./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.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_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/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_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/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_c8e28146-e92b-4b6f-8ae7-29208b76d96d/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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- 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 12:07:02,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:07:02,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:07:02,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:07:02,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:07:02,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:07:02,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:07:02,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:07:02,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:07:02,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:07:02,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:07:02,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:07:02,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:07:02,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:07:02,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:07:02,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:07:02,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:07:02,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:07:02,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:07:02,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:07:02,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:07:02,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:07:02,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:07:02,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:07:02,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:07:02,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:07:02,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:07:02,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:07:02,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:07:02,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:07:02,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:07:02,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:07:02,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:07:02,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:07:02,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:07:02,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:07:02,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:07:02,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:07:02,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:07:02,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:07:02,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:07:02,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 12:07:02,993 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:07:02,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:07:02,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:07:02,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:07:02,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:07:02,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:07:02,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:07:02,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:07:02,995 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:07:02,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:07:02,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:07:02,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:07:02,997 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 12:07:02,997 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:07:02,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:07:02,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:07:02,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:07:02,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:07:02,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:07:02,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:07:02,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:07:02,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:07:02,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:07:02,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:07:02,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:07:02,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:07:02,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:07:02,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:07:02,999 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:07:02,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:07:02,999 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:07:02,999 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_c8e28146-e92b-4b6f-8ae7-29208b76d96d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2022-12-13 12:07:03,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:07:03,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:07:03,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:07:03,222 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:07:03,222 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:07:03,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-12-13 12:07:05,732 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:07:05,875 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:07:05,875 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2022-12-13 12:07:05,880 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/data/a3dae1c84/763b4bb3ce3b473d80a12e660e456a7e/FLAGe4ebc1e21 [2022-12-13 12:07:06,310 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/data/a3dae1c84/763b4bb3ce3b473d80a12e660e456a7e [2022-12-13 12:07:06,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:07:06,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:07:06,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:07:06,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:07:06,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:07:06,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ec6dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06, skipping insertion in model container [2022-12-13 12:07:06,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:07:06,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:07:06,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,468 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_c8e28146-e92b-4b6f-8ae7-29208b76d96d/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-12-13 12:07:06,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:07:06,481 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:07:06,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:07:06,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:07:06,506 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_c8e28146-e92b-4b6f-8ae7-29208b76d96d/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2022-12-13 12:07:06,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:07:06,519 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:07:06,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06 WrapperNode [2022-12-13 12:07:06,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:07:06,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:07:06,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:07:06,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:07:06,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,556 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 361 [2022-12-13 12:07:06,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:07:06,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:07:06,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:07:06,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:07:06,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:07:06,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:07:06,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:07:06,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:07:06,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (1/1) ... [2022-12-13 12:07:06,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:07:06,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:07:06,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:07:06,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:07:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:07:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:07:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:07:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:07:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:07:06,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:07:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:07:06,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:07:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:07:06,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:07:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 12:07:06,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 12:07:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:07:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:07:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:07:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 12:07:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:07:06,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:07:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:07:06,647 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 12:07:06,737 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:07:06,739 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:07:07,137 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:07:07,474 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:07:07,475 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 12:07:07,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:07:07 BoogieIcfgContainer [2022-12-13 12:07:07,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:07:07,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:07:07,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:07:07,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:07:07,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:07:06" (1/3) ... [2022-12-13 12:07:07,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1c1e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:07:07, skipping insertion in model container [2022-12-13 12:07:07,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:07:06" (2/3) ... [2022-12-13 12:07:07,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1c1e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:07:07, skipping insertion in model container [2022-12-13 12:07:07,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:07:07" (3/3) ... [2022-12-13 12:07:07,486 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2022-12-13 12:07:07,495 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:07:07,505 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:07:07,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-13 12:07:07,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:07:07,668 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 12:07:07,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 278 transitions, 588 flow [2022-12-13 12:07:07,794 INFO L130 PetriNetUnfolder]: 19/274 cut-off events. [2022-12-13 12:07:07,794 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 12:07:07,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 274 events. 19/274 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 286 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 228. Up to 2 conditions per place. [2022-12-13 12:07:07,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 278 transitions, 588 flow [2022-12-13 12:07:07,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 251 transitions, 523 flow [2022-12-13 12:07:07,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:07:07,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 251 transitions, 523 flow [2022-12-13 12:07:07,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 251 transitions, 523 flow [2022-12-13 12:07:07,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 251 transitions, 523 flow [2022-12-13 12:07:07,870 INFO L130 PetriNetUnfolder]: 18/251 cut-off events. [2022-12-13 12:07:07,870 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:07:07,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 251 events. 18/251 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 276 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 228. Up to 2 conditions per place. [2022-12-13 12:07:07,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2022-12-13 12:07:22,200 INFO L134 LiptonReduction]: Checked pairs total: 7015 [2022-12-13 12:07:22,200 INFO L136 LiptonReduction]: Total number of compositions: 259 [2022-12-13 12:07:22,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:07:22,214 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;@14b33a9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:07:22,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-12-13 12:07:22,216 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:07:22,216 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:07:22,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:07:22,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:07:22,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:07:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 47407, now seen corresponding path program 1 times [2022-12-13 12:07:22,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:22,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69267392] [2022-12-13 12:07:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:22,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:22,435 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 12:07:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:22,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69267392] [2022-12-13 12:07:22,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69267392] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:07:22,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:07:22,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:07:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86862886] [2022-12-13 12:07:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:07:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:07:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:07:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:07:22,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 537 [2022-12-13 12:07:22,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:22,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:07:22,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 537 [2022-12-13 12:07:22,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:07:31,723 INFO L130 PetriNetUnfolder]: 73031/90281 cut-off events. [2022-12-13 12:07:31,723 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2022-12-13 12:07:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181750 conditions, 90281 events. 73031/90281 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 7807. Compared 510730 event pairs, 46498 based on Foata normal form. 0/24441 useless extension candidates. Maximal degree in co-relation 80291. Up to 44273 conditions per place. [2022-12-13 12:07:32,283 INFO L137 encePairwiseOnDemand]: 521/537 looper letters, 89 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2022-12-13 12:07:32,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2022-12-13 12:07:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:07:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:07:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-12-13 12:07:32,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4798261949099938 [2022-12-13 12:07:32,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-12-13 12:07:32,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-12-13 12:07:32,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:07:32,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-12-13 12:07:32,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:32,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:32,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:32,314 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 773 transitions. [2022-12-13 12:07:32,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2022-12-13 12:07:33,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 12:07:33,056 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 154 flow [2022-12-13 12:07:33,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2022-12-13 12:07:33,060 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2022-12-13 12:07:33,061 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 154 flow [2022-12-13 12:07:33,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:33,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:07:33,061 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:07:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:07:33,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:07:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1471485, now seen corresponding path program 1 times [2022-12-13 12:07:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:33,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567276455] [2022-12-13 12:07:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:33,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:33,173 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 12:07:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567276455] [2022-12-13 12:07:33,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567276455] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:07:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261721190] [2022-12-13 12:07:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:33,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:33,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:07:33,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:07:33,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:07:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:33,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:07:33,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:07:33,321 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 12:07:33,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:07:33,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261721190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:07:33,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:07:33,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 12:07:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682979207] [2022-12-13 12:07:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:07:33,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:07:33,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:07:33,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:07:33,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 537 [2022-12-13 12:07:33,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:33,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:07:33,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 537 [2022-12-13 12:07:33,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:07:41,578 INFO L130 PetriNetUnfolder]: 73031/90279 cut-off events. [2022-12-13 12:07:41,579 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:07:41,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180479 conditions, 90279 events. 73031/90279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7484. Compared 509067 event pairs, 46498 based on Foata normal form. 0/24445 useless extension candidates. Maximal degree in co-relation 90228. Up to 44270 conditions per place. [2022-12-13 12:07:41,982 INFO L137 encePairwiseOnDemand]: 531/537 looper letters, 87 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2022-12-13 12:07:41,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 418 flow [2022-12-13 12:07:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:07:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:07:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 973 transitions. [2022-12-13 12:07:41,984 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45297951582867785 [2022-12-13 12:07:41,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 973 transitions. [2022-12-13 12:07:41,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 973 transitions. [2022-12-13 12:07:41,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:07:41,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 973 transitions. [2022-12-13 12:07:41,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 537.0) internal successors, (2685), 5 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:41,991 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 537.0) internal successors, (2685), 5 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:41,991 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 154 flow. Second operand 4 states and 973 transitions. [2022-12-13 12:07:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 418 flow [2022-12-13 12:07:41,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:07:41,993 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 146 flow [2022-12-13 12:07:41,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-12-13 12:07:41,994 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-12-13 12:07:41,994 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 146 flow [2022-12-13 12:07:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:41,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:07:41,994 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:07:42,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:07:42,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:42,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:07:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1471484, now seen corresponding path program 1 times [2022-12-13 12:07:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:42,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897584020] [2022-12-13 12:07:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:42,263 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 12:07:42,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:42,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897584020] [2022-12-13 12:07:42,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897584020] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:07:42,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212574205] [2022-12-13 12:07:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:42,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:42,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:07:42,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:07:42,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:07:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:42,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:07:42,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:07:42,379 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 12:07:42,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:07:42,391 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 12:07:42,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212574205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:07:42,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:07:42,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 12:07:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796588284] [2022-12-13 12:07:42,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:07:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:07:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:07:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:07:42,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 537 [2022-12-13 12:07:42,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 221.14285714285714) internal successors, (1548), 7 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:07:42,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:07:42,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 537 [2022-12-13 12:07:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:08:01,330 INFO L130 PetriNetUnfolder]: 182576/225693 cut-off events. [2022-12-13 12:08:01,330 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:08:01,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451175 conditions, 225693 events. 182576/225693 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13114. Compared 1365191 event pairs, 116245 based on Foata normal form. 0/61183 useless extension candidates. Maximal degree in co-relation 360903. Up to 44271 conditions per place. [2022-12-13 12:08:02,291 INFO L137 encePairwiseOnDemand]: 531/537 looper letters, 210 selfloop transitions, 13 changer transitions 0/229 dead transitions. [2022-12-13 12:08:02,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 229 transitions, 994 flow [2022-12-13 12:08:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:08:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:08:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1549 transitions. [2022-12-13 12:08:02,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48075729360645564 [2022-12-13 12:08:02,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1549 transitions. [2022-12-13 12:08:02,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1549 transitions. [2022-12-13 12:08:02,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:08:02,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1549 transitions. [2022-12-13 12:08:02,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:02,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 537.0) internal successors, (3759), 7 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:02,304 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 537.0) internal successors, (3759), 7 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:02,304 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 146 flow. Second operand 6 states and 1549 transitions. [2022-12-13 12:08:02,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 229 transitions, 994 flow [2022-12-13 12:08:02,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:08:02,307 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 237 flow [2022-12-13 12:08:02,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2022-12-13 12:08:02,308 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2022-12-13 12:08:02,308 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 237 flow [2022-12-13 12:08:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 221.14285714285714) internal successors, (1548), 7 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:02,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:08:02,309 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 12:08:02,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:08:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:02,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:08:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:08:02,512 INFO L85 PathProgramCache]: Analyzing trace with hash 889191598, now seen corresponding path program 2 times [2022-12-13 12:08:02,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:08:02,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937075685] [2022-12-13 12:08:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:08:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:08:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:02,604 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 12:08:02,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:08:02,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937075685] [2022-12-13 12:08:02,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937075685] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:08:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188232575] [2022-12-13 12:08:02,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:08:02,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:02,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:08:02,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:08:02,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:08:02,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 12:08:02,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:08:02,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:08:02,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:08:02,729 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 12:08:02,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:08:02,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188232575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:08:02,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:08:02,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 12:08:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074530489] [2022-12-13 12:08:02,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:08:02,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:08:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:08:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:08:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:08:02,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 537 [2022-12-13 12:08:02,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:02,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:08:02,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 537 [2022-12-13 12:08:02,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:08:22,039 INFO L130 PetriNetUnfolder]: 182576/225692 cut-off events. [2022-12-13 12:08:22,039 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:08:22,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451197 conditions, 225692 events. 182576/225692 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15816. Compared 1377599 event pairs, 116245 based on Foata normal form. 1/60993 useless extension candidates. Maximal degree in co-relation 360913. Up to 221332 conditions per place. [2022-12-13 12:08:23,243 INFO L137 encePairwiseOnDemand]: 534/537 looper letters, 52 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2022-12-13 12:08:23,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 343 flow [2022-12-13 12:08:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:08:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:08:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2022-12-13 12:08:23,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44258224705152077 [2022-12-13 12:08:23,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2022-12-13 12:08:23,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2022-12-13 12:08:23,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:08:23,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2022-12-13 12:08:23,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:23,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:23,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:23,250 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 237 flow. Second operand 3 states and 713 transitions. [2022-12-13 12:08:23,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 343 flow [2022-12-13 12:08:23,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 324 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 12:08:23,253 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 220 flow [2022-12-13 12:08:23,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2022-12-13 12:08:23,254 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2022-12-13 12:08:23,254 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 220 flow [2022-12-13 12:08:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:23,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:08:23,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 12:08:23,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:08:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:23,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:08:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:08:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash 920361020, now seen corresponding path program 1 times [2022-12-13 12:08:23,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:08:23,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689774043] [2022-12-13 12:08:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:08:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:08:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:23,551 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 12:08:23,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:08:23,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689774043] [2022-12-13 12:08:23,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689774043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:08:23,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:08:23,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:08:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796446332] [2022-12-13 12:08:23,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:08:23,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:08:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:08:23,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:08:23,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:08:23,614 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 537 [2022-12-13 12:08:23,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:23,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:08:23,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 537 [2022-12-13 12:08:23,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:08:44,646 INFO L130 PetriNetUnfolder]: 196206/244158 cut-off events. [2022-12-13 12:08:44,646 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 12:08:45,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488140 conditions, 244158 events. 196206/244158 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 16825. Compared 1533831 event pairs, 125995 based on Foata normal form. 0/70202 useless extension candidates. Maximal degree in co-relation 451137. Up to 221336 conditions per place. [2022-12-13 12:08:46,155 INFO L137 encePairwiseOnDemand]: 523/537 looper letters, 122 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-12-13 12:08:46,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 652 flow [2022-12-13 12:08:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:08:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:08:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1213 transitions. [2022-12-13 12:08:46,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4517690875232775 [2022-12-13 12:08:46,159 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1213 transitions. [2022-12-13 12:08:46,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1213 transitions. [2022-12-13 12:08:46,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:08:46,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1213 transitions. [2022-12-13 12:08:46,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.6) internal successors, (1213), 5 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:46,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 537.0) internal successors, (3222), 6 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:46,167 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 537.0) internal successors, (3222), 6 states have internal predecessors, (3222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:46,167 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 220 flow. Second operand 5 states and 1213 transitions. [2022-12-13 12:08:46,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 652 flow [2022-12-13 12:08:46,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:08:46,171 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 268 flow [2022-12-13 12:08:46,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2022-12-13 12:08:46,172 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2022-12-13 12:08:46,172 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 268 flow [2022-12-13 12:08:46,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.25) internal successors, (869), 4 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:46,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:08:46,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:08:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:08:46,173 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:08:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:08:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1826307082, now seen corresponding path program 1 times [2022-12-13 12:08:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:08:46,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880515960] [2022-12-13 12:08:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:08:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:08:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:46,270 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 12:08:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:08:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880515960] [2022-12-13 12:08:46,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880515960] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:08:46,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243366061] [2022-12-13 12:08:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:08:46,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:08:46,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:08:46,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:08:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:46,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:08:46,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:08:46,403 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 12:08:46,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:08:46,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243366061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:08:46,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:08:46,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 12:08:46,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290900712] [2022-12-13 12:08:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:08:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:08:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:08:46,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:08:46,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:08:46,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 537 [2022-12-13 12:08:46,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:08:46,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:08:46,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 537 [2022-12-13 12:08:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:02,911 INFO L130 PetriNetUnfolder]: 147541/184763 cut-off events. [2022-12-13 12:09:02,911 INFO L131 PetriNetUnfolder]: For 42295/42295 co-relation queries the response was YES. [2022-12-13 12:09:03,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474097 conditions, 184763 events. 147541/184763 cut-off events. For 42295/42295 co-relation queries the response was YES. Maximal size of possible extension queue 12326. Compared 1151763 event pairs, 95350 based on Foata normal form. 0/71383 useless extension candidates. Maximal degree in co-relation 437124. Up to 181123 conditions per place. [2022-12-13 12:09:03,898 INFO L137 encePairwiseOnDemand]: 534/537 looper letters, 56 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 12:09:03,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 370 flow [2022-12-13 12:09:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:09:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:09:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 718 transitions. [2022-12-13 12:09:03,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4456859093730602 [2022-12-13 12:09:03,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 718 transitions. [2022-12-13 12:09:03,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 718 transitions. [2022-12-13 12:09:03,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:03,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 718 transitions. [2022-12-13 12:09:03,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:03,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:03,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:03,904 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 268 flow. Second operand 3 states and 718 transitions. [2022-12-13 12:09:03,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 370 flow [2022-12-13 12:09:03,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 364 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:03,934 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 252 flow [2022-12-13 12:09:03,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2022-12-13 12:09:03,935 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2022-12-13 12:09:03,935 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 252 flow [2022-12-13 12:09:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:03,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:03,936 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 12:09:03,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:09:04,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:04,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:09:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1554113342, now seen corresponding path program 1 times [2022-12-13 12:09:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:04,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572891286] [2022-12-13 12:09:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:04,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:04,246 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 12:09:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572891286] [2022-12-13 12:09:04,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572891286] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:09:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311448385] [2022-12-13 12:09:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:04,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:09:04,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:09:04,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:09:04,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:09:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:04,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 12:09:04,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:09:04,373 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 12:09:04,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:09:04,418 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 12:09:04,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311448385] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:09:04,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:09:04,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 12:09:04,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384648858] [2022-12-13 12:09:04,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:09:04,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:09:04,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:04,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:09:04,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:09:04,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 537 [2022-12-13 12:09:04,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 252 flow. Second operand has 13 states, 13 states have (on average 221.15384615384616) internal successors, (2875), 13 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:04,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:04,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 537 [2022-12-13 12:09:04,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:09:43,830 INFO L130 PetriNetUnfolder]: 324589/406475 cut-off events. [2022-12-13 12:09:43,830 INFO L131 PetriNetUnfolder]: For 93076/93076 co-relation queries the response was YES. [2022-12-13 12:09:44,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042967 conditions, 406475 events. 324589/406475 cut-off events. For 93076/93076 co-relation queries the response was YES. Maximal size of possible extension queue 13929. Compared 2621841 event pairs, 209770 based on Foata normal form. 12/158011 useless extension candidates. Maximal degree in co-relation 1042952. Up to 115173 conditions per place. [2022-12-13 12:09:45,869 INFO L137 encePairwiseOnDemand]: 532/537 looper letters, 433 selfloop transitions, 32 changer transitions 0/471 dead transitions. [2022-12-13 12:09:45,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 471 transitions, 2470 flow [2022-12-13 12:09:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:09:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:09:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3110 transitions. [2022-12-13 12:09:45,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4826194909993793 [2022-12-13 12:09:45,875 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3110 transitions. [2022-12-13 12:09:45,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3110 transitions. [2022-12-13 12:09:45,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:09:45,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3110 transitions. [2022-12-13 12:09:45,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 259.1666666666667) internal successors, (3110), 12 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:45,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 537.0) internal successors, (6981), 13 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:45,888 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 537.0) internal successors, (6981), 13 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:45,888 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 252 flow. Second operand 12 states and 3110 transitions. [2022-12-13 12:09:45,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 471 transitions, 2470 flow [2022-12-13 12:09:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 471 transitions, 2469 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:09:45,945 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 469 flow [2022-12-13 12:09:45,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=469, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2022-12-13 12:09:45,946 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 13 predicate places. [2022-12-13 12:09:45,946 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 469 flow [2022-12-13 12:09:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 221.15384615384616) internal successors, (2875), 13 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:45,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:09:45,947 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:09:45,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 12:09:46,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 12:09:46,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:09:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:09:46,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1826307084, now seen corresponding path program 1 times [2022-12-13 12:09:46,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:09:46,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462814598] [2022-12-13 12:09:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:09:46,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:09:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:09:46,223 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 12:09:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:09:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462814598] [2022-12-13 12:09:46,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462814598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:09:46,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:09:46,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:09:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290630682] [2022-12-13 12:09:46,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:09:46,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:09:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:09:46,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:09:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:09:46,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2022-12-13 12:09:46,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:09:46,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:09:46,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2022-12-13 12:09:46,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:10:34,433 INFO L130 PetriNetUnfolder]: 369645/471980 cut-off events. [2022-12-13 12:10:34,433 INFO L131 PetriNetUnfolder]: For 56367/56367 co-relation queries the response was YES. [2022-12-13 12:10:35,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166286 conditions, 471980 events. 369645/471980 cut-off events. For 56367/56367 co-relation queries the response was YES. Maximal size of possible extension queue 20685. Compared 3346712 event pairs, 106843 based on Foata normal form. 0/185276 useless extension candidates. Maximal degree in co-relation 1166264. Up to 281084 conditions per place. [2022-12-13 12:10:37,800 INFO L137 encePairwiseOnDemand]: 533/537 looper letters, 108 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2022-12-13 12:10:37,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 116 transitions, 790 flow [2022-12-13 12:10:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:10:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:10:37,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2022-12-13 12:10:37,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692737430167598 [2022-12-13 12:10:37,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2022-12-13 12:10:37,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2022-12-13 12:10:37,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:10:37,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2022-12-13 12:10:37,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:37,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:37,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:37,807 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 469 flow. Second operand 3 states and 756 transitions. [2022-12-13 12:10:37,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 116 transitions, 790 flow [2022-12-13 12:10:37,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 698 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-12-13 12:10:37,891 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 395 flow [2022-12-13 12:10:37,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2022-12-13 12:10:37,892 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2022-12-13 12:10:37,892 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 395 flow [2022-12-13 12:10:37,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:37,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:10:37,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:10:37,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:10:37,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:10:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:10:37,893 INFO L85 PathProgramCache]: Analyzing trace with hash 780950321, now seen corresponding path program 1 times [2022-12-13 12:10:37,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:10:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79335840] [2022-12-13 12:10:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:10:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:37,945 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 12:10:37,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:10:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79335840] [2022-12-13 12:10:37,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79335840] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:10:37,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809552025] [2022-12-13 12:10:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:10:37,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:10:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:10:37,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:10:37,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:10:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:10:38,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 12:10:38,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:10:38,084 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 12:10:38,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:10:38,098 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 12:10:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809552025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:10:38,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:10:38,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 12:10:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799742641] [2022-12-13 12:10:38,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:10:38,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:10:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:10:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:10:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:10:38,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2022-12-13 12:10:38,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 227.85714285714286) internal successors, (1595), 7 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:10:38,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:10:38,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2022-12-13 12:10:38,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:12:26,609 INFO L130 PetriNetUnfolder]: 778515/982358 cut-off events. [2022-12-13 12:12:26,609 INFO L131 PetriNetUnfolder]: For 117873/117873 co-relation queries the response was YES. [2022-12-13 12:12:29,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2597084 conditions, 982358 events. 778515/982358 cut-off events. For 117873/117873 co-relation queries the response was YES. Maximal size of possible extension queue 38213. Compared 7061842 event pairs, 106821 based on Foata normal form. 0/389348 useless extension candidates. Maximal degree in co-relation 2597061. Up to 247492 conditions per place. [2022-12-13 12:12:33,033 INFO L137 encePairwiseOnDemand]: 533/537 looper letters, 236 selfloop transitions, 9 changer transitions 0/251 dead transitions. [2022-12-13 12:12:33,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 251 transitions, 1391 flow [2022-12-13 12:12:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:12:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:12:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1792 transitions. [2022-12-13 12:12:33,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4767225325884544 [2022-12-13 12:12:33,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1792 transitions. [2022-12-13 12:12:33,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1792 transitions. [2022-12-13 12:12:33,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:12:33,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1792 transitions. [2022-12-13 12:12:33,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:33,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 537.0) internal successors, (4296), 8 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:33,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 537.0) internal successors, (4296), 8 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:33,044 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 395 flow. Second operand 7 states and 1792 transitions. [2022-12-13 12:12:33,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 251 transitions, 1391 flow [2022-12-13 12:12:33,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 251 transitions, 1389 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:12:33,148 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 476 flow [2022-12-13 12:12:33,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2022-12-13 12:12:33,149 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2022-12-13 12:12:33,149 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 476 flow [2022-12-13 12:12:33,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.85714285714286) internal successors, (1595), 7 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:33,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:12:33,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:12:33,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:12:33,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e28146-e92b-4b6f-8ae7-29208b76d96d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:12:33,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:12:33,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:12:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash -287952513, now seen corresponding path program 1 times [2022-12-13 12:12:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:12:33,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009794555] [2022-12-13 12:12:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:12:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:12:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:12:33,420 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 12:12:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:12:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009794555] [2022-12-13 12:12:33,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009794555] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:12:33,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:12:33,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:12:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654657252] [2022-12-13 12:12:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:12:33,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:12:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:12:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:12:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:12:33,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 537 [2022-12-13 12:12:33,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:12:33,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:12:33,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 537 [2022-12-13 12:12:33,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:14:59,777 INFO L130 PetriNetUnfolder]: 957199/1267731 cut-off events. [2022-12-13 12:14:59,777 INFO L131 PetriNetUnfolder]: For 1785176/1786056 co-relation queries the response was YES. [2022-12-13 12:15:04,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773230 conditions, 1267731 events. 957199/1267731 cut-off events. For 1785176/1786056 co-relation queries the response was YES. Maximal size of possible extension queue 57931. Compared 11016744 event pairs, 346940 based on Foata normal form. 0/617620 useless extension candidates. Maximal degree in co-relation 3773203. Up to 755371 conditions per place. [2022-12-13 12:15:09,303 INFO L137 encePairwiseOnDemand]: 533/537 looper letters, 120 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2022-12-13 12:15:09,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 919 flow [2022-12-13 12:15:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:15:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:15:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 754 transitions. [2022-12-13 12:15:09,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.468032278088144 [2022-12-13 12:15:09,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 754 transitions. [2022-12-13 12:15:09,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 754 transitions. [2022-12-13 12:15:09,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:15:09,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 754 transitions. [2022-12-13 12:15:09,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:09,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:09,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 537.0) internal successors, (2148), 4 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:09,309 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 476 flow. Second operand 3 states and 754 transitions. [2022-12-13 12:15:09,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 919 flow [2022-12-13 12:15:12,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 892 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 12:15:12,537 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 476 flow [2022-12-13 12:15:12,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=537, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2022-12-13 12:15:12,537 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2022-12-13 12:15:12,537 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 476 flow [2022-12-13 12:15:12,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:12,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:15:12,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:15:12,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:15:12,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 12:15:12,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:15:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash -287952518, now seen corresponding path program 1 times [2022-12-13 12:15:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:15:12,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228549530] [2022-12-13 12:15:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:15:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:15:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:15:12,569 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 12:15:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:15:12,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228549530] [2022-12-13 12:15:12,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228549530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:15:12,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:15:12,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:15:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097713788] [2022-12-13 12:15:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:15:12,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:15:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:15:12,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:15:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:15:12,576 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 537 [2022-12-13 12:15:12,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:15:12,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:15:12,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 537 [2022-12-13 12:15:12,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand