:08,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2022-12-13 16:43:08,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:08,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2022-12-13 16:43:08,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:08,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:08,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:08,221 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 255 flow. Second operand 5 states and 815 transitions. [2022-12-13 16:43:08,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 771 flow [2022-12-13 16:43:08,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 763 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 16:43:08,426 INFO L231 Difference]: Finished difference. Result has 71 places, 44 transitions, 226 flow [2022-12-13 16:43:08,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=71, PETRI_TRANSITIONS=44} [2022-12-13 16:43:08,427 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2022-12-13 16:43:08,427 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 44 transitions, 226 flow [2022-12-13 16:43:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:08,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:08,427 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:08,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:43:08,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:08,629 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:43:08,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:08,630 INFO L85 PathProgramCache]: Analyzing trace with hash 463026124, now seen corresponding path program 1 times [2022-12-13 16:43:08,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:08,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184616705] [2022-12-13 16:43:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:08,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:08,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:08,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184616705] [2022-12-13 16:43:08,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184616705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:08,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:43:08,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:43:08,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211234765] [2022-12-13 16:43:08,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:08,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:43:08,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:08,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:43:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:43:08,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 322 [2022-12-13 16:43:08,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 44 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:08,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:08,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 322 [2022-12-13 16:43:08,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:10,519 INFO L130 PetriNetUnfolder]: 12939/19132 cut-off events. [2022-12-13 16:43:10,519 INFO L131 PetriNetUnfolder]: For 42526/44324 co-relation queries the response was YES. [2022-12-13 16:43:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60899 conditions, 19132 events. 12939/19132 cut-off events. For 42526/44324 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 127735 event pairs, 2935 based on Foata normal form. 1798/19540 useless extension candidates. Maximal degree in co-relation 60873. Up to 13605 conditions per place. [2022-12-13 16:43:10,618 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 61 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 16:43:10,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 481 flow [2022-12-13 16:43:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:43:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:43:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2022-12-13 16:43:10,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2022-12-13 16:43:10,620 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2022-12-13 16:43:10,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2022-12-13 16:43:10,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:10,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2022-12-13 16:43:10,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:10,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:10,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 322.0) internal successors, (1610), 5 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:10,623 INFO L175 Difference]: Start difference. First operand has 71 places, 44 transitions, 226 flow. Second operand 4 states and 623 transitions. [2022-12-13 16:43:10,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 481 flow [2022-12-13 16:43:10,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 473 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 16:43:10,668 INFO L231 Difference]: Finished difference. Result has 70 places, 43 transitions, 223 flow [2022-12-13 16:43:10,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=70, PETRI_TRANSITIONS=43} [2022-12-13 16:43:10,668 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2022-12-13 16:43:10,668 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 43 transitions, 223 flow [2022-12-13 16:43:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:10,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:10,669 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:10,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:43:10,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:43:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 891614659, now seen corresponding path program 1 times [2022-12-13 16:43:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:10,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440379416] [2022-12-13 16:43:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:43:10,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440379416] [2022-12-13 16:43:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440379416] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:10,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701996646] [2022-12-13 16:43:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:10,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:10,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:10,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:43:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:10,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:43:10,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:43:10,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:10,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701996646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:10,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:10,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-13 16:43:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409674960] [2022-12-13 16:43:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:10,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:43:10,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:43:10,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 43 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:10,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:10,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:43:10,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:12,005 INFO L130 PetriNetUnfolder]: 10852/15569 cut-off events. [2022-12-13 16:43:12,005 INFO L131 PetriNetUnfolder]: For 47766/49164 co-relation queries the response was YES. [2022-12-13 16:43:12,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43018 conditions, 15569 events. 10852/15569 cut-off events. For 47766/49164 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 99278 event pairs, 7689 based on Foata normal form. 3533/16521 useless extension candidates. Maximal degree in co-relation 42991. Up to 15487 conditions per place. [2022-12-13 16:43:12,070 INFO L137 encePairwiseOnDemand]: 319/322 looper letters, 33 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2022-12-13 16:43:12,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 41 transitions, 273 flow [2022-12-13 16:43:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2022-12-13 16:43:12,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2022-12-13 16:43:12,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2022-12-13 16:43:12,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2022-12-13 16:43:12,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:12,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2022-12-13 16:43:12,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,075 INFO L175 Difference]: Start difference. First operand has 70 places, 43 transitions, 223 flow. Second operand 3 states and 469 transitions. [2022-12-13 16:43:12,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 41 transitions, 273 flow [2022-12-13 16:43:12,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 244 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-12-13 16:43:12,107 INFO L231 Difference]: Finished difference. Result has 60 places, 38 transitions, 165 flow [2022-12-13 16:43:12,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=60, PETRI_TRANSITIONS=38} [2022-12-13 16:43:12,108 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-12-13 16:43:12,108 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 38 transitions, 165 flow [2022-12-13 16:43:12,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:43:12,108 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:12,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:43:12,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:43:12,309 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-12-13 16:43:12,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1977536613, now seen corresponding path program 2 times [2022-12-13 16:43:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:12,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007928039] [2022-12-13 16:43:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:43:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:12,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007928039] [2022-12-13 16:43:12,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007928039] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:12,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555620862] [2022-12-13 16:43:12,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:43:12,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:12,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:12,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:12,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:43:12,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:43:12,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:43:12,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:43:12,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 16:43:12,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:12,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555620862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:12,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:12,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 16:43:12,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217623581] [2022-12-13 16:43:12,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:12,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:12,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:12,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:12,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:43:12,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 322 [2022-12-13 16:43:12,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 38 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:43:12,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 322 [2022-12-13 16:43:12,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:43:12,940 INFO L130 PetriNetUnfolder]: 4617/6580 cut-off events. [2022-12-13 16:43:12,940 INFO L131 PetriNetUnfolder]: For 7954/8761 co-relation queries the response was YES. [2022-12-13 16:43:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19038 conditions, 6580 events. 4617/6580 cut-off events. For 7954/8761 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36039 event pairs, 3140 based on Foata normal form. 1181/6760 useless extension candidates. Maximal degree in co-relation 19019. Up to 6520 conditions per place. [2022-12-13 16:43:12,949 INFO L137 encePairwiseOnDemand]: 320/322 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2022-12-13 16:43:12,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 37 transitions, 221 flow [2022-12-13 16:43:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:43:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2022-12-13 16:43:12,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4803312629399586 [2022-12-13 16:43:12,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2022-12-13 16:43:12,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2022-12-13 16:43:12,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:43:12,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2022-12-13 16:43:12,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 322.0) internal successors, (1288), 4 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,953 INFO L175 Difference]: Start difference. First operand has 60 places, 38 transitions, 165 flow. Second operand 3 states and 464 transitions. [2022-12-13 16:43:12,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 37 transitions, 221 flow [2022-12-13 16:43:12,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 37 transitions, 202 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 16:43:12,968 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2022-12-13 16:43:12,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2022-12-13 16:43:12,968 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-12-13 16:43:12,968 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2022-12-13 16:43:12,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:43:12,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-12-13 16:43:12,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-12-13 16:43:12,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-12-13 16:43:12,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-12-13 16:43:12,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-12-13 16:43:12,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-12-13 16:43:12,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-12-13 16:43:12,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-12-13 16:43:12,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:43:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:13,174 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:43:13,188 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:43:13,188 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:43:13,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:43:13 BasicIcfg [2022-12-13 16:43:13,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:43:13,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:43:13,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:43:13,202 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:43:13,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:42:46" (3/4) ... [2022-12-13 16:43:13,208 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:43:13,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 16:43:13,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 16:43:13,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 16:43:13,222 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 16:43:13,222 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:43:13,223 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 16:43:13,223 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:43:13,252 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:43:13,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:43:13,253 INFO L158 Benchmark]: Toolchain (without parser) took 26934.45ms. Allocated memory was 132.1MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 97.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 682.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:13,253 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:43:13,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.01ms. Allocated memory is still 132.1MB. Free memory was 96.8MB in the beginning and 84.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 16:43:13,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.08ms. Allocated memory is still 132.1MB. Free memory was 84.8MB in the beginning and 82.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:13,253 INFO L158 Benchmark]: Boogie Preprocessor took 26.76ms. Allocated memory is still 132.1MB. Free memory was 82.7MB in the beginning and 81.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:13,253 INFO L158 Benchmark]: RCFGBuilder took 412.43ms. Allocated memory is still 132.1MB. Free memory was 81.1MB in the beginning and 103.3MB in the end (delta: -22.2MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2022-12-13 16:43:13,254 INFO L158 Benchmark]: TraceAbstraction took 26199.14ms. Allocated memory was 132.1MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 102.6MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-12-13 16:43:13,254 INFO L158 Benchmark]: Witness Printer took 51.47ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:43:13,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.01ms. Allocated memory is still 132.1MB. Free memory was 96.8MB in the beginning and 84.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.08ms. Allocated memory is still 132.1MB. Free memory was 84.8MB in the beginning and 82.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.76ms. Allocated memory is still 132.1MB. Free memory was 82.7MB in the beginning and 81.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 412.43ms. Allocated memory is still 132.1MB. Free memory was 81.1MB in the beginning and 103.3MB in the end (delta: -22.2MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * TraceAbstraction took 26199.14ms. Allocated memory was 132.1MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 102.6MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 51.47ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 144 PlacesBefore, 36 PlacesAfterwards, 145 TransitionsBefore, 30 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 79 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 2491 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2299, independent: 2278, independent conditional: 0, independent unconditional: 2278, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1201, independent: 1194, independent conditional: 0, independent unconditional: 1194, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2299, independent: 1084, independent conditional: 0, independent unconditional: 1084, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 1201, unknown conditional: 0, unknown unconditional: 1201] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 200 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.1s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1357 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1185 mSDsluCounter, 211 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2187 IncrementalHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 30 mSDtfsCounter, 2187 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=10, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 175 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 453 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1438 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 50/89 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:43:13,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d28e1d1c-a46d-4fcd-ad77-cb0e8e01b1fb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE